1y ago

I just finished building my first DIY keyboard! Cheapino

This is the first time I built a keyboard!
A cheapino!
It took a little bit of time to get everything figured out, but I was able to finish that build relatively easily.
However, I am having trouble customizing the layout... I can't load it in the qmk.fm tool and when I upload a json file it gives me something that doesn't match my keyboard.
Also, the encoder currently types 'y' when turned right, I got 2 thumb keys working as spaces and I don't have a modifier key.
As far as I can tell, everything is soldered right, the diodes are in the right direction...
Did I mess up my soldering or is the cheapino firmware buggy?
Any app that can help me flash/customize my keyboard? I'll keep googling.
Thanks!

46 comments

Hey, thats a very nice build!
Im only using Mac, so I mapped the encoder to undo/redo, which on mac is LGUI+KC_Y/Z, but unfortunately not the same on windows. On windows gui(win)+y/z just equals "y/z", so thats why you get y and z when you turn the encoder.
Like @pixelprimer@lemmy.world says, you need to edit the encoder.c file to tweak it to what you want. If you cant figure it out, let me know how you would like it and Ill send you some code.
I checked the default keymap, and there is indeed double space there, I guess nobody has ever used it...
Anyway, what you want to do is go into keyboards/cheapino/keymaps and copy "tompi" to e.g. "chracoon", and then upload the keymap.json file to the configurator. When you are finished tweaking, download to same place and flash with "make cheapino:chracoon:flash"
Let me know if anything doesnt work.
And like @Ar7h@lemmy.world says, I did indeed make a little bobo when routing the reversed RJ45, but fortunately it was pretty easy to fix in software, the matrix has to be custom anyway... There are some ghosting issues which I have not found the root cause for, but havent really hade the time to dig into it(just fixed the ones I found in software...) I suspect these are related to my choice of doubling the columns of the duplex matrix, instead of the usual row-doubling...
- Hey! Nice to see you here! Thanks again for your awesome design. Once I have some more spare time, I'm going to make a revision of my board that I based on Cheapino, that will fix the mistake with the RJ45 and some things I wanted to add, and I will open source my design (gotta come up with a name too, and maybe some silkscreen art). Once I do that and test the new prototype, I might apply the same fixes to Cheapino. Would you be interested in a pull request? Again, I don't want to promise anything, since I have very little spare time lately, but I think your board is awesome and it would be awesome if we made it a little easier for people trying to build it.
  
  Of course, that would be awesome. I am going to Make a v2, with hotswap and 5 pin support and fix some other small stuff.
  The coolest thing would be if you made the reversible RJ45 available as a footprint, then anybody can use it without making the same mistake i did ;)
- Omg, thanks! I really liked the design/cost and it made me want to try the whole ergomech keyboard idea instead of just looking at pictures.
  Your post explains so many things!
  I'll jump on it as soon as I get back from work and I'll see if I can solve my issues.
  Do you plan on updating the design? No push, just asking.
- also just fininshed the hardware build and now - for the first time - try to get qmk on it. I cloned the repo just as in build guide and also installed qmk as per qmk docs. but when I issue
  make cheapino:default:flash
  I get
  QMK Firmware 0.15.18 make: *** No rule to make target 'cheapino:default:flash'. Stop.
  Any idea? I am also on Mac...
  
  Hey. Cool! Send some pics!
  Since there is no official qmk support for cheapino, you need to use my fork: https://github.com/tompi/qmk_firmware/tree/cheapino
  I should maybe try to get my fork merged into official qmk…
  For your question about miryoku, there isnt a super easy way. If you are confident with git and c, you can try merging my cheapino fork into miryoku.
  I based my own keymap on miryoku, so if you start with «make cheapino:tompi:flash» you should be pretty close.

I love seeing pics like this! I don’t have advice for you.

Can't help with the technical issues, but the keeb looks great. Really like the color of those key caps
- Thanks! I got the cheapest XDA caps that looked fine on Amazon. I believe they are called 'Aerospace Appolo'. They are just decent; the print is not well aligned on some keys.

I think its a firmware problem. Have you tried compiling the default keymap on tompi's branch to see if that fixes the problem?
- Yeah, that's what I did with the qmk command line utility on windows...
  I am new to qmk and custom keyboards so it's been confusing so far.
  I'll try recompiling with another layout.

I also own the Cheapino and made myself a keymap which is fully working. You can have a look at it here. Hooe that helps at least some bit.
Regarding the qmk toolbox: You can take the json file from one of the keymaps in tompis qmkfirmware repository and upload it in qmk toolbox. Then you can have the correct layout and you can configure it to your liking.
- Ah! I just recompiled, used your encoder config and the Henrik keymap, it is almost perfect.
  Many thanks, the keyboard works really well now and I'll be modifying the keymap to my needs, it's already so close to what I need!
  I'll move the NUM layer key to the left so I can enter numbers without lifting my mouse hand. :D
  
  Cool! I'm happy it actually helped you :)

Okay I finally gave in and ordered the pcb from JLPCB and the parts from AliExpress to build my own Cheapino. Will post when it's ready!

I might be completely wrong, but I've built my custom based on ideas from cheapino and in my opinion, tompi made a mistake when designing the RJ45 connection. When I copied his design, I ended up with one of the rows connected to ground on the other half. To amend that, I made a custom cable. You can see how he's trying to make it work by adding some bitmasks with functions like fix_ghosting_issue, but it's not a ghosting issue per se, but a mistake in wiring. You can check that with a multimeter running on continuity check mode. I haven't been able to make my keyboard work properly before making a cable with four wires reversed, so that the connection is correct.
- Hmmm, that's good to know. I'll check that out with a multimeter.
  I was wondering what type of network cable the keeb supports while building it.
  Networking cables can either be straight or crossover. I believe 2 pairs are affected by this difference, maybe that's where the issue comes from?
  edit: just checked and I have a straight cable.

