[Joe] was experimenting with his Arduino ... range for communications. To transfer data between the two devices, he had to bit bang the signal in software, since the Arduino’s UART has a lower ...

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.

The associated demonstration code continually streams increasing integer values through the Arduino UART to the transmitter ... Find the Arduino fibre optic communication shield product page here – ...

The need for a second UART port ( and one that is not shared with USB) on the Arduino Uno is so great that the “SoftwareSerial” library in included in the Arduino IDE. It emulates additional ...