A Ruby gem which takes the pain of continuously reading data from a serial port away and lets you focus on dealing with the data received. This was written specifically for reading in data from an ID-20 RFID card reader and running custom scripts to automatically perform various tasks when patrons scanned their badge at the [MN Mill](http://mnmill.org) (logging attendance, etc). Custom scripts are loaded from `ENV["HOME"]/millworker/tasks` and are executed in alphabetical order. Each script is executed with the ID of the badge passed in as an argument. For example, a script called `tweet_id.rb` existed in the afformentioned directory, it would be executed as if you had opened up a command terminal and typed `tweet_id.rb RFID_TAG_ID_HERE`.

MarvelMind Indoor GPS driver.

A simple way to control your Monoprice 4x2 HDX*** Created for use in https://github.com/defektive/hdx-api

Interface library for MotorControlBoard board

MovingSign Communication Protocol V2.1 Implementation in Ruby

UART class library using serialport gem. Compliant with mruby, mruby/c common I/O API guidelines.

Texas Instrument MSP430 BSL Ruby library

Net-Openvpn is an openvpn library for configuring a local OpenVPN service

add your serialport object, and you'll get callbacks every time the serialport gets logs.

Control a Lego Minstorms NXT 2.0 Brick See http://github.com/tchype/ruby-nxt for more information.

A Ruby API that interfaces with ELM327 compatible devices over serial.

Performs accessing GPIO, etc. in Object-Oriented way on BeagleBone Black through Ruby.

This is a library that reads and returns all (known) measurements that are returned by the P1 smart meter as used in the Netherlands.

Read values from the Grin PhaseRunner Controller via Modbus RTU suitable for logging

Rubygem for sending commands to 'Pi-LITE' board through serial port communication

The PlcAccess communicates with PLCs. You can get values or states of PLC devices.

Downloads labels from virtusprinter server and sends them to a serial printer

This is a very simple framework to create small frontends in a webserver

The Twenty-First Century Amateur Radio Project

Rain8net irrigation controllers are serial port RS-232 devices for remote control of irrigation zones. This gem provides a ruby interface to control them.