Saw this thumbnail in my feed and thought it was a goatse meme

Great to see another Cheapino! The rotary encoder needs to edited through the encoder file, I had the same issue it is set like this as default.
I can’t help with qmk.fm I am on Linux and used make:Cheapino for my flashing. But it was confusing for me to figure out as well with this being my first build and first interaction with QMK.
I can send you my .uf2 file and you can flash my layout by just dragging the file into the RPI-RP2 drive hahaha.
I emailed Tompi when I got stuck and he responded very quickly and was very helpful. I’m sure you could do the same.
I also highly recommend adding these legs to the bottom to get some tenting on the board. So comfortable! https://a.aliexpress.com/_mK3uakA
- Oh thank you!
  I might try this again on Linux and see how it goes.
  It's good to know that the encoder can be fixed, I'll take a look how to do that.
  Those are nice legs, might get some. I am also already in the process of designing a 3d-printed case that will also serve for tenting. We'll see how it goes lol.
  
  Let me know how the case goes, I would love a case for mine! Good luck with the keyboard, these are really fun to use!

I'm all about DIYing things, but I'll never understand these fancy keyboards without the basic keys needed for a keyboard to function - number keys, function keys, arrows, etc. That extra 3 square inches of desk real estate is just not important enough to get rid of those things. I can appreciate the work put into something like this, but I just don't get the limitations.
- The idea is to minimize required motions of hands and fingers, not desk real estate. Even the ordinary keyboards have layers (Alt, Ctrl, ...) and these minimalistic ones just use the idea of layers to put the most used and important keys on the home row where they are most easily accessed. And not on a key that you need to stretch your finger or even move your hand.
  I don't care about the aesthetics - my main keyboard is pretty ugly Fifi keyboard. But the ease of typing is fantastic. Occasional switch to ISO keyboard just reminds me that I am not a creature with a hundred tentacles sprouting from my chest ;) The amount of jumping and stretching is just terrible.
  But yes, few months of muscle memory relearning can be painful.
  
  I'm not convinced that anyone types that much that an extra few millimeters of finger movement amount to much of anything.
  If people want to mess around with such extreme keyboards as a hobby, then have at it! But I'm rather hard pressed to believe in this day and age - especially since almost everything has a GUI - that people are typing sooooo much that an extra row of numbers or other keys and moving your finger that tiny distance means anything. I've replied to someone else stating that I used to work for a large high end furniture company which had tons and tons of studies on ergonomics and such in office environments. No one is going to convince me these ultra minimal keyboards are for ergonomics or speed. They're for tinkering around, having something that others say "oh, that's different" and a way to pass the time. Which is fine.
- As createkarma said, it's about not having to move your hands to reach keys you like to use. I'm on a 34 key layout, and I've found using my keyboard feels much nicer without have to move my hands around.
  Any symbols that I find are important but don't fit on a dedicated key are a combo (e.x. Q+W gives esc or comma+dot gives slash). It definitely takes a bit of getting used to but now that I've become accustomed to it I really don't know if I could go back to using a board with a more traditional key layout.
  I always saw QAZ style keyboard didn't understand how you could ever use something like that but now I not only get it but I would honestly recommend people try it out because ive come to really appreciate how it all works
  
  How do you type numbers? Or use the arrow keys? Or get into the BIOS if yiu have having computer issues? Just because a key is there, doesn't mean you have to use it all the time, but I'm not using unicode to type "38294729 + 64828 / 52.73" because I'll be 83 years old by the time I finish. The aesthetic of the keyboard seems cool, but when you go to such extremes that you eliminate some of the most basics of functionality of a device, it kind of turns into a joke, in my opinion. A row of numbers at the top there wouldn't kill the aesthetic one bit and increase usability infinitely.
- I also don't understand it at the moment, but I was curious so I built the cheapest good unit I could find to try it out.
  Maybe I'll like it or maybe it'll go to eBay. We'll see.
  What got me interested initially is the regonomic aspect of split keyboards since I spend most of my time at the computer and I'd like to avoid injury.
  
  The vast majority of "ergonomic" keyboards are marketing BS. You want a comfortable typing pose? Tilt the keyboard away from you so your wrists are in a more natural slightly bent downward pose. Most keyboards are laid out the opposite way - tilted toward the person so you can see the keys easier, but that outs your wrist in an unnatural bent up pose.
  Used to work for a very high end furniture company so we have tons of ergonomic studies. There is so much to all this but people rather get something pretty than comfortable.
  Anyways, not trying to badmouth this keyboard, but if it had the very important keys that people use all the time, it might actually work.
- I felt the same way but I have been using an ergodox for a while, so I already don't have a numpad which I didn't miss. I recently modified my ergodox firmware to map only 44 keys and removed the rest, similar to this layout. It is an interesting concept and I can appreciate how little I have to move my hands now. I don't miss the number row or function row, those were easy enough to get used to, but some of the missing symbols are harder to get used to. I want to try a few more changes before I decide if I like the smaller keyboards better or just want the standard keys back
  
  This reminds me of those lowered mini trucks. You ever seen those? They are slammed to the ground. They cut up the bed where yiu normally haul stuff, and fit it with airbags to let it drop so low. Even at their higher settings to drive it, they are so low that they sometimes get hung up on a speed bump. So it can't haul stuff anymore. You can barely drive it, and almost all it's functionality is out the window all for a hobby and aesthetics. Yeah, I think these kinds of keyboards are the lowered mini trucks of the computer world.

46 comments