Author Topic: isometria75 - An Open Source 75% wired/wireless keyboard  (Read 6820 times)

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Offline ebastler

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isometria75 - An Open Source 75% wired/wireless keyboard
« on: Thu, 30 April 2020, 08:54:34 »
Hello!

I will present you my current project - isometria75.
After getting into the keyboard-world (thanks SoraNoTenshi and elmo for making me discover yet another money-hungry hobby  :'() I have been looking at groupbuys and finished designs, trying to figure out what I wanna end up with as a first keeb. I did not want to sacrifice my number row, I did not want to keep a full TKL board since those wasted too much space, and I did not want a 75% that has all keys mashed into one huge block. So, the only real option was a 75% board with separators, and I fell in love with the layout of the Evolv.


So I set out to design my first custom keeb from scratch - and after multiple iterations, design changes and a lot of help (most importantly, the MechKeys and Mechanische Tastaturen Deutschland Discord servers, as well as ai03's tutorial) as well as criticism and design ideas (Thanks Propagandalf - you were essential for the keeb in order to look the way it does today) I ended up with the status quo - case design is almost finalized, PCB prototypes are ordered. So I thought, I'd take a leap and present it here to see what you guys think of it.

But let's start with a little introduction which I will simply copy from my github repo:
Quote
The name isometria75 has it's origin in the greek noun ἰσομετρία (in latin letters: isometria), meaning "equality of measure" [1]. This word ended up being included in various languages, among them english (isometric), with the same meaning. I chose it for two reasons - because this keyboard is only available in an ISO layout (sorry ANSI users - for once it is ne ANSI avail), but also, because I paid attention to only use u/4 spaces throughout my board. You will have a hard time finding any distance on it that's not a multiple of 4.75 mm.
It is a keyboard that has been designed to be a single-layout German ISO board. There is so many beautiful ANSI boards, so I decided not to make compromises in order to get it ANSI compatible.
It features an integrated plate with 6.8 typing angle (the exact angle was chosen because it results in nice steps in the bottom assembly), 82 single-color 3mm backlight LEDs (dimmable as a group) and 17 SK6812 Mini for underglow.
There's a rotary encoder in the top right corner, and it is wireless-ready by connecting a Bluetooth module over SPI and using an alternative USB-C daughterboard which implements battery management.

EDIT: Almost forgot the crazyest feature - I reserved space for some cheap Aliexpress QI receiver in the bottom assembly, allowing me to put a QI charger below the deskmat and use the keyboard wirelessly without recharging - similar to Logitechs Powerplay wireless mice. I have yet to see if/how well that will work out, though!


The top shell is only using u/4 (and some u/2) distances for delimiters and borders, and I decided to stick to u/8 steps for the bottom. Everything is machinable on a 3 axis CNC mill with a single 3 mm tool (and a 45 chamfer-milling-tool). As you can see, it was created to be rather cheap and easy to machine, while still featuring a sleek premium-look. Up to 6 ~45g weights can be added to the bottom, resulting in roughly 1 kg of weight for the entire board in a POM top + PC bottom configuration.




I think that's enough (or too much? lol) text for now - I will let renders speak for themselves. Feel free to ask questions or share improvement-ideas! And please, do not find any errors in my PCB layout now that I have ordered the prototpyes, or  I will seriously hate myself.

Github repo for the keeb (no case files yet, just PCB): https://github.com/ebastler/isometria-75
Github repo for the usb-daughterboards: https://github.com/ebastler/unified-usb-pcb

« Last Edit: Thu, 30 April 2020, 08:59:43 by ebastler »

Offline logo4poop

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #1 on: Thu, 30 April 2020, 10:05:13 »
iso worst layout:tm:
I am like a cat but with a keyboard

Offline dkudriavtsev

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #2 on: Thu, 30 April 2020, 10:33:26 »
iso ;-;

Offline jani80k

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #3 on: Thu, 30 April 2020, 11:16:13 »
iso worst layout:tm:

Iso is not a layout in the sense of rearranged ANSI. It adds additional keys which enable special chatacters from european languages. Basically each Country has their specific ISO layout. In Germany we have and which we need on first layer. Poland have their own different ones, Portugal etc.

