2 layers243.2 × 106 mm
2 layers85.7 × 50 mm
Keebk75pcb
rustymemristor/keeb75PCB exp
- Size
- 85.7 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 24
- Nets
- 52
- Pads
- 129
- Tracks, vias
- 178, 21
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 5 Feb 2022
- Updated
- 3 Mar 2023
Overview
Keebk75pcb is an open-source printed circuit board by rustymemristor, from the rustymemristor/keeb75 repository on GitHub, published under the MIT licence. It is a 2-layer board of 85.7 × 50 mm with 24 parts on 52 nets, routed with 178 tracks and 21 vias.
It is built around the ATMEGA32U4-AU. Its parts include 7 capacitors, 4 resistors, 4 diodes, 1 IC and 1 switch. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdKeeb75
PCB bring up for a 75 key, completely programmable, customisable USB-C compliant keyboard, with compatibility for cherry mx style switches.
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MX-LED | MX_Only:MXOnly-1U-Hotswap-LED | MX1, MX2, MX3, MX4 |
| 4 | SOD123 | Diode_SMD:D_SOD-123 | D1, D2, D3, D4 |
| 3 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C1, C4, C5 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R3, R4 |
| 2 | 22 | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | 22pF | Capacitor_SMD:C_0805_2012Metric | C2, C3 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C6 |
| 1 | 16MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C7 |
| 1 | 500mA | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | ATmega32U4-A | Package_QFP:TQFP-44_10x10mm_P0.8mm | U1 |
| 1 | Molex-0548190589 | random-keyboard-parts:Molex-0548190589 | USB1 |
| 1 | SW_Push | random-keyboard-parts:SKQG-1155865 | SW1 |
Questions
How big is the Keebk75pcb PCB?
It measures 85.7 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keebk75pcb use?
24 parts, built around the ATMEGA32U4-AU. 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 Keebk75pcb KiCad files?
From the rustymemristor/keeb75 repository on GitHub, at the commit this page was made from: the board is keebk75pcb.kicad_pcb and its schematic keebk75pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keebk75pcb design in my own project?
Its repository publishes it under the MIT 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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