2 layers98.5 × 45.4 mm
Idawgz32
ChrisChrisLoLo/idawgz32
A full 32 key mechanical keyboard that can be made for only $5
81 parts77GPL-3.0
2 layers230.6 × 109.5 mm
34 key unibody keyboard based on CH552t
- Size
- 230.6 × 109.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 79
- Nets
- 61
- Pads
- 366
- Tracks, vias
- 955, 124
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 5 Jan 2024
- Updated
- 23 Jan 2024
Overview
Ch55p34 is an open-source printed circuit board by doesntfazer, from the doesntfazer/Ch55p34-keyboard repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 230.6 × 109.5 mm with 79 parts on 61 nets, routed with 955 tracks and 124 vias.
It is built around the CH552T and 1N4448W. Its parts include 34 diodes, 34 switches, 4 resistors, 3 capacitors and 3 connectors. It belongs with the 8051 (CH55x, STC, AT89) boards of this library.
Main components
2README
README.mdCh55p34
keyboard based on the ch552t Chip.
Runs on FAK firmware. I named it the Ch55p34 because it's "Ch55p." It is hot-swappable.
I forgot to add mounting holes, and because of this, I had to find a way to mount the plate to the case.
You can use it without a case, or you can use the 3d printable case and plate that I designed.
Four m2x10mm screws hold the plate in place. from the side.
An unintended side effect is that it is about 7mm thinner than any other keyboard I've made with a case.
I may do this for the rest of my keyboards!
Parts
79| Qty | Value | Footprint | References |
|---|---|---|---|
| 34 | 1N4448W | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +18 |
| 34 | SW_PUSH | keyswitches:Kailh_socket_MX | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +18 |
| 3 | 100n | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2, J3 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 330R | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | CH552T | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
Questions
How big is the Ch55p34 PCB?
It measures 230.6 × 109.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ch55p34 use?
79 parts, built around the CH552T and 1N4448W. 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 Ch55p34 KiCad files?
From the doesntfazer/Ch55p34-keyboard repository on GitHub, at the commit this page was made from: the board is ch55p34/ch55p34.kicad_pcb and its schematic ch55p34/ch55p34.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ch55p34 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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