Offline logo4poop

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #4 on: Thu, 30 April 2020, 11:55:31 »
iso worst layout:tm:

Iso is not a layout in the sense of rearranged ANSI. It adds additional keys which enable special chatacters from european languages. Basically each Country has their specific ISO layout. In Germany we have and which we need on first layer. Poland have their own different ones, Portugal etc.
Lmao I know, it was a joke. When he linked it in discord he said "Let's see how badly I will be flamed for making it ISO only :skeet:".
I am like a cat but with a keyboard

Offline maschine

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #5 on: Thu, 30 April 2020, 12:45:24 »
Looks great! Reminds me of Sat75 and Evolv of course but everything that's 75 with little bezel and a knob will categorized as those I guess - it's not a bad thing at all because I really like this look. Glad that someone chose to go ISO only:) Looking forward!

Stay safe and all the best from another Berliner.

Offline pngu

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Offline mongg

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #7 on: Fri, 01 May 2020, 10:49:49 »
Sad to see only ISO, looks awesome:(

Offline equalunique

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #8 on: Fri, 01 May 2020, 11:46:48 »
This design is really amazing and ambitious. Good luck.

I might even convert from ANSI to ISO if I can get ahold of one.

Offline ebastler

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #9 on: Fri, 01 May 2020, 11:52:03 »
Sad to see only ISO, looks awesome:(

Since I do not use ANSI I didn't really feel like creating an ANSI version (of which I could not build and test a prototype myself without spending a ****load of money on a keeb I'd never use) :/

Since both PCB and case are open source (case will be properly open sourced once it is final), I really hope someone else will find the motivation to fork it into an ANSI version! Maybe I'll create an ANSI version (which I will not test myself though) once the ISO version is confirmed working and bug-free. But until then, the ISO version is my priority.

This design is really amazing and ambitious. Good luck.

I might even convert from ANSI to ISO if I can get ahold of one.
Thanks! We'll see how it works once the boards and components arrive and my mate finished rebuilding his CNC (he felt like tearing the whole thing apart for improvements right now...). Hope it'll be fine.

Glad you like it! ISO = best layout  :p


Since a few people started using my design as a platform for keyset renders, I have a lot of (really!) pretty renders by now, I'll post a few later on. No comparison to my crappy fusion renders  :-[

Offline logo4poop

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #10 on: Fri, 01 May 2020, 14:57:55 »
iso worst layout:tm:

Show Image


Show Image

fake news, you have gotten it from alex jones!!!!
I am like a cat but with a keyboard

Offline Motte

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #11 on: Fri, 01 May 2020, 15:46:34 »
Hi there from Bornheim!
I just stumbled upon your project and I think it's great. I was thinking about designing my own perfect keyboard but now I don't have to thanks to you. With the form factor,  ISO and an encoder,  the only thing missing would be a small OLED. but thats not too important to me. I could care less about wireless funtionality but hey why not. :D

I'ts so uncanny how close your design is to my ideas, so thanks for sharing! Are you thinking about making a group buy? I would definitely be interested. On the other hand, if there is anything I could help you with, I'd be glad to do so.
« Last Edit: Fri, 01 May 2020, 15:50:26 by Motte »

Offline Altirix

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #12 on: Fri, 01 May 2020, 16:24:30 »
Hi there from Bornheim!
I just stumbled upon your project and I think it's great. I was thinking about designing my own perfect keyboard but now I don't have to thanks to you. With the form factor,  ISO and an encoder,  the only thing missing would be a small OLED. but thats not too important to me. I could care less about wireless funtionality but hey why not. :D

I'ts so uncanny how close your design is to my ideas, so thanks for sharing! Are you thinking about making a group buy? I would definitely be interested. On the other hand, if there is anything I could help you with, I'd be glad to do so.

I believe you are describing the Satisfaction 75.

Offline jimboytacos

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #13 on: Sat, 02 May 2020, 00:59:14 »
The top case and layout is beautiful. The bottom with the rbg and design feels cheap. Possibly a simple angular design (thinking like a TGR Jane) may entice more buyers?

