- opensprinkler 206 Open-source Arduino-based Sprinkler Valve Controller
- hid-serial 58 HID-class serial communication for AVRs using V-USB
- squarewear 27 SquareWear is an open-source wearable electronics controller board. This repository contains the hardware design files, software library, and software demo.
- ESPToy 26 ESPToy is an Arduino-compatible gadget for the ESP8266 WiFi module
- RFToy 15 Arduino library and example code for RFToy -- an Arduino-compatible gadget for RF modules. Check http://rftoy.rayshobby.net.