A big red pulsating emergency stop button: actually a USB keyboard in disguise.

Dependencies:   Pulsator USBDevice mbed Debouncer

https://igcdn-photos-f-a.akamaihd.net/hphotos-ak-xaf