Offline modern

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #14 on: Sat, 02 May 2020, 05:59:15 »
finally got around to making a user just to say that this is lovely and covers all the features i've wanted to see in custom boards more often.

would definitely pick this up if you ended up doing a run.

agreed that it would be nice if this bottom portion of the case was the same material as the top

Offline mutthunt

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #15 on: Sat, 02 May 2020, 06:25:51 »
Pretty hilarious that theres so much flack for ISO when I have to put up with so many good builds that don't allow ISO.
This looks bloody nice, will be keeping an eye out and prepping my wallet

Offline abrokencondom

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #16 on: Sat, 02 May 2020, 06:34:36 »
Fantastic looking keyboard.
Bold choice to go Iso only, and with such a geometric bottom + RGB underglow (I like it personally, despite how divisive a feature it can be).

If you do manage the QI receiver in the bottom assembly, to allow charging under the deskmat to use the keyboard wirelessly forever... you'll inspire some new boards by those enthusiasts of the clean cordless keyboard+mouse setup.

Anyone know of any other upcoming keyboards with Evolv's layout (with the dial) since it's now looking like my favourite design in terms of spacing?
So tempted, but I don't use ISO because I don't want my keycap options stunted (I feel sorry for ISO users in regards to that).

Offline ebastler

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #17 on: Sat, 02 May 2020, 12:13:26 »
If you have been waiting for decent renders - your wait is over! If not, I'll show you anyway  :p
Huge thanks to elmo, not only for making these awesome renders, but also for allowing me to share them with you. If you are a keycap designer and wanna render your caps on my board, too - .fbx files (for blender) of the case have been added to the github repo. Some .steps (for CAD software) too. Feel free to use them as you wish!

I just stumbled upon your project and I think it's great. I was thinking about designing my own perfect keyboard but now I don't have to thanks to you. With the form factor,  ISO and an encoder,  the only thing missing would be a small OLED. but thats not too important to me. I could care less about wireless funtionality but hey why not. :D

I'ts so uncanny how close your design is to my ideas, so thanks for sharing! Are you thinking about making a group buy? I would definitely be interested. On the other hand, if there is anything I could help you with, I'd be glad to do so.
Thanks for the compliments! If you want to have encoder + OLED + 75%, you might wanna check out the satisfaction 75 (one of the boards that inspired me!) - sadly, no ISO plate options. The PCB supports it and ISO plate dxfs are available, though.
Regarding the groupbuy - I have about 8 boards promised to friends so far - that'll cover the 3 prototypes I won't keep (provided they work), then I'll have to see. My dream would be to find a shop who will partner with me to have them in stock. If that won't work out, I'll probably make a small, second run. Big plus of a small run: case materials can be freely chosen between POM, wood and PC for the upper and POM and PC for the bottom shell - a choice that would probably not be possible in a larger scale GB or if they should get stocked somewhere. But I wanna go step by step - see if the prototypes work and get QMK onto them is about as far ahead as I am planning right now...

The top case and layout is beautiful. The bottom with the rbg and design feels cheap. Possibly a simple angular design (thinking like a TGR Jane) may entice more buyers?
This mostly started with the idea of making my dream board reality and selling the 3 leftover protos, I did not expect the design to gather so much attention... A POM bottom shell would be no issue, and a "clean" non stepped surface could be done, but with higher milling costs. I'd prefer to stick to my design though, because that's what makes it stand out most (apart from the ISO-only). Maybe I'll just sell PCBs, and everyone can download (and edit?) edit the case files and have them milled themselves. As I said above, I'm not yet planning this far ahead. Only thing I can tell for sure is that there will not be a big GB from my side.

Pretty hilarious that theres so much flack for ISO when I have to put up with so many good builds that don't allow ISO.
This looks bloody nice, will be keeping an eye out and prepping my wallet
Thanks a lot! I hope I'll be able to offer them for purchase somehow... But we'll see once it's time for that.
I thought that there's so many super pretty ANSI only boards, ANSI users can handle a single keeb that's ISO only. Kinda weird, since we got Satisfaction, 7V and evolv which have almost the same layout and a similar (top shell) design.
They are premium boards with a price to match though, while mine is highly cost-optimised and will not have their premium looks or feel.

Fantastic looking keyboard.
Bold choice to go Iso only, and with such a geometric bottom + RGB underglow (I like it personally, despite how divisive a feature it can be).

