Putting the (plastic) pieces together

2016-12-15

Hi there, and welcome to our monthly status update! Let’s warm up, and see what’s been happening in UHK land these days.

Mold meetup

Our mold-making contractor let us know that they’re done with the molds of every plastic part, so we made a second trip to Serbia to check them out.

The best part of the meeting was snapping together the top and bottom parts of the case, and hearing the satisfying click sound, meaning that the parts fit together accurately. This is not something we’ve ever heard when trying our 3D printed prototypes.

Putting the LED display into the case was a similarly elevating experience. These parts are so precisely fabricated that they look like a single part from the outside.

The newly created top case parts

The assembled case without the switches and PCB

Having all of the plastic parts injection molded is a major milestone, but it’s not the end of the story. Aesthetics will improve by tweaking technological parameters of the molding process. This is fully expected in the world of manufacturing, and our contractor is working on them.

Inserts

Having the injection molded parts and the final inserts in his hands, András put the inserts into the case and tested them.

As it turns out, even 16 kg can't pull a single insert out. We're about to order 16K of these little guys.

Guides

What does one do with 80 kg of stainless steel rods? Turn them into 16,000 guides to hold the keyboard halves together!

As you can see, we have already ordered the raw material, and we’ve also found a local manufacturer who will get the job done.

Palm rests

In our previous update, we published a picture of the wooden inlays on the palm rest but weren’t sure about the final color. Now, we’re experimenting with a couple of options.

Let me introduce you my mother, Klára Monda, who just happens to be a furniture painter folk artist. That’s right folks, the UHK is becoming a family business! Having more than 40 years of experience behind her, she’s more than qualified to dye and lacquer the wooden parts of the palm rests.

So far, a dark brown “walnut” dye seems to be the best match for the UHK case, but we will also give a graphite color a try soon. We’ll keep you posted.

New PCB

10 of our 7th generation PCBs are being fabricated at Eurocircuits and will arrive at any moment.

These PCBs should fully resolve acoustic and electrical noise issues and contain lots of small improvements. They’re heavily optimized for manufacturing, boast 100% test point coverage, and also include little touches like the UHK and OSHW logos. As soon as they arrive, I will assemble a couple and meet Robi to test them thoroughly.

5 of the prototype PCBs will directly go to our PCBA contractor. They’re eager to do a first small prototype run so that they can create the tooling for efficient mass production.

Agent

Józsi and Nejc have been working very hard on Agent. As the fruits of their labor, Agent has become far more polished than ever before.

You’re welcome to check out Agent in your browser to see for yourself. Click on any key to see the key action popover appear. Then associate an action of your desire, and see the new action displayed on the key. Then rename a keymap, or its abbreviation, set it to default, duplicate it, or delete it. All these things should work smoothly now.

We still have a lot to do, but Agent already resembles the final application pretty well, and we’re making rapid progress.

All hail the Input Club

Jacob Alexander of the Input Club has been doing some mad science lately. He has created the The Comparative Guide to Mechanical Switches by doing one-of-a-kind mad science. Lucky for us, Kailh switches were rated among the top contenders, so it looks like we’ve made a great choice. We’re extremely impressed by Jacob’s work.

While speaking of the Input Club, let’s give credit where it belongs. When porting the UHK to ARM and searching for the best microcontroller and LED driver we could use, we checked out their open source keyboard designs, and picked the same ARM processor and LED driver that they used.

Later on, we upgraded to a more powerful processor of the same family, and created our own schematic, PCB, firmware, and configuration application, but still, they have definitely affected our design in positive ways, so mad props to them!

More frequent updates on social media

Lately, some of you asked for more frequent updates and we’re glad to comply! Since our last newsletter update, we published 3 updates on social media. The plan is to post updates on a weekly basis on social media. You’re welcome to subscribe to our Facebook, Twitter, and Google Plus channels to for even more UHK goodness.

And that was it, folks! We’ve arrived at the end of our December update.

Let me take the opportunity to wish every one of you Merry Christmas and a Happy New Year on behalf of the whole UHK team! We’re so happy that you guys are on board!

Talk to you on 2017-01-19.

Defeating electrical noise and preparing for EMC tests

2016-11-18

Welcome to our monthly progress update! There is no shortage of news from this last month, so let’s go through them one by one!

Plastic case

We’ve already received samples of the bottom case parts, the buttons on the plastic case, and the top left and top right parts are well on their way. The following image is the top left part of the case with the sprue left on it.

As it turns out, the ejector pins of the top left mold are unable to eject the part properly, so our contractor is in the process of adding an extra pin. We shall soon receive all the plastic parts of the case to evaluate them.

Palm rest

In the last update, we showed you the 3D printed prototypes of the palm rest. We also showed you foams of different types that could go into the palm rest. In the meantime, we’ve been thinking about using an alternative material to foam: wood.

Wood palm rests are considered to be the most premium solution. They’re nice to touch, pleasing to the eye, and last longer than foam palm rests. This is how our current palm rest prototype looks like.

You can see the base plates of the palm rest on top. They’re milled out of solid aluminium, then anodized, and finally covered with lacquer. The left one was powder coated with glossy lacquer that did not change the black anodized color, and the right was covered with matte lacquer that changed the black anodized color quite a bit.

The current base plates feel extremely robust and look pretty nice, but to make them even nicer, we’re thinking about powder coating them black instead of anodizing them. This would result in a solid, semi-gloss, black color. We’ll give it a try later.

As for the wood parts, beech wood was used which got slightly dyed, and then a glossy lacquer layer was applied. The gloss is too much, so we plan to settle with semi-gloss lacquer, and we’ll probably end up using a darker brown paint.

LED display

The last time we updated you, we mentioned that our LED display was having ghosting issues. This was caused by the white LEDs whose forward voltage was significantly higher than the other red and yellow LEDs.

We haven’t found a viable solution regarding the white LEDs, so we ended up using yellow LEDs for the icons. This makes the charlieplexed LED matrix use only red and yellow LEDs whose forward voltage is similar.

This simple fix has fully resolved the ghosting issue. Ghosts busted!

Bridge cable

One would think that the bridge cable is a no-brainer. After all, it’s just a simple spiral cable, so let’s just pick a random cable from any manufacturer and call it a day, right? As it turns out, that’s not exactly the case.

In the spirit of future-proofing the UHK for backlighting, I tested the bridge cable with all switch LEDs on to see whether it carries enough current to the LEDs.

It’s clear that the right half is brighter than left. When connected via the board-to-board connector, the brightness level evened out the halves. It became apparent that the voltage drop of the bridge cable was very high.

I figured out that there are two factors that affect this issue, which are the diameter and the material of the wires inside of the cable. My bridge cable was made of copper-clad steel instead of pure copper, which conducts electricity much better. As for the diameter, the wires of my cable were extremely thin.

