Behold… the Arduino Powered Twitter Monkey!
The Twitter Monkey is powered by an Arduino and two servo motors. He patiently monitors Twitter for a specified keyword, and when he sees that keyword, he goes bananas, flapping his arms up and down like a maniac. (For his debut at Web414, the keyword is web414.)
Twitter Monkey was made possible with materials from Adafruit Industries and the local Dollar Tree. The code is heavily based on Alertuino code from MCQN Ltd., creator of the Bubblino.
Update: There’s also a video.