So let’s say your using an Arduino in your project. You already have the hardware-based serial interface working with one portion of the project and need a second serial port for unrelated hardware.

Arduino has released a new power management library designed for Arduino Pro modules to help users monitor battery usage, fine-tune charging parameters, and optimize the power consumption of their ...

This library provides full access to the functions of the MY1690 MP3 decoder through a serial connection and a "busy" pin. This library is very simple to use with either a hardware or software serial ...

The SPI protocol is a "standard" for serial communication, however there exists many variants. This document only describe the four modi typical used in the Arduino context. The SWSPI library ...