If you do manage the QI receiver in the bottom assembly, to allow charging under the deskmat to use the keyboard wirelessly forever... you'll inspire some new boards by those enthusiasts of the clean cordless keyboard+mouse setup.

Anyone know of any other upcoming keyboards with Evolv's layout (with the dial) since it's now looking like my favourite design in terms of spacing?
So tempted, but I don't use ISO because I don't want my keycap options stunted (I feel sorry for ISO users in regards to that).
Thank you, too! The bold choice was rather easy to make, because when I made it I was only planning on making 5, maximum 10 boards for which I could easily find buyers. The bottom shell sure is the most divisive feature, but also the only one that actually makes this board stand out.
The QI/battery management part is off-loaded into a separate repo (and on a separate PCB) on purpose, my idea was to allow more designers to use them once I got everything sorted out. Similar to ai03s unified daughterboard, but focused on wireless boards (while still offering a simple USB passthrough version for those who wanna keep it wired). I originally hoped to stay within the dimensions of his board, too, but had no chance to squeeze the TP4056 + DW01 and 4 JSTs into that tiny form factor. Would have been awesome as a drop-in-battery-ification-board :D

...I wrote a lot again, but felt like dropping a line or two for every comment - now it's render time, though!

Blue alu top, clear PC bottom, GMK Nord


Clear PC bottom


POM top, clear PC bottom, GMK WOB



Frosted PC top, frosted PC bottom, GMK BOW

« Last Edit: Sat, 02 May 2020, 12:27:04 by ebastler »

Offline Motte

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #18 on: Sat, 02 May 2020, 15:29:58 »
I believe you are describing the Satisfaction 75.

You're right. The Sat75 even is the first custom mech I ever saw. I watched Taekeyboards' build video and it got me very excited about custom mechs. But at that time I still was looking for a full size mech. Secondl, it's a bit over my budget (espacially because I would need to have a custom plate made). Finally, it's not open source. If I had made my own design, I would have published it, just like ebastler does. I learned so much because there are people who like to share their knowledge and I always try to give back. Even if those points wouldn't apply, how would I obtain a Sat75? The GB has ended months ago and second hand prizes probably are going to skyrocket :-/

Sorry for OT. Back to topic:

Those render pics are just the cat's pyjamas. Now I definitely want (to build) one. Asking for a GB was just to know if I needed to make plans for building it myself.
Actually, I think the bottom's design is very good. It reminds me of 16bit and pixel art overall. And I like those pixels! Broforce anyone? :)
Also, the bottom makes it quite interesting to build a sandwich case. One could block the layers against each other using thin foil and then assign one colour per layer.

I like that you're aiming for a simple milling solution. Do you think it would be feasible to mill one by hand using router?

Edit: So if you come to the decision to sell PCBs, count me in :)
« Last Edit: Sat, 02 May 2020, 15:33:38 by Motte »

Offline ebastler

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #19 on: Sat, 02 May 2020, 15:54:38 »
Those render pics are just the cat's pyjamas. Now I definitely want (to build) one.
Hehe, looks like I owe elmo a beer for those :D I don't know anything about renders, so I would not have been able to make them.
By the way, the RGB in the renders is made assigning light sources to the SK6812 models on the PCB - so it should actually looks somwhat like this IRL. I hope, at least.

Quote
Broforce
Love that game!

Quote
One could block the layers against each other using thin foil and then assign one colour per layer.

I like that you're aiming for a simple milling solution. Do you think it would be feasible to mill one by hand using router?
I have never thought of that, but it would be possible. You'd have to change it a little, though, because I am using 2.375 mm "layer" height (19/8...) to keep within the "isometria" theme. 2 mm would probably not hurt either, though, just change the typing angle a little bit (6.2 or something like that maybe? haven't done the math).

The bottom as a sandwich layer would definitely be hand-routable, especially if you go for the wired version (so you don't need the cutouts for the battery, QI reiceiver and their wires.

The top shell would probably be a pain to hand-route though, since the plate is part of the top assembly and that one is some kinda complicated geometry all around. Maybe go from a 4mm to a 2mm plate, hand-route all the larger grooves and then lasercut the switches - that should work.

