Custom Arbitrary Bit Banging in C

Open Source Hardware for Vintage Computers

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

Accurate frequency measurement using a Pi Pico RP2040

Cartridge for the Commodore 64 that packs a punch

ESP8266/ESP32/Arduino custom modem<->internet simulator with lots of features

Operating system and container binary deployment and upgrades

🌊 Digital timing diagram rendering engine

A2Pico

This project aims at reading the ROM content out of a mask programmed MC6801 uP.

An Apple II 80-Column Card. Based on the Videx Videoterm

A card with 4MB NVRAM for Apple ][ compatible computers which is a ProDOS compliant R/W device

An hybrid Disk ][ and SmartPort controller

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

A FAT filesystem with SDIO and SPI drivers for SD card on Raspberry Pi Pico

Firmware for the ZuluSCSI advanced SCSI emulator

A Pico W based RS232 <-> WiFi modem with Hayes AT style commands and LED indicators

Apple II Peripheral Card that Interfaces to a ATMEGA328P for SD card storage

∀2 Analog VGA card for the Apple II computer line

Firmware for the V2 Analog products

128 kB Saturn 128k-compatible RAM expansion card for Apple II

A simple repository of files needed to add a 3D footprint of the Raspberry Pi Pico board to KiCad.

Resilience4j is a fault tolerance library designed for Java8 and functional programming

Virtual whiteboard for sketching hand-drawn like diagrams

Go compiler for small places. Microcontrollers, WebAssembly (WASM/WASI), and command-line tools. Based on LLVM.

Fast, secure, efficient backup program

A collaborative book on algorithms

Conan - The open-source C and C++ package manager

JSON for Modern C++

The Python micro framework for building web applications.