About Arduino Uno R3
Your friends think building a robot butler is a sign of a midlife crisis, but you know the time is right to fulfill one of your childhood dreams. First, you need an Arduino Uno R3 to serve as the brains of your mechanical creation. It is the third generation of the Arduino board, a microcontroller that packs most of the silicon you need to bring alive any electromechanical device. The Arduino Uno R3 builds on the ATMega328 platform and has 14 digital inputs/output pins, six analog inputs, a USB connector, a 16 MHz crystal oscillator, 32 KB of flash memory, and 2 KB of RAM. These may not sound like much in the way of processing power but the Arduino Uno R3 board appeals to hardware hobbyists because it is a tiny, self-contained, and complete processing unit that is also open-source and highly adaptable. It is the building block of many complex computing systems and you can program it to direct your robot butler to fetch drinks. Unleash your inner DIYer when you pick up all the Arduino Uno R3 boards you need from the large inventory of single-board computers on eBay.