2 layers243.9 × 136.5 mm
Barobord
sadekbaroudi/barobord
I have spent a lot of time and money designing prototypes, testing, developing, etc. Any contributions would be greatly appreciated!
157 parts57
2 layers219.1 × 95.3 mm
Qfwfq
ASH-ART/Qfwfq8A sub-40% keyboard PCB in the spirit of weteor's klacker_BS
- Size
- 219.1 × 95.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 91
- Nets
- 76
- Pads
- 480
- Tracks, vias
- 718, 62
- Pours
- 1,662
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 9 Jan 2023
- Updated
- 13 Jul 2023
Overview
Qfwfq is an open-source printed circuit board by ASH-ART, from the ASH-ART/Qfwfq repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 219.1 × 95.3 mm with 91 parts on 76 nets, routed with 718 tracks and 62 vias.
It is built around the ATMEGA32U4-AU and PRTR5V0U2X. Its parts include 35 switches, 34 diodes, 9 capacitors, 6 resistors and 2 ICs. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA32U4-AU
QFP-44(10x10)-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH QFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
PRTR5V0U2X
SOT-143-55℃~+125℃ 0.3pF、0.8pF 100W 10V、15V 5V 6.5V 6A 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
README.mdQfwfq
A sub-40% keyboard PCB in the spirit of weteor's Klacker_BS, with base kit modifiers and MechVault-style split bars. It wouldn't be a sub-40% without spicy keycap compatibility.
Status
WIP; awaiting layout feedback from testers.
Layout
Link [blocked]
Renders
Specs
- Atmega 32U4-AU MCU (Why??)
- MX and Hi-Tek 725 (space invaders) switch footprints
- ESD and overcurrent protection
- Other stuff like diodes (not the cool ones)
- That symmetry and space invaders outline
- Cool palindromic name
Todo
- Confirm prototype works
- BOM and CPL files
- Firmware
- Generic silk
- Misc. cleanups
- Use git submodule for parts lib
Disclaimer
This PCB has been tested to work. The members of the PCB development team are not liable if you end up with a non-functional pcb. Order at your own risk. Support will not be provided but pull requests will be reviewed and possibly accepted.
The layout is a work in progress and may be subject to change in further revisions.
License
This project is released under the GPL v3 License. Please refer to the LICENCE file.
Credits
PeppyToad for the layout and firmware, ash for the pcb, and weteor for the inspiration.
[blocked]Parts
91| Qty | Value | Footprint | References |
|---|---|---|---|
| 32 | D | Diode_SMD:D_SOD-123 | D0, D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22 +16 |
| 18 | 1U | marbastlib-hitek:SW_HiTek_MX_1u | K1, K2, K3, K4, K7, K10, K11, K12, K13, K14, K17, K18, K19, K22, K23, K24 +2 |
| 6 | 1.5U | marbastlib-hitek:SW_HiTek_MX_1.5u | K0, K5, K26, K27, K28, K29 |
| 5 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C4, C5, C6 |
| 5 | 1.25U | marbastlib-hitek:SW_HiTek_MX_1.25u | K16, K21, K25, K30, K33 |
| 4 | 1.75U | marbastlib-hitek:SW_HiTek_MX_1.75u | K6, K15, K31, K32 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R5, R6 |
| 2 | 22 | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | 22pF | Capacitor_SMD:C_0603_1608Metric | C8, C9 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | D_Small | Diode_SMD:D_SOD-123 | D30, D33 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | 1.25U | marbastlib-hitek:SW_HiTek_MX_1.75u | K20 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 16MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 500mA | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | ATmega32U4-AU | Package_QFP:TQFP-44_10x10mm_P0.8mm | U1 |
| 1 | HRO-TYPE-C-31-M-12 | Type-C:HRO-TYPE-C-31-M-12-Assembly | USB1 |
| 1 | PRTR5V0U2X | random-keyboard-parts:SOT143B | U2 |
| 1 | SW_Push | random-keyboard-parts:SKQG-1155865 | SW1 |
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Questions
How big is the Qfwfq PCB?
It measures 219.1 × 95.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Qfwfq use?
91 parts, built around the ATMEGA32U4-AU and PRTR5V0U2X. 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 Qfwfq KiCad files?
From the ASH-ART/Qfwfq repository on GitHub, at the commit this page was made from: the board is PCB Files/qfwfq.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Qfwfq 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).