Offline KEYGEM

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #20 on: Sat, 02 May 2020, 17:24:27 »
Looking forward to see more :)

Offline Woo-Jin

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #21 on: Sun, 03 May 2020, 06:49:07 »
I made an account just to post this lol.

I really love the design, like hands down the board I've wanted the most. Super amazing work! If there ever is a GB then I'd def join! Saw that u had some work planned for some friends and all. and that in the future, it would be a potential GB. How long in the future would that be u think? Or no possible ETA based on the situation?

Regardless, sweet work, I'd love to join a future GB so I'll check the thread now and then to see if there are any updates on it!


Offline online

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #22 on: Sun, 03 May 2020, 07:14:32 »
Wow, interesting. Im alway interested in wireless keyboard! Is it QMK compatible? Which Bluetooth module you use? I have my own custom qmk board but I give up on Bluetooth because of the power hungry Bluetooth module. Is the power management done through firmware or hardware?

Offline ebastler

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #23 on: Sun, 03 May 2020, 07:32:57 »
Looking forward to see more :)
Thanks, me too! :D

I made an account just to post this lol.

I really love the design, like hands down the board I've wanted the most. Super amazing work! If there ever is a GB then I'd def join! Saw that u had some work planned for some friends and all. and that in the future, it would be a potential GB. How long in the future would that be u think? Or no possible ETA based on the situation?

Regardless, sweet work, I'd love to join a future GB so I'll check the thread now and then to see if there are any updates on it!
Wow, now that's a compliment - thank you! I think it'll be another month for the first prototype, then I'll have to get the formware working, and then see how I will proceed. Can't really say if/when there will be a GB just yet, sorry! I'll keep you guys updated in the thread though.

Wow, interesting. Im alway interested in wireless keyboard! Is it QMK compatible? Which Bluetooth module you use? I have my own custom qmk board but I give up on Bluetooth because of the power hungry Bluetooth module. Is the power management done through firmware or hardware?
Well, Bluetooth is the big maybe so far. It will absolutely be based on QMK, and I have 3.3V and a full SPI port on a header which is intended to fit a BT module. My current plan would be to use an an Adafruit BT LE SPI friend, but it is kinda pricey. Also, I did not think of adding a FET to hardware-cut SK6812, resulting in ~20 mA stand-by draw (out of a 2000 mAh battery). I will try to fix that with a hand-wired FET on the prototype and if it works, add a FET on the PCB for the next rev. Also, there is a simple hardware switch in the bottom to completely cut the battery from the circuit.

However, I have not yet worked with QMK, and have no clue how to implement all the BT stuff... I'll see once I get the PCBs and start arguing with QMK.

The battery was mostly intended as a short/mid term buffer to allow for a few days of wireless use, but recharging with a QI charger below the deskmat every once in a while, not for a fully autonomous wireless keeb which can run for weeks/months without recharging.

Battery charging/undervoltage protection/overcharge protection is done in hardware, using a TP4056 with a DW01 chip and a dual-MOSFET. Similar to most of the cheap "1S LiIon charger PCBs" you can find on Ali. The whole battery management is done on the USB daughterboard.
« Last Edit: Sun, 03 May 2020, 07:35:24 by ebastler »

Offline Woo-Jin

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #24 on: Sun, 03 May 2020, 08:51:05 »

I made an account just to post this lol.

I really love the design, like hands down the board I've wanted the most. Super amazing work! If there ever is a GB then I'd def join! Saw that u had some work planned for some friends and all. and that in the future, it would be a potential GB. How long in the future would that be u think? Or no possible ETA based on the situation?

Regardless, sweet work, I'd love to join a future GB so I'll check the thread now and then to see if there are any updates on it!
Wow, now that's a compliment - thank you! I think it'll be another month for the first prototype, then I'll have to get the formware working, and then see how I will proceed. Can't really say if/when there will be a GB just yet, sorry! I'll keep you guys updated in the thread though.

Awesome! I'll just keep tuning in! Good luck!

Offline dom

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #25 on: Sun, 03 May 2020, 10:53:21 »
75 + PC = yes please, especially with Evolv's layout  :)
Unfortunately, ISO is a big NO for myself, but a great option for those who prefer it!