I then started contacting spiral cable manufacturers to learn more details and find the best option. As it turns out, 24-30 AWG diameter wires can be crimped to RJ jacks, so I asked for 24, 26, 38, and 30 AWG copper cable samples.

After testing them, I could confirm that the resistance of these cables was much lower than my original cables, and lighting was even across the keyboard halves with any of them. In order to minimize the voltage drop, I wanted to pick the thickest 24 AWG cable.

That’s when the manufacturer warned me that 24 AWG cables may not retain their shape after stretching them moderately, which was an issue I was able to confirm. I figured that it’s the plastic exterior of these cables that provide the flexibility. There was too much copper in thicker cables, which made them not retain their shape after flexing. After testing the samples, I figured that 28 AWG and 30 AWG retained their shape well. So I picked the thicker 28 AWG one, and this will be our final cable.

Lesson of the story: not all cables are created equal, and the devil is in the details!

Electrical issues

The UHK will have to pass EMC tests so that we can stick FCC and CE logos on the back, allowing for worldwide distribution. Being aware of this issue, I knew the time had come to send one of our prototypes to an electrical engineer to be investigated from an EMC standpoint.

Luckily, a friend of mine, Robi, just happens to be an electrical engineer. He’s not even a mediocre engineer, but a great one, and he was very willing to take a peek at our prototype.

After receiving the prototype, Robi was eager to get his hands dirty. The first thing he did is hook his prototype up to a scope. The results were somewhat worrying.

He told me that given this heavy electrical noise, there is not a fighting chance we’ll pass EMC tests.

About 5 minutes later he told me that he had bad news and good news. The good news is that he managed to solve the electrical noise issue.

The bad news is that I wouldn’t like the solution.

The elephant in the room is the monstrous electrolytic capacitor soldered onto the PCB. If you’re afraid that it won’t fit inside of the UHK case, you guessed it right!

Luckily, using multiple SMD ceramic capacitors can provide sufficiently high capacitance. Robi also suggested using a ferrite bead and some extra capacitors near to the USB connector to further reduce electrical noise issues.

Acoustic noise

In the previous update, I mentioned that our PCBs were emitting some audible noise which was proportional with the number of LEDs enabled. Robi also looked into this issue and the solution has several steps to it.

First, throwing more capacitors onto the PCB drastically reduces electrical noise, which in turn also reduces the piezoelectric effect responsible for the audible noise.

Second, the ceramic capacitors will be placed in a way that they won’t enforce each other’s vibrating effect.

Third, we’ll use higher value resistors for the R_EXT pins of the LED drivers because the current consumed by our latest prototype with all LEDs enabled is higher than the maximum current the USB connection can provide. Lower current draw will translate to lower noise, and given the logarithmic sensitivity of the human eye, the brightness difference will hardly be noticeable. LED lifespan will also benefit from this change.

We’re fairly confident that the above fixes will resolve every electronic issue. Our next PCB should be ready to pass EMC tests!

Bootloader

Santiago has been extremely busy with his work at NXP (now Qualcomm). So much so that he’s had hardly any time for us, but luckily, he managed to spend a whole weekend on the bootloader recently. Because of his efforts, the master bootloader is working! This means that it’s now possible to update the firmware on the right keyboard half via USB.

But that’s only half of the story. The other half involves implementing the proxy which will route the firmware of left keyboard half and modules via the right keyboard half. If everything goes well, Santiago be able to allocate enough time to get this done soon.

Our new contributor

I briefly mentioned my friend, Róbert Csordás, above. He has been a huge help in solving the electrical issues of our design, so this is the part where we express our appreciation.

He hasn’t only helped with electrical issues, but also improved the firmware in a lot of ways. He implemented a QWERTY layout, then made the communication between the keyboard halves more robust.

Robi is already a full-time UHK user. His only wish is to receive a plastic case for his prototype, so that the bare solder joints of the PCB won’t scratch his desk. We’ll make sure to send him a final UHK with all the bells and whistles as soon as we can.

Thank you so much, Robi!

Project progress and schedule

Right now, the steel guides, the feet mold, the rubber mold, and the magnet counterparts are being manufactured.

The molds of the case and the steel plate cutting tool are being adjusted to meet our manufacturing constraints. This is planned, but it will take a little longer than expected.

The PCB is being redesigned as described above in order to minimize electronic and acoustic noise. It will be ready by the end of the upcoming week, and then we’ll put it through EMC tests in December. We should have the necessary certificates by that time. We’ll launch a prototype run for the PCBs in January and start our first full production batch in February.

By the time the boards get manufactured, we’ll have all the parts and packaging in our warehouse, ready to be assembled and shipped.

We can assure you that everything happens according to the grand plan, but many things take longer than expected. We know how much you would love to have a UHK by the holidays, and we’re doing everything we can to deliver as soon as possible, but we can’t reasonably expect to ship sooner than February.

We’ll keep these updates coming with clockwork accuracy, so you’ll be aware of our progress at all time. Should you have any questions, we’re always here for you.

Thank you for your continued support, and we’ll talk to you again on 2016-12-15.

Monthly progress

2016-10-13

You know the drill: a new month always brings a new status update. Let’s delve into what’s happened lately!

Tooling status

Our mold making contractor has been working on the top molds of the UHK case and are on schedule. Here are the molds of the top case parts:

At this pace, the end is near. We should be able to test the final plastic parts within weeks!

LED display

In our previous update, we showed you the mold for the LED display. Since then, our supplier baked a complete unit featuring the PCB, the LEDs, and the epoxy inside. The result is a blindingly bright LED display!

The display is so bright that it’s rather overkill at night. Luckily, the LED driver ICs that we use allow us to precisely set the brightness level - which we will expose as a user option eventually.

And this is how it looks when scrolling the alphabet on it:

Actually, it looks better in real life, but not when recorded with a mobile phone under suboptimal lighting conditions.

Some problems still have to be resolved, though. The forward voltage of the white LEDs are considerably higher than of the red/yellow LEDs which results in an unbalanced charlieplexed LED matrix that has a tendency of ghosting which is noticeable, especially when only the white LEDs are on:

There are several ways of fixing this issue, so if everything goes well we’ll simply throw a couple of diodes at the LED matrix and make our supplier redesign the PCB of the display. We really try to keep the white LEDs, but in the worst case scenario, we’ll use LEDs of a different color instead, whose forward voltage matches that of the red/yellow LEDs.

Another issue to be resolved is acoustic noise. The LED driver ICs generate a high frequency noise that is slightly disturbing. This is due to the capacitors and inductors, which shrink and expand according to the PWM signal that drives the LEDs. There are about a half dozen ways to deal with this issue. Some of them increase costs, others increase complexity. We may end up combining multiple approaches to get the best result.

