TOTEM is a 38 keys column-staggered split keyboard. It meant to be used with a SEEED XIAO BLE or RP2040

各种LInk大合集

all espressif stuff will committed here

Portable games console, designed from scratch: CPU, graphics, PCB, and the kitchen sink

K210 PCB YOLO

Some ultra low cost, unique layouts mechanical macropad using CH552G

Collection of cartridges, adapters, and replacements for the Commodore C64

An open-source handmade smartwatch. All of the codes, PCBs and schematics are available. ⌚

A replacement for the classic TMS9918A/TMS9929A VDP, powered by a Raspberry Pi Pico

Not your average Soil Moisture Sensor

stm32f072 dev board with arduino nano alike pinout

a simple and cheap vector network analyzer, including support software

Fanpico: Open Source Programmable PWM (PC) Fan Controller

PMW3360 optical mouse sensor breakout board, support both 3.3V and 1.8V logic

Small version of the famous component tester from mikrocontroller.net

The HBC-56 (65C02/TMS9918A/AY-3-8910 retro computer) fully emulated on a Raspberry Pi Pico

Polyphonic Digitally Controlled Oscillator (DCO) controlled by Raspberry Pi Pico PIO

USB Power Delivery Testing Device and Variable Power Supply

Hard- and Firmware to control different EF and EF-S lenses

Lagom is an easy to build 65% keyboard using a discrete microcontroller and only through hole components