2 layers159.5 × 30 mm
Type f
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
25 parts3kApache-2.0
2 layers99.9 × 99.9 mm
Cheapis
dotleon/cheapis86v0.1 issues: - most ubs cables cannot be plugged in when the pro micro is soldered in an usual way (upright, with the usually included pins), because of the top middle buttons.
- Size
- 99.9 × 99.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 30
- Pads
- 477
- Tracks, vias
- 149, 5
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 15 Nov 2022
- Updated
- 10 Jan 2023
Overview
Cheapis is an open-source printed circuit board by dotleon, from the dotleon/cheapis repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 99.9 × 99.9 mm with 25 parts on 30 nets, routed with 149 tracks and 5 vias.
Its parts include 17 switches, 1 IC and 1 connector. It belongs with the AVR (ATmega, ATtiny) boards of this library.
README
README.mdcheapis
v0.1 issues:
- most ubs cables cannot be plugged in when the pro micro is soldered in an usual way (upright, with the usually included pins), because of the top middle buttons. It has to be solderes upside down, flush with the keyboard pcb.
- not really an issue, but SOD-323 diodes are challenging to solder. They're also not the cheapest, although the difference is minuscule.
Cheapis was inspired by ferris and sweep.
It is the cheapest alternative to the above keyboards (that still has a PCB) as it is sub 100x100mm in size so it can be ordered for a very low price and it only needs one controller (Pro Micro or alternative).
Specs:
- Split
- Unibody
- 34 key
- Compatible with MX, Kailh Choc v1 and Gateron low profile switches
- needs 1n4148 SOD-323 diodes
- 19mm standard spacing
- angled sides by 20 degree
Pros:
- less than 100x100mm
- reversible, so you can order less
- needs ony one Pro Micro or alternative
- very cheap way to experiment with 34 key layout
Cons:
- it has to be unibody
- tenting is not possible
- fragile without a plate as the Pro Micro keeps the two sides together
- not much features, it's hardly more than a hardwire
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | SW_Diode_Combined | dotleon:SW_MX_GATLP_CHOC_reversible | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW12, SW13, SW14, SW15, SW16, SW17 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2_Pad_Via | H1, H2, H3, H4 |
| 2 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1, JP2 |
| 1 | Conn_01x01 | Connector_Wire:SolderWire-0.1sqmm_1x01_D0.4mm_OD1mm | J1 |
| 1 | ProMicro | dotleon:promicro_half | U1 |
| 1 | SW_Diode_Combined | dotleon:SW_MX_GATLP_CHOC_reversible_sideofpcb | SW11 |
Questions
How big is the Cheapis PCB?
It measures 99.9 × 99.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Cheapis use?
25 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Cheapis KiCad files?
From the dotleon/cheapis repository on GitHub, at the commit this page was made from: the board is v0.1/kicad/cheapis.kicad_pcb and its schematic v0.1/kicad/cheapis.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Cheapis design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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