Background picture taken from Jayson Leow’s Flickr stream, which was licensed CC-By-Sa at the time we took it.
The Gauge used for the power indicator and shot timer :
// Copyright (c) 2010, Freddy Martens (http://atstechlab.wordpress.com),
// MindTheRobot (http://mindtherobot.com/blog/) and contributors
// All rights reserved.
The STK500 implementation was inspired by https://github.com/robokoding/STK500