2 layers347.7 × 146.6 mm
Mysterium pcb
coseyfannitutti/mysterium
TKL keyboard that can be entirely assembled using only through hole components, including usb type-c
227 parts541GPL-3.0
2 layers285.8 × 124.6 mm
Punk75
dsanchezseco/punk7544Ortholinear keyboard with 75 keys and all components through hole
- Size
- 285.8 × 124.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 194
- Nets
- 122
- Pads
- 701
- Tracks, vias
- 1,667, 63
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 10 May 2020
- Updated
- 10 Feb 2021
Overview
Punk75 is an open-source printed circuit board by dsanchezseco, from the dsanchezseco/punk75 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 285.8 × 124.6 mm with 194 parts on 122 nets, routed with 1,667 tracks and 63 vias.
It is built around the ATMEGA32A-PU and M2.5. Its parts include 77 diodes, 8 resistors, 5 capacitors, 2 switches and 1 IC. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2README
README.mdpunk75
Ortholinear keyboard with 75 keys and all components through hole
Uses an ATmega32A-PU and USB-C.
BOM list
Building
Bootloader flashing
Before being able to flash the keymap as regular in QMK using a USB we need to flash the bootloader first. It is only needed to do this process once if the MCU does not come already flashed with a bootloader.
Punk75 uses USBasp as bootloader.
To flash USBasp you'll need and USBasp dongle or a pro micro/elite-c. Other methods not tested but may work.
To follow the process to flash the bootloader go here and follow the instructions.
Keymap flashing
There are two possibilities
QMK toolbox
TODO
CLI
TODO
Cases
PCB
Acrylic
Parts
194| Qty | Value | Footprint | References |
|---|---|---|---|
| 75 | D_Small | modded_footprints:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +59 |
| 75 | MX-NoLED | MX_Alps_Hybrid:MX-1U-NoLED | MX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23 +59 |
| 14 | M2.5 | MountingHole:MountingHole_2.7mm_M2.5_ISO7380_Pad | H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, H14 |
| 4 | MX-NoLED | MX_Alps_Hybrid:MX-2U-NoLED | MX30.1, MX35.1, MX45.1, MX50.1 |
| 3 | 1k5 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R6, R7, R8 |
| 2 | 0.1uF | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C3, C4 |
| 2 | 22pF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C1, C2 |
| 2 | 3.6V | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | DS1, DS2 |
| 2 | 5k1 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2, R4 |
| 2 | 75 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R3 |
| 2 | Rotary_Encoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_CircularMountingHoles | RE1, RE2 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R5 |
| 1 | 16MHz | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | 4.7uF | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | C5 |
| 1 | 500mA | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | F1 |
| 1 | ATmega32A-PU | Package_DIP:DIP-40_W15.24mm | U1 |
| 1 | AVR-ISP-6 | random-keyboard-parts:Reset_Pretty-Mask | J1 |
| 1 | BOOT | Button_Switch_THT:SW_PUSH_6mm | SW2 |
| 1 | LED2 | LED_THT:LED_D3.0mm | LED2 |
| 1 | POWER | LED_THT:LED_D3.0mm | LED1 |
| 1 | RESET | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_GCT_USB4085 | USB1 |
Questions
How big is the Punk75 PCB?
It measures 285.8 × 124.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Punk75 use?
194 parts, built around the ATMEGA32A-PU and M2.5. 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 Punk75 KiCad files?
From the dsanchezseco/punk75 repository on GitHub, at the commit this page was made from: the board is punk75.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Punk75 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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