
Controller
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards

Raspberry Pi Pico Breadbord platform.
Akashi-19 is an open-source printed circuit board by suikan4github, from the suikan4github/Akashi-19 repository on GitHub, published under the MIT licence. It is a 2-layer board of 114.3 × 96.5 mm with 11 parts on 40 nets, routed with 167 tracks and 29 vias.
Its parts include 5 connectors, 1 IC and 1 switch. It belongs with the RP2040 boards of this library.
Raspberry Pi Pico Breadboard platform.
A board with Raspberry Pi and Breadboard together.
Features :
The circuit schematics are available here.

| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | Conn_01x20_Socket | Connector_PinSocket_2.54mm:PinSocket_1x20_P2.54mm_Vertical | J1, J2 |
| 1 | GROVE I2C | Connector:NS-Tech_Grove_1x04_P2mm_Vertical | J3 |
| 1 | QWIIC | sparkfun_conn:JST04_1MM_RA | J4 |
| 1 | RESET | Button_Switch_THT:SW_TH_Tactile_Omron_B3F-10xx | SW1 |
| 1 | Raspberry Pi Pico | local_footprint:RPi_Pico_SMD_TH | U1 |
| 1 | SERIAL | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Horizontal | J5 |
The 7 most common of 11 parts.
It measures 114.3 × 96.5 mm and has 2 copper layers, 1.6 mm thick.
11 parts. 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.
From the suikan4github/Akashi-19 repository on GitHub, at the commit this page was made from: the board is Akashi-19.kicad_pcb and its schematic Akashi-19.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
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).

google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards


FrameworkComputer/ExpansionCards
Reference designs and documentation to create Expansion Cards for the Framework Laptop

hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI

hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!


tardate/LittleArduinoProjects
a collection of "Little Electronic & Arduino Projects", most involving electronics or an Arduino in one way or another!

basilfx/TRADFRI-Hacking
Hacking IKEA TRÅDFRI products, such as light bulbs, window blinds and other accessories.