Using the serial monitor that is built into the Arduino IDE (Integrated Development Environment, aka desktop software), write a program that reads in a value and echoes back the same value.

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 ha… ...

To get started, head to Arduino’s software page and download the proper program for your system. If you’re using Windows 8.1, for example, install the “Windows Installer, for Windows XP and ...