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.

Collection of tools that make printing of plain text and images to one or many serial thermal printers easy. USB, serial (RS232) and TCP/IP printers are supported. Escper is useful for Ruby based Point of Sale systems that want to print receipts or tickets, but also suitable for stand-alone applications.

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.

A gem providing access to Rapiro with SerialPort.