Firmware

Lots of things have been happening in firmware land lately. The FRDM dev boards that feature the processors we use have already been working for a while, but the firmware wasn’t tailored to our PCBs.

First up, I tried to set up the multipurpose clock generator of the K22 MCU which made me realize how much of a hideous beast it is. It would have likely taken me weeks to make it work, so instead, I summoned Santiago who set it up like it was a walk in a park.

Then I went on to implement the key matrix scanner, made the left keyboard half send key states to the right keyboard half, implemented a rudimentary USB communication protocol, exposed the EEPROM and LEDs via USB, and made all the peripherals work.

Not being a battle-hardened firmware developer, it’s always the low-level MCU programming that gives me the biggest headache. Now that these parts are in place, we can finally focus on implementing the high level architecture, protocols, features, and cleaning up the codebase.

The only major low level feature left is the bootloader, on which Santiago is working, and he should finish in November. In the meantime, we can simply use hardware USB programmers to program the firmware via the ARM SWD ports of the UHK.

Currently, the firmware is able to exercise the full breadth of hardware features, proving that our current generation PCBs work as expected. Next up, I’ll send a couple of assembled PCBs to our developers and contributors, so that they can make Agent communicate with the UHK via USB, and develop the firmware further.

Agent

Jozsi and Nejc have been working hard on Agent.

Nejc implemented a data layer that persists the state of Agent into local storage. That’s right folks, from this point on, all of your keymaps and macros will be automatically saved. Mad props to Nejc for his hard work!

Jozsi implemented the rendering of mouse actions, updated to the latest (and now stable) Angular and TypeScript, and removed loads of legacy code.

I’ve written a couple of scripts in the usb branch of the Agent repo to demonstrate USB communication by reading and writing the EEPROM and LED driver ICs of the UHK. My half-baked code will eventually be refactored and integrated into Agent.

Graz meetup

Usually, Santiago is located in Madrid, but nowadays he lives in Graz, helping a major customer of NXP. Living near us, he recommended that we should meet, and we have gladly taken the opportunity. I also asked Nejc whether he wants to join - to which he said yes. And so, the four of us could finally meet in person.

There was no shortage of interesting conversation and fun times. Apart from a fair amount of geek talk, we ended up showing our apparent lack of pool skills.

And that wraps up this update! Looking forward to talking to you again on 2016-11-18.

Monthly progress and choosing a switch brand

2016-09-15

Welcome to this installment of our monthly progress update! This series is composed of two parts: 1) the major happenings of the month, and 2) choosing a switch brand. Let’s get started!

Monthly progress

A lot has happened since our last update. Let’s see the nitty-gritty!

The first plastic case and metal plate samples

Our Serbian contractor has manufactured the first samples of the bottom parts of the case, the case buttons, and the metal plates.

This is the case freshly injection molded:

And then it’s ejected from the mold:

It’s easy to see the protruding pole-like plastic part where the case has been shot. This gets manually removed after molding.

Some more samples with the protruding part removed:

Don’t worry about the aesthetics. These are just test shots.

The first sample of the case buttons:

The first sample of the metal plates:

Let’s put the plate into the case:

The plastic parts look pretty good for the first try, but they have some minor inaccuracies that will need to be corrected. This is nothing unexpected, and corrections like this are usual in the world of manufacturing.

Palm rest

András and I visited a nearby company who cuts foam of various types. We asked for a couple of samples:

Pretty quickly, the 3D printed base plates also arrived (which will be ultimately crafted of aluminium):

And then the time has come to cover the foams with drape and put everything together:

This is how the palm rest looks like when fixed to the UHK:

We’re not ready yet. The type of the foam, the technology, and the drape to be used are not final. This continues to be an active area of development, and in our true style we’ll be keeping you in the loop.

LED display

Our LED display manufacturer has finished the mold of the display and created a couple of samples. This is the front side:

UHK LED display plastic part - front side

And the back side:

UHK LED display plastic part - back side

Next step, the PCB of the display will be put into the plastic shell, then it will be filled with epoxy, and a sticker featuring the graphics will be put onto the front side. We should get a ready-made sample pretty soon.

Finding our PCBA manufacturer

We’ve already picked about a dozen of suppliers who will provide all the different parts of the UHK, but a major manufacturer had yet to be found for assembling the PCBs.

So I started to request quotes from foreign companies, but when I received them, I stopped for a moment. “Wouldn’t it be great if we could find a nearby company?” - I thought. And then I emailed all 20 of the PCBA companies of Hungary and waited for quotes.

Then the impossible happened. It turned out that one of them is located in Kalocsa, the same small city where we’ll assemble the UHK. Not only are they next to us but they’re very responsive and interested in the project. We toured their facility and concluded that they’re the kind of guys we want to work with.

We’ve exchanged many emails and made a number of phone calls since then. These conversations are supremely useful, as we can heavily optimize the design of the PCB for manufacturing. As an added bonus, it seems like they can assemble not only surface mount components, but all the through-hole parts, so we won’t have to take care of those separately. We couldn’t wish for more.

And this is how we managed to insource PCBA by finding a company who is not 8,000 but 2 km away from us.

All hail our awesome contributors

Agent has been developed at a rapid pace lately, which leads me to introduce our latest and greatest contributor - Give it up for Mr. Mikko Lakomaa!

I'm Mikko Lakomaa, a web developer from Finland. I've worked as a full stack developer for about a decade now but have shifted my emphasis towards front-end JavaScript development in the last few years. I got interested in the UHK when I was looking for a more ergonomic keyboard and it just happens that their software uses technologies I wanted to learn so I decided to help them out.

Over the last few weeks, Mikko has managed to push the Macro UI of Agent to the next level, so mad props go to him along with a UHK with all the bells and whistles. Thank you so much for your contribution, Mikko!

Jozsef and Nejc are also pushing hard and have been making solid progress. Nejc has implemented the add keymap UI of Agent and now working on the data layer which manages the internal state of Agent. Jozsef has been implementing his fair share of refactorings and reviewing a fair number of pull request as the lead developer of Agent.

And now to the second part...

Choosing a switch brand

We have just decided which switch brand will be used for the UHK. Our campaign page mentions Gateron or Greetech as possible candidates, but in order to make the best choice we ended up considering other brands, too.

It’s important for us to share our thought process with you, so we’ll go over all the brands one by one and highlight some major points.

Cherry

Cherry is hardly stranger to anyone, given that they’re the original designer and manufacturer of Cherry MX switches. Then their patents eventually expired, and other brands entered to the market and replicated their switches.

