kicad

🚁 轻量级无人机飞控-[Drone]-[STM32]-[PID]-[BLDC]

all espressif stuff will committed here

NANDO - NAND Open programmer

USB-PD soldering station for JBC C245 handles.

I2C based soil moisture sensor

Euclid probe, a magnetically coupled Z Probe

An ESP8266 based RS232 <-> WiFi modem with Hayes AT style commands and LED indicators

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

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

A 4x10 CFX spaced low-profile mechanical keyboard.

A series of single-board Motorola 68k computers with support for modern Linux

🌏 Detecting seismic wave using 3 geophones and 3-axis accelerometer, pack & send data to AnyShake Observer over RS232 / RS485 serial.

A PCI Express card with an inbuilt PWM fan controller and mounting points for an 80mm fan.

quite a big hexdump display

IEEE Reion 1 Micromouse competition.

A smol and simple STM32G431 based Analog to USB toolkit.

Digital (RS485 - based) soil moisture and temperature sensor

Anotter USB temperature logger that can record up to four channels with thermocouple or NTCs connected via CDC directly or SCPI to USB.

A collection of 68k computer projects, including a unix-like operating system written in C that runs on them

M19O2 open source hardware Oxygen Concentrator based on the Pressure Swing Adsorption cycle aka Skarstorm cycle