build-once run-anywhere c library

The single instruction C compiler

Transmits AM radio on computers without radio transmitting hardware.

QEMU Interactive Runtime Analyser

DOSBox-X fork of the DOSBox project

The lcc retargetable ANSI C compiler

tic-tac-toe in a single call to printf

A C++ bare metal environment for Raspberry Pi with USB (32 and 64 bit)

A tiny C header-only risc-v emulator.

USB host/device implementation using PIO of raspberry pi pico (RP2040/RP2350).

ESP8266 Analog Broadcast Television Interface

Floppy drive emulator for Gotek hardware

Very Tiny Palmtop Vector Network Analyzer

A fork of the NimBLE library structured for compilation with Arduino, for use with ESP32, nRF5x.

Transmit LoRa Frames Without a Radio

Analogue TV transmitter for the HackRF

Firmware patches for the TYT-MD380 handheld radio.

Astronomy Engine: multi-language calculation of Sun, Moon, and planet positions. Predicts lunar phases, eclipses, transits, oppositions, conjunctions, equinoxes, solstices, rise/set times, and othe…

32-bit RISC-V CPU in ~800 lines of C89

RunCPM is a multi-platform, portable, Z80 CP/M 2.2 emulator.

Arduino UNO-compatible robotic simulation of the C. elegans nematode

Multichannel SDR based on fast convolution and IP multicasting

Linux on a $0.15 RISC-V microcontroller

A self-hosted Ada-inspired programming language for very small systems.

Jo's Embedded Serial File System (for Standard Serial NOR-Flash)

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

uSDR implementation based on a RP2040 Pi Pico

Linux kernel driver for PATA bit-banging over GPIOs

A collection of emulators mostly of retrobrew style systems