Cherry is the most trusted brand because they started the show, and they’re still in business after all these years, so it’d make logical sense to pick them over the others except for one thing: availability.

The supply chain issues of Cherry MX switches have been prevalent over the years. Cherry is known for striking exclusive deals with the top keyboard manufacturers of the world, much to the dismay of smaller manufacturers who weren’t able to source Cherry switches in a consistent-enough manner to manufacture their products.

Some manufacturers switched from Cherries to alternative brands, and were accused of cheaping out. We doubt that these guys were actually cheaping out. Some of them might have, but others simply wanted to get their products manufactured. We don’t want to be ever put into this situation.

Availability issues have been well known for long time, so back in the day I ended up phoning Cherry’s German sales office only to be informed that there’s nothing they can do about supply chain issues.

Given the above, we’ll only use clear and green Cherry switches because no other manufacturers create switches of such types, but for everything else we’ll use another brand.

Gateron

Gateron switches are well known and loved by the keyboard enthusiast community. Gateron manufactures quality switches and trusted by many, so it’d make sense to pick them. We have two issues, though.

The first issue is the lack of direct contact with Gateron. Call us old school, but we like to get involved with manufacturers to be able to discuss any potential issues. We weren’t, however, able to reach Gateron neither across the Internet, nor via phone. We even asked a friend of ours in Hong Kong to try to get in touch with them, but he wasn’t able to.

We would much rather do business directly with a manufacturer than using a buying agent. Again, it’s not because of the slight added cost, but the ability to directly communicate with them.

The second issue is that Gaterons use milky white plastic for their housing. This shouldn’t be a problem for most keyboards because the switches underneath the keycaps are hardly visible, but it’s a different story for the UHK. When the halves are split the milky white color becomes visible, and it doesn’t gel well with the rest of the keyboard which is usually black.

Because of this, we don’t consider Gateron an ideal choice for us, and would rather pick an alternative brand.

Greetech

Greetech switches resemble the look of Cherry switches the most closely. It’s very easy to miss the difference because the shape of the two seems identical. Only the text featured on the housing of the switch tells whether it’s a Cherry or a Greetech.

The Greetech switches we tested felt great. Being very similar to Cherries makes them a great choice for us, not only functionally but visually. They offer 4 MX switch types (each with or without stabilizer pins) and 2 low profile switch types.

Greetech is a great candidate, but our story doesn’t end here. We wanted to go all the way and consider every switch type.

Outemu

Photo is courtesy of Massdrop

Truth to be told, we don’t know a whole lot about these switches. We can see them being used in various, mostly Chinese keyboards, but we couldn’t even find their website, and have no way of reaching them directly, so our main concern is the same as for Gateron switches.

Kailh

Initially, Kailh wasn’t on our radar because we assumed that they only strike deals with large companies and don’t serve small startups like us.

Eventually, our keycap and keyswitch supplier recommended Kail switches. He’s a guy who is also a keyboard designer, deeply passionate about keyboards, and very concerned about quality. In his opinion, Kailh switches are better than other MX compatible switch brands.

Today, I tested about 500 Kailh switches by hand and although I’m not a perfect switch testing machine, every one of them felt great and consistent. András has made a couple of blind tests and he put Cherry and Kailh into the same group 3 times in a row and put Gateron and Greetech into another group. This doesn’t necessarily mean anything, but it might mean that the feeling of Kailh switches resemble Cherry more than other brands.

There are a couple of points to be noted about Kailh. They’re a major MX switch manufacturer with more than 2,000 employees. Their manufacturing process is highly automated which should translate to great and consistent quality across their products. Their supply chain is robust and they have plenty of stock, so they can serve their customers without significant delays. Their sales channel is responsive. Kailh also manufactures automotive parts which is encouraging, because automotive manufacturers have to comply very strict quality guidelines.

Kailh’s MX switch offering is unusually rich. They offer switches of different case colors (black and transparent), optimized for regular LEDs, RGB LEDS, and SMD LEDs, and are available with or without pins.

From the innovator’s point of view, an even more interesting fact is that Kailh is not just a copycat. They recycle a significant portion of their capital into R&D, resulting in new products like the following:

Most of these keyswitches are not MX compatible but they offer various advantages over standard MX switches, like lower form factor, improved backlighting, and such, allowing developers to create new keyboards that stand out in various areas. We consider this a good thing.

Making the decision

When googling for keyswitch comparisons, one can find tons of opinions and very few facts. Some people or communities pick a brand to glorify or berate for little or no reason. We always try to be as objective as possible, and make the best choice that will result in an exceptional keyboard.

Considering all the factors, we have decided to use Kailh switches for blue, brown, red, and black, and Cherries for clear and green.

It’s important to mention that our decisions are not primarily governed by the price. There’s little difference between the price of Cherry MX compatible switches, and if we really wanted to cheap out, the first thing we’d do is to replace the super high quality Omron SS-01D microswitches of the case buttons with a cheaper part. One SS-01D switch costs about as much as 10 MX switches but the alternatives of the SS-01D have inferior durability, so we’re not willing to use those.

2018-04-28: As it turns out, Omron microswitches are reasonably priced when purchased in bulk, but they're hard to purchase in large quantities. Our PCBA contractor suggested an alternative part, the Diptronics MS2-5PN-1D(Ag) microswitch. After examining this part, we found that it represents the same high quality as the Omron SS-01D. I wanted to clarify this before being accused of cheaping out. As a general rule of thumb, we never use alternative components unless we're sure that they're of the same high quality as the parts in our BOM.

As you can see, there are a lot of factors, such as quality, availability, and aesthetics that come into play when picking a part. We think that, given the above, Kailh is an excellent choice and we’re excited to use their keyswitches in the UHK.

Should you have any opinions, you’re always welcome to let us know.

It’s been a pleasure to talk to y’all! Let’s touch base on 2016-10-13.

Updated delivery schedule and a bonus

2016-08-18

Another month has passed, and so it’s time for our monthly status update! This one will contain a bad bit of news, a good bit of news, and lots of news bites on our progress.

Updated delivery schedule

Over the last few months, a lot of you have been giving positive feedback on our progress and appreciated the detailed updates. According to our Crowd Supply campaign page, the goods are expected to ship at the end of September.

We’re trying our best to deliver on time, busting our ass day by day, usually even on weekends, and still, it’s quite apparent that we can’t meet this deadline even if we bend over backwards. So the delivery schedule needs to be revised:

The keyboard and palm rest are expected to deliver by the end of December
The modules are expected to deliver in April 2017

Please let us explain the reasons.

Our April delay that was caused by our previous bank (which we abandoned forever) has definitely contributed to this one, as it caused a lot of overhead, and we could only pay to our mold making contractor in a delayed manner.

