MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems

In application debugger for ARM Cortex microcontrollers.

Open source ARM Cortex-M microcontroller library

Reference implementation and documentation of a LoRa network node.

LUFA - the Lightweight USB Framework for AVRs.

Give your DPS5005 the upgrade it deserves

Port of MicroPython for the BBC micro:bit

rx_fm, rx_power, and rx_sdr tools for receiving data from SDRs, based on rtl_fm, rtl_power, and rtl_sdr from librtlsdr, but using the SoapySDR vendor-neutral SDR support library instead, intended t…

Sniff and decode NRF24L01+ and Bluetooth Low Energy using RTL-SDR

MCPU - A Minimal 8Bit CPU in a 32 Macrocell CPLD

WebUSB LED. Hardware, software, and firmware.

DFU protocol variant of Matt Sarnoff's PIC16F1-USB-Bootloader

Automatically exported from code.google.com/p/mphidflash

Object Oriented version of FatFs

Source code for the IQ Control Center app

Buffered SPI / UART bridge for XBee modules.

Replacement firmware for the Ding bike light -- https://dinglights.com/