https://github.com/tm90/keyboard

https://github.com/tm90/keyboard

electronics kicad mechanical-keyboard

Last synced: about 2 months ago
JSON representation

• Host: GitHub
• URL: https://github.com/tm90/keyboard
• Owner: TM90
• Created: 2018-06-09T12:37:14.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2021-12-31T13:13:36.000Z (about 3 years ago)
• Last Synced: 2023-08-04T01:02:31.918Z (over 1 year ago)
• Topics: electronics, kicad, mechanical-keyboard
• Size: 1.26 MB
• Stars: 2
• Watchers: 4
• Forks: 1
• Open Issues: 5
• Metadata Files:
  • Readme: README.md

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README

        
# DIY Mechanical Keyboard

## Main Idea:

Have as much as possible open source? Also the tools used to build the keyboard

## Tool usage:

1. KiCAD (schematic, layout) (http://kicad.org/ )

2. avr-gcc (https://gcc.gnu.org/wiki/avr-gcc )

3. Export data for alu body from a layer in the KiCAD layout data

## Electronic

Own layout and schematic but based on this project to keep compatibility with tmk firmware and qmk firmware:

### Datasheets

#### Power

- LM1117 3.3V LDO http://cdn-reichelt.de/documents/datenblatt/A200/LM1117-TI.pdf

- NCP1402 step up DCDC Converter https://www.onsemi.com/pub/Collateral/NCP1402-D.PDF ->farnell: out of production

      - Alternative MAX1724 https://www.mouser.de/datasheet/2/256/MAX1722-MAX1724-97057.pdf but no Kicad Lib yet

- MCP 73831/2 Single Cell Lipo Charge Management Controller http://ww1.microchip.com/downloads/en/DeviceDoc/20001984g.pdf

#### Bluetooth

- RN42 Bluetooth Module http://ww1.microchip.com/downloads/en/DeviceDoc/50002328A.pdf

#### Microcontroller

- ATMEGA32U4 8 bit Microcontroller with USB http://ww1.microchip.com/downloads/en/devicedoc/atmel-7766-8-bit-avr-atmega16u4-32u4_datasheet.pdf

- AT90USB1286 8 bit Microcontroller with USB but more IO than ATMEGA32U4  http://ww1.microchip.com/downloads/en/DeviceDoc/doc7593.pdf

## Mechanical

Sandwich case or alu bend case

## Software/Firmware

- 

- 

## Other:

Prototype for Switches without big PCB and description how to build a small keyboard:

Fullsize Keyboard matrix example with atmega32u4:

## Manufacturer:

### PCB:

- beta layout  

- LiteOn  

- jlcpcb 

### Mechanical:

Maybe using a front panel service for the keyboard front, aluminum or acrylic would be possible at beta layout