Another reason is design delays. We have just finished the design of the feet and the palm rest. Getting the design right has definitely taken longer than expected and now the molds of the feet are about to be made. As a rule of thumb, we rather take the time to get the design right than to rush things and end up with a mediocre product.

We have to focus on the core keyboard first and implement the modules afterwards. So the mold of the modules will be created right after the mold of the keyboard. We will pay the extra shipping fees because of the separate shipment of the modules. That’s the least we can do.

We’re running things in parallel as aggressively as we can to hit our updated schedule. For example, a mold of our special keycaps just got ready in Taiwan, the mold of the case and the cutting tool is being created in Serbia, and our contractor for the LED display has just started to work on their mold.

We’re very sorry for this delay. We understand that you can’t wait to put the UHK under your hands and waiting sucks. We’re asking for your patience and to remedy the situation a bit we’d like to offer something, which is an...

Anodized aluminium palm rest

There are plenty of ways to make a palm rest and we have considered various designs over time. One of the candidates involved a beautiful anodized base plate milled from solid aluminium.

Of course they come in pairs. This is the left one.

It was clear from the get go that it won’t be cheap and we were thinking about making it available as a premium product later. But now, it’s our golden opportunity to make up for the delay of the project schedule. So I’m here to announce that we will provide this anodized aluminium palm rest to those who purchase the palm rest pledge before keyboard shipment! The price for the aluminum palm rest will go up afterwards.

Now that we wrapped up the bad and the good news let’s move on to the rest.

Tented UHK prototyped

Since our latest update we got the feet 3D printed, screwed it onto the back of a prototype and shoot a picture of it.

Everything feels right about the feet and we’re satisfied with the overall design. The palm rest is yet to be fabricated. We’ll make sure to show it to you as soon as it gets ready.

The state of the mold

The molds of the bottom cases are complete. This is the left one.

The remaining molds are also in the works, and in our true style, we’ll be posting more pictures as they get made.

Injection molded UHK keycaps

The UHK features two keycap types that are non-standard. One is a concave-shaped, 1.75U, row 4 keycap used by the Mod and Space keys, and the other is convex-shaped, 1.5U, row 1 keycap used by the backspace key.

I’m happy to let you know that recently, our keycap supplier got the molds ready for these keycaps and sent us a couple of samples:

These custom keycaps are impeccable and totally consistent with the rest, just as expected. They put a smile on our faces because custom parts like these are major milestones for the project.

The state of the modules

Not much has been said about the modules recently, so it’s time to share some information on them. We’ve actually made a couple of videos of them in action, so that you can get an idea how the modules feel and behave.

Please note that the plastic case and electronics of the modules are not ready yet. So far, the key components have been chosen so we show you the guts of the modules directly connected to the PC.

If you are curious about the exact ICs that we use inside of the UHK, or in the modules then you’re welcome to delve into our datasheets repository.

As for the number of buttons of the right-handed modules we’re not exactly sure yet but we’re aiming for two buttons per module.

Let’s see what we have!

Trackball module

The trackball module features an ADNS-3530 optical sensor which is remarkably tiny and communicates over SPI. This demo board translates SPI to USB but we’ll use a KL03P24M48SF0 microcontroller to translate SPI to I2C which is spoken by the UHK.

Trackpoint module

The trackpoint module features a sensor of an unknown part number (our supplier signed an NDA with the manufacturer so we don’t know) but it’s remarkably similar to the now defunct SK8702 trackpoint module which features the SK7102 controller. Our supplier only provided an incomplete datasheet to us, which is not a major problem because the module speaks PS/2.

We’ll use the FlexIO capability of the KL03P24M48SF0 microcontroller to implement a protocol translator which will translate from PS/2 to the I2C protocol of the UHK.

Touchpad module

This is an Azoteq ProxSense TPS43 touchpad driven by the Azoteq IQS572 capacitive controller. The touchpad is connected via the Azoteq CT 210 configuration tool to the PC.

Being an I2C device, the controller will directly connect to the UHK. We’ll have to design a custom-sized touchpad, however, featuring the IQS572. Luckily, Azoteq provided a design guide for that.

It’s not a coincidence that I mentioned the name of Azoteq a fair number of times above. Back in the day I blogged that we’re looking for a suitable part, then they contacted to us and provided the most awesome support ever!

Key cluster module

The key cluster module features a couple of keys and buttons which are simple to scan by the microcontroller. The tiny trackball is a Blackberry trackball which uses hall effect sensor along the 4 axis. We haven’t yet hooked up the Blackberry trackball to control the mouse pointer but you can find plenty of videos on YouTube of its various applications. I recommend watching Sparkfun’s video of their trackballer breakout board which explains it in detail.

Introducing our firmware developer

A while ago, we reached out to you looking for a firmware developer. We’ve gotten quite a few excellent applications and please let me take the opportunity to thank every one of the applicants for contacting us.

Without further ado, let me introduce you our firmware developer, Santiago González Fabián from the sunny city of Madrid.

My name is Santiago González and I've been playing with electronics and computers since I can remember, but I discovered the amazing world of embedded systems in the Electronics Engineering Bachelor where I felt in love with 8051 and ASM code.
I've programmed 8 bit and 32 bit MCUs in C and Assembly mainly, and my focus the last 4 years has been the Cortex M world, working at Freescale and NXP as Field Application Engineer trying to solve all kind of issues with Embedded Systems all over Spain, from Automotive to Industrial equipments, from 8 Kb Flash devices toggling LEDs to 2 MB Cortex M7 doing Ethernet, Motor Control and RTOS scheduling at the same time.

Embedded systems are my job and my hobby (Although I also climb mountains in the weekend) so in my free time I look for new challenges in several places (Stack Exchange, HackADay, Electronic Forums...) and that's how I met László and UHK, in my weekly check of NXP Community. After having a look into the project and the open source philosophy behind it, I decided I would love to help if possible. Now the UHK PCBs have arrived to Spain, so I can begin the Bootloaders development :). I cannot wait to start coding!

The new prototype sitting on Santiago’s desk

Since first getting in touch with Santiago, I’ve exchanged almost a hundred emails with him about deep technical stuff. It’s apparent to me that he’s highly knowledgeable, a truly excellent communicator, and his enthusiasm clearly shows. We couldn’t ever wish for more than that.

The bootloaders of the UHK are a lot more complex than those of regular keyboards (not that most keyboards have a single bootloader to begin with). This is because our design is highly modular, composed of separate keyboard halves and modules, each running separate firmware images. So naturally, we want to enable you to upgrade the firmware of every module over USB with a click of a button.

The idea is that the right keyboard half will run the master bootloader that will directly upgrade the application firmware from the PC. The left keyboard half and the modules will run the slave bootloader which will connect over I2C to the master bootloader, which will in turn relay the firmware image from the host computer over USB.