Good luck!
Stay strong  :thumb:

Offline blingboyduck

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #26 on: Sun, 03 May 2020, 14:14:42 »
This is honestly as close as I have ever seen to my dream keyboard!
Am absolutely following for if / when this is ever available to purchase.

I assume you are based in Germany?
It is nice to see some EU / ISO boards. They seem quite rare.

Offline ebastler

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #27 on: Fri, 08 May 2020, 19:26:50 »
Thank you guys :)

Yes, I am currently living in Germany, and I would love if the boards would be easily available some day!

While I was waiting for the PCBs (should arrive on Monday, if everything goes well) I made some semi-usable technical drawings:
https://github.com/ebastler/isometria-75/blob/master/isometria-75-case-iso/fab/drawing.pdf

If I wanted to dimension everything, it would be tens of pages, so I limited myself to a few things, that should suffice for a cost estimate at milling-companies, and for a quick post-production tolerance check. The actual production will be done with the CAD models anyway, so I suppose the pdf doesn't have to include every dimension. We'll see how that works.

Sadly, while the PCBs arrive on Monday, most components (JST and USB connectors, SK6812, random other stuff) are still somewhere between china and Germany. Might take a while until I get those things working.

Anyway, I'll keep the thread updated once anything of importance happens. Have a nice weekend!

Offline SMOKEY

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #28 on: Sat, 09 May 2020, 16:41:39 »
I heard you are not planning a series of 5 but a series of 6 basti :) Is that right?

Offline Motte

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #29 on: Tue, 12 May 2020, 14:35:29 »
The bottom as a sandwich layer would definitely be hand-routable, especially if you go for the wired version (so you don't need the cutouts for the battery, QI reiceiver and their wires.

The top shell would probably be a pain to hand-route though, since the plate is part of the top assembly and that one is some kinda complicated geometry all around. Maybe go from a 4mm to a 2mm plate, hand-route all the larger grooves and then lasercut the switches - that should work.

The sandwich idea was meant to make the case a bit cheaper, making it possible to have the layers laser cut.
I didn't see that plate and top case are one part. I probably would split them up so to have a plate that may be laser cut. Then I probably (didn't have a look at the drawings you posted yet) can shape the top case myself using my router.

Which tools did you use to create the CAD models?

Offline ebastler

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #30 on: Tue, 12 May 2020, 18:56:06 »
I designed the enclosure using Fusion360!

@SMOKEY: Sorry, JLC only let me choose between 5 and 10 ;)

Also, there's news: my PCBs finally arrived. Some impressions are below. Sadly, Sk6812 Mini and all connectors are still somewhere between China and Europe - might take a while to arrive.
I'll cut an old USB cable and solder it directly to the PCB tomorrow, so that I can test them and start working on QMK.








Offline Motte

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #31 on: Wed, 13 May 2020, 13:40:55 »
Noice! Have fun building :)

Damn, never had a go at Fusion and don't have a source to have one at it. Hoped you had used Solid Works. But thanks for sharing STEP files :)

Offline Vidhur100

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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #32 on: Wed, 13 May 2020, 21:38:34 »
I also created an account an account for this post. I have been in the hobby for around year now and I wanted to say this is the only keyboard I have saw and liked everything about. From the easy to mill design to the wireless charging pad idea this keyboard is amazing. I just was wondering if you are planning to make an ANSI version of this keyboard. I also wanted to make a suggestion of creating a USB port on the side of the keyboard to add something like this (https://www.amazon.com/Fingerprint-Windows-Scanner-Matching-Biometric/dp/B078WTZJL3). Keep up the amazing work  :thumb:

Offline isfan14

  • Posts: 1
  • Location: Yogyakarta
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Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #33 on: Sat, 13 June 2020, 10:44:31 »
are the spi connector actually needed?

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Offline Merinhow

  • Posts: 1
  • Location: Brazil
Re: isometria75 - An Open Source 75% wired/wireless keyboard
« Reply #34 on: Thu, 02 July 2020, 15:22:57 »
Hi!! i'm a begginer in mechanical keyboards, actually just created an account to reply this thread. i'm in search for a 75% keyboard and dude... this design is just perfect. Is there any way to me to get a hand in this? Some way i can order some company to build this for me?