The Danger Shield is an add-on for the Arduino micro controller board. It contains a variety of fun and useful electronic circuits that you can use to do fun and useful things. It is a fully self-contained shield. You plug it into your Arduino, and you can immediately start using it. No extra things to hook up, no external components. Just a really rad board ready to rock. Some of the features of the board are: 3 x linear sliders w/ integrated LEDs (each independently hooked up to PWM) 03 x pushbuttons 2 x indicator LEDs (each with a PWM) 1 x piezo buzzer (for making noise!) 1 x temperature sensor 1 x light sensor 1 x knock sensor 1 x 7 segment LED (with shift register) power LED and reset button Links Danger Shield assembling and Usage examples