KBOOT 2 already supports the above scenario, but a fair amount of customization has to be done by somebody who really knows what he’s doing.

Apart from implementing the bootloaders, Santiago will be working on parts of the firmware that require deep knowledge of the Kinetis platform, like the FlexIO based PS2 to I2C protocol translator of the trackball, and such.

Still reading? Then pat yourself on the back because you deserve it! Talk to you on 2016-09-15.

Tooling is progressing

2016-06-16

Yet another month has passed by, and so it’s time for our regular monthly update. Let’s see what’s been going on!

The tools are in the works

On the 21st of May, we made a trip to Serbia to visit our contractor who is responsible for designing and machining the cutting tools for the steel plates and the molds for the plastic case.

As soon as they welcomed us to their facility, we were having a thorough conversation about the tools to be made. At this point, the cutting tools were already being manufactured and we had discussed all the small details about the molds so that they can start to manufacture them, too.

The participants of the conversation included the owner of the factory, his son, their chief mechanical engineer, our two consultants who have a vast amount of experience regarding plastic molds, András, and myself. Admittedly, I was the most clueless of the team given that I’m not a mechanical engineer. Still, what was said made sense to me even if I didn’t catch some details.

Then we hit their workshop to see the progress on the cutting tools for the metal plates in which the MX switches sit. I’m happy to report that they did not disappoint.

The parts of the cutting tools, take 1

The parts of the cutting tools, take 2

A part of the a cutting tool is being machined on an electrical discharge machine (EDM)

Our Serbian contractors have been making great progress. At this pace, they should finish with the cutting tools soon.

After touring their workshop and discussing everything there is to discuss, we hit the nearby pub and had a great conversation with the whole team. We discovered that they’re not only master craftsmen but great people. We are very pleased that everything’s on track, and it was very nice to get to know them personally.

Since our visit, they’ve also been making crazy progress with the molds. Check out the following picture. This was a block of steel when we visited them and now it’s rapidly taking shape.

The mold of a case button

Testing the mechanical prototype

We’ve assembled the 6th generation mechanical prototype with both MX switches and Matias switches. Here’s the Matias version.

Just to avoid any misunderstanding, we won’t be able to provide a Matias version anytime soon because we can’t source Matias keycaps yet, and additional tooling will have to be made. But we plan to provide Matias switches in the future so we want to future-proof the design.

Assembling the mechanical prototype was necessary to ensure that there is no mechanical interference at all. We’re happy to report that everything fits together very nicely, even despite the inaccuracies of 3D printing. This test ensures that the molds will have no issues when they’ll be made.

Kinetis PCB redesign

The PCBs are getting redesigned as we move from AVR microcontrollers to the insanely powerful NXP Kinetis platform. But as you may imagine it all starts with the schematic and here’s how the schematic of the left keyboard half looks like right now:

Mad props go to the always awesome Mr. Jan Rychter for reviewing the schematic, catching a couple of issues, and providing valuable suggestions. According to Jan, schematics review is even more important in the hardware world than code review in the software world. I can certainly endorse his viewpoint, as you can always update software but you can’t magically rearrange the atoms of hardware once it’s made.

This is the semi-routed left PCB:

This redesign is a major overhaul which is certainly quite disruptive, but the end is near, and the end result will be worth it. The schematic is almost finalized and then there’s some routing left to be done. I expect a couple of fully functional PCBs pretty soon.

Recent progress of Agent

We had a day long get together with Árpi and Józsi recently, to work on Agent. Data-binding is finally working for some key actions. If you select the factory keymap under the Keymaps-ng2 main menu item, then click on a key, and select a Layer action, a Keymap action, or a None action, and finally click on the Remap Key button, then the relevant key gets rendered accordingly.

So far so good! The UI will be a tad smoother than the current version, and every key action will be implemented soon.

Our site has been redesigned

We weren’t quite satisfied with our website, so we redesigned it. Now the UHK is presented the way it deserves. You’re welcome to head over to UltimateHackingKeyboard.com to check it out, and let us know what you think.

Thanks and congratulations for making it to the end of the post! Talk to you on 2016-07-14.

The mold design is almost finished

2016-05-19

This is a beautiful day, as it marks our 5th post-campaign update, just as scheduled. Let's get right to it!

Our Serbian contractor is hard at work. So much so that they're almost ready with the design of the mold. We thought you'd appreciate a couple of CAD images, so here they are.

The mold for the top-left keyboard half

The mold for the bottom-left keyboard half

The mold for the case buttons

So far so good! They're pretty close to starting the actual manufacturing of the molds. We're visiting them in Serbia this weekend to discuss the last details of the molds before getting them manufactured.

Expect real life photos of hunks of steel in future updates.

Mechanically testing the 6th generation prototype

Due to the nature of mold making, it's critical to get everything from the beginning, because it's hard to go back. And what better way to test the design than to build an up-to-date prototype?

András has made some final changes to the case to make it accommodate Matias switches, not just Cherries. This 3D printed case has the same design as the mass-produced injection molded case will - apart from the vast difference in quality because 3D printing vs injection molded plastic are worlds apart in terms of quality and accuracy.

6th generation UHK case prototype, top view

6th generation UHK case prototype, close view

In the meantime, I've been busy updating our PCBs to correspondwith the new mechanical CAD files. The shape of the PCB should now be finalized, (including the positions of the mechanical components), but the electronics routing has yet to be fully redesigned. Let's see the fruits of my labor.

The panelized PCB

Once the PCBs are depanelized, and some components soldered in, it starts to resemble the UHK much closely.

The depanelized PCBs with all the mechanical components (but the switches) soldered in

I’m especially pleased with the way the pogo pin connector turned out. This connector has a crucial role in interconnecting the keyboard halves with the modules. The new solution features 2.5mm-thick PCBs perpendicularly soldered onto the main PCBs. Pogo pins are stuck through the male PCB, and flat pads are featured on its female counterpart. The new design is a lot more robust and pleasing to the eye than the previous battery spring connector.

The male and female pogo pin connectors

This mechanical PCB is useful without the electronics because it allows for mechanical testing. The schematic is being updated from AVR to the Kinetis platform, and as soon as it gets done, the PCB will be rerouted, fabricated, and tested.

We have almost finished creating a Cherry and a Matias mechanical UHK prototype, but we're waiting for the new metal plates to arrive to finish them off.

Our GitHub repos are on fire

Since our previous status update, a whopping 222 commits have landed in our GitHub repos! Now that's what I call true teamwork! This leads me to some much deserved words on our newest contributor!

Let me introduce Mr. Samuel Rang!

Hello everyone!

