Other hardware (e.g., arduino) may be supported with minor firmware modifications

A Ruby interface for blinky-tape-test-status

Monitors the build status of projects on http://codefumes.com and sends out notifications via a USB-connected ZigBee wireless chip.

Automate tests for embedded system based on a specific configuration.

A way to interface with the celadon RCV-3000 receiver

Adds serial port support to Celluloid::IO

Comunication of with GSM modem

Read and store log output from the Grin Cycle Analyst and optionally Phaserunner

Library and command line utility to download data from Fluke 28x series DMMs

Arduino part of Domotics

douban.fm.arduino

Arduino Prototyping API for Ruby

This gem uses a serial port to communicate with dumb terminal hardware. Such as a VFD Pole Display.

EventMachine compatible serialport library

This is an implementation of the XML API for the Rainforest EMU in ruby.

Serial library for Farmbot

Arduino connect plugin.

Geppeto provides a Ruby API to Pinoccio microcontrollers by means of a TCPsocket or a Serial connection, forgoing the need to use api.pinocc.io.

Hook up easy button via USB serial port and trigger shell commands

Gem to control the baud rate used by gpsd to communicate with GPS module