The Arduino Uno is an open-source microcontroller board based on the Microchip ATmega328P microcontroller and developed by Arduino.cc.

In this article, we won't control anything with output pins. Instead, the Arduino will communicate sensor data to a Linux notebook, over the USB line. Modern microcontroller modules, like the Arduino, ...

I'll be focusing more on I/O and analog based microcontrollers, such as those running Arduino, and using Atmel chips as examples (these are most commonly available, and easy to program).