I'm Sam Rang, and I've been helping out with the serialization and deserialization of configuration files for Agent. I am a graduate of Duke Engineering with a degree in Computer Science and Electrical & Computer Engineering, and work for Red Hat Consulting. I am a big mech keyboard nut (much to my fiance's chagrin) and was really excited when I heard about this project and that excitement is still going strong! I'm so glad that the team has let me in and I'll keep contributing as long as they let me.

Sam got in touch with us about a month ago. He asked me what could he contribute. It was quite a challenging question because Agent is in heavy flux at this point, and isolating a discrete part that can be worked on is far from trivial. But I found something: the configuration serializer.

That's why I was working so heavily on the serializer a month before: to lay down its foundation and hand it off to Sam. And boy, did he deliver! He went berserk and ended up implementing all the 37 classes to be serialized.

Sam is still working on Agent a bit, then he'll put on his firmware hacker hat, and implement the configurator deserializer of the firmware. What a journey it will be!

In the meantime, Józsi is on a mission to put the Angular 2 application logic behind Agent, making it not only beautiful, but also functional. At this pace, you'll be able to get stuff done with Agent by the next month.

Árpi is continuing to refine the frontend of Agent until perfection is attained. He's pretty close to finishing the keymap editor, and then he'll transition to other parts of Agent. He's just pushed the latest and greatest version of Agent to GitHub Pages, so be sure to take a look at it!

And that's it, Ladies and Gents! Excited to talk to you again on 2016-06-16!

3rd UHK post-campaign update: The new firmware is in great shape!

2016-03-17

Two months ago we announced that we’ll be moving to a much more powerful ARM processor instead of the AVR - and one month ago we said that we’ll be using an even powerful one. Moving to a new processor architecture is a big deal, especially with a short amount of time - but we were able to make it happen without hurting the project schedule.

We’ve been working heavily on the new firmware lately, and we’re happy to let you know that it’s paid off big time! This is how the left side of my desk looks:

The rightmost FRDM-K22F board contains the insanely powerful MK22FN512VLH12 processor and runs the firmware of the right keyboard half. It shows up as a fully-fledged USB device, implementing a keyboard interface, a mouse interface, and a generic HID interface. This means that it can act as a keyboard, as a mouse and it’s also able to communicate with the host computer (to transfer configuration data, etc). As proof of this, a button on this board makes it send the scancode of the letter “a” to the host computer, another button scrolls with the mouse downwards, and a script that I’ve written makes the RGB LED display any color.

The middle FRDM-KL03Z board acts as the left keyboard half, and it communicates via the right half via the I2C protocol. A button on this board moves the mouse pointer leftwards, and another button moves it rightwards.

The leftmost board is an Open Bench Logic Sniffer which sniffs the communication of the aforementioned boards, so that the firmware can be debugged more easily.

Want to watch a half minute video of how it works? Pop that corn, then enjoy the view!

Working on the new firmware is a labor of love. Being an advocate and practitioner of clean code, I’ve made sure that it’s not merely working, but supremely readable. There’s a lot of code to be added, but it should be easily hackable by the UHK owner.

Progress on Agent

Arpi has been giving Agent some love. Now you can switch between keymaps in the side menu and change to the macro view interface. This is still considered to be a mockup, but more and more things are working, so you’re welcome to click around!

The UHK in the Wild

Our most beautiful master prototype is truly a word traveller. It’s been in San Francisco and New York to be seen by the media and you at getgeeked, then travelled to Moscow, only to arrive to Singapore to be featured at Hackware v1.2, then went back to Hungary, had a trip to Spain for a testing session, and recently landed in DevConf in Johannesburg!

A UHK was given away by DevConf to a speaker and an attendee, and they liked our prototype so much that they’re in the process of purchasing a 10-pack.

Our sincerest thanks go to Mark Pearl, organizer of DevConf, who got in touch with us, and helped to make this happen!

What’s Next?

The firmware has progressed so far, it’s now time to redesign the PCBs to feature the new processors instead of the old AVRs. There’s also a lot in the works on the mechanical design front, so stay tuned.

Talk to you on 2016-04-14!

2nd UHK post-campaign update: PCB design now supports LEDs and Matias switches

2016-02-18

Time flies! We promised to touch base every month - so let’s get right into what we’ve been working on!

The mechanical design is being sent to manufacturing

András has been having his fair share of CAD-filled days lately, and as a result we’re days away from sending the design of the case off to manufacturing. He’s made a million little tweaks and a couple of more significant changes.

Foot design - adjustability and portability

The fixation mechanism of the feet is definitely a major one. We brainstormed foot design ideas for a while, and finally found the best option. To keep the UHK as compact as possible, it will feature adjustable (flip open) feet that are entirely removable in addition to the small, flat rubber feet. This way if you decide not to use the adjustable feet, they won’t occupy any extra space. And if you do want them, they can be easily installed with 3 screws per foot. Once you do, you’re able to flip them open in a moment. The current design allows for positive tiling, negative tilting, and tenting - The best of every world! András has yet to finish the design of the adjustable feet so stay tuned for more news.

8 feet in total, 3 mounting holes around individual rubber feet

Mounting bosses - 3 per foot, as seen from inside the case

PCB design - LEDs and Matias switches

We’re also stoked about having added pins for LEDs and Matias switches! We use universal switch footprints that combine the pins of Cherry switches (optionally with fixation pins), Matias switches, and LEDs. We designed the stiffening ribs of the bottom case in a future proof manner by routing them around the hybrid switch footprints to avoid mechanical interference. Please note that we won’t be able provide either an LED, or a Matias UHK version for a while, but the opportunity will be there for modders. You can see the pins on the following section view.

Physical layout - finalized

Another major change is the finalization of the physical layout. Fear not, you shouldn’t even notice the subtleties if you aren’t watching very closely. Space and Mod has been split right where the G and H keys meet. This is the best option ergonomically, as it’s right between the hands of touch typists. This gave us an opportunity to use more standard keycaps so those of you who want to replace keycaps will be in a better situation. Lo and behold, our final ANSI physical layout:

And the ISO version:

Funny thing is, poor András has been working day and night to implement this seemingly small change, as it affected the geometry of the CAD model in major ways. He definitely deserves a day off... only to work even harder as we march towards manufacturing!

Speaking of the above, I’ve created a dedicated layouts and keycaps FAQ page on our site lately, and while being there also spruced up the main FAQ quite a bit to satisfy your endless curiosity.

The state of the ARM port

In our previous update we were looking for a firmware developer to port our existing firmware to NXP’s Kinetis platform and develop it further. We’ve been getting quite a few impressive applications and suggestions.

Say hi to Mr. Jan Rychter, who has been eager to help us, and offer his very valuable advice. Since first contact we’ve been exchanging emails full of geek talk. And did I mention that he’s also a most esteemed backer of the UHK?

Jan got me up to speed in no time. As it turned out, Teensyduino is not the best foundation for a serious firmware application. It’s nice for prototyping purposes but NXP’s sophisticated Kinetis SDK is a much better platform for this purpose.

Unfortunately, the MK20DX256VLH7 processor that we originally planned to use is not a good choice because KSDK won’t ever target it. As crazy as it might seem, there’s a more powerful, fully supported, and cheaper alternative on the market: the MK22FN512VLH12.

How powerful and cheap, you ask? Let’s compare!

Processor name	ATmega32U4	MK20DX256VLH7	MK22FN512VLH12
Processor core	AVR8	ARM Cortex-M4	ARM Cortex-M4
Rated speed	16	72	120	Mhz
Flash memory	32	256	512	kbytes
RAM	2.5	64	128	kbytes
Price	3.6	4.55	4.04	US Dollars

Mind blown. Twice the power for less price? I’ll take that on any day of the week!

Right now, there are a couple FRDM development boards on my table, one of which running our Kinetis firmware port which enumerates as a keyboard + mouse USB device. This is already looking great, and you can expect further major progress shortly, so the port is definitely within reach, and I’m happy taking this direction.

Agent is coming along nicely

Árpi is on a mission to make Agent the most beautiful keyboard configurator application ever crafted. He never ceases to amaze me as he massively cleans up the UI of my original mockup while keeping the original functionality intact. This is the most up-to-date screenshot of Agent:

You’re welcome to check out Agent in the browser. Please note that there’s only a minimal UX code behind the UI, but it should give you a good idea about the final interface.

Thanks for reading, and talk to you on 2016-03-17!

The tale of 5 prototypes

2015-11-10

Semi-assembled UHK prototype

You purchase the gadget of your dreams and open the box with excitement - it’s beautiful, functional, well-designed and puts a smile on your face. It’s hard to imagine that at one point, your gadget was nothing more than a big mess of wires. The final product has come a long way, and in many stages, from wires to being ready for a campaign.

Engineers shed blood and tears working out endless technical challenges all for the sake of a fully functional and reliably working prototype. This is our condensed story of trials and tribulations.

Prototype 1

The basic goals were clear - build a truly split, compact mechanical keyboard that merges as one piece. This is a good start, but still pretty vague. So it’s not surprising that our first prototype ended up like this:

UHK prototype 1

As you can see, we were flirting with the idea of building a USB hub into the UHK, which was ditched later on because of the lack of space. Small Molex connectors were used to connect the two keyboard halves, which saved space but they lacked robustness and repeatability, so they had to go.

The above PCB (printed circuit board) didn’t have any wires, so it wasn’t functional by any means. We really just wanted to get an idea how the keyboard would look. Making the electronics work started on a breadboard like this one:

The UHK on the breadboard

The development boards at the bottom are the brains of the left and right keyboard halves. The buttons above them implement a 2x2 key matrix, yielding 4 keys per keyboard half. The boards are connected by a wire, making the left board able to send key press and key release events to the right half. The massive board at the top is an Open Bench Logic Sniffer, enabling me to see the communication between the two boards for troubleshooting purposes.

Prototype 2

Finishing the electronics breadboarding, it was time to turn the wires into traces on a PCB to have a functional prototype. This time, we tried a retractable S-Video cable to connect the keyboard halves. The bulkiness of the plugs is obvious, but what you can’t tell is their lack of reliability. 3 LEDs were used per keyboard half to display status information just because it was a simple solution to implement at that time.

UHK prototype 2

Prototype 3

With the PCB started, it was finally time to come up with the final shape of the UHK and get its case 3D printed. On the following picture, the left half was printed using an EOS SLS (selective laser synthesis) machine and the right half was printed on an Objet polyjet. Unlike the left half, the right half is painted and polished. We ended up using SLS for our prototypes because even though it has lower resolution than polyjets, its shape reflects the shape of the CAD model more accurately, and its mechanical qualities are better. This time we switched to an RJ11 retractable cable, which is a lot less bulky than the previous S-Video cable - but it turned out to be similarly unreliable.

UHK prototype 3

Prototype 4

Apart from fixing a lot of errors on the PCB, we added stainless steel inserts to this prototype, letting users to mount the keyboard halves onto many objects. The other day, a disabled person emailed us who will use the inserts to mount the keyboard halves onto his armchair. We’re very glad that our keyboard supports such scenarios out of the box.

At this point, we realized that retractable cables of all kinds are supremely unreliable, and only a cord cable would do the job.

The back of the left keyboard half

The inclusion of stainless steel inserts reshaped the contour of the PCB quite a bit, as you can see below:

UHK prototype PCB

Prototype 5

Our last generation prototype featured only very minor improvements to the PCB. We also found a super talented professional who polished and painted the 3D printed case to make it resemble the final look of the injection molded plastic case.

During the course of working on the UHK, we put more than 10,000 hours into it, and failed numerous times. Every failure taught us a lesson - a way to do something better. There is an industry term called MVP, which stands for Minimum Viable Prototype. The UHK is already far beyond this point.

UHK prototype 5

The prototyping is done, but it’s not quite the end of the story. We have yet to unveil some one-of-a-kind, game changing addons. Stay tuned!

prototype

Mold meetup

Inserts

Guides

Palm rests

New PCB

Agent

All hail the Input Club

More frequent updates on social media

Plastic case

Palm rest

LED display

Bridge cable

Electrical issues

Acoustic noise

Bootloader

Our new contributor

Project progress and schedule

Tooling status

LED display

Firmware

Agent

Graz meetup

Monthly progress

The first plastic case and metal plate samples

Palm rest

LED display

Finding our PCBA manufacturer

All hail our awesome contributors

Choosing a switch brand

Cherry

Gateron

Greetech

Outemu

Kailh

Making the decision

Updated delivery schedule

Anodized aluminium palm rest

Tented UHK prototyped

The state of the mold

Injection molded UHK keycaps

The state of the modules

Trackball module

Trackpoint module

Key cluster module

Introducing our firmware developer

The tools are in the works

Testing the mechanical prototype

Kinetis PCB redesign

Recent progress of Agent

Our site has been redesigned

Mechanically testing the 6th generation prototype

Our GitHub repos are on fire

Progress on Agent

The UHK in the Wild

What’s Next?

The mechanical design is being sent to manufacturing

Foot design - adjustability and portability

PCB design - LEDs and Matias switches

Physical layout - finalized

The state of the ARM port

Agent is coming along nicely

Prototype 1

Prototype 2

Prototype 3

Prototype 4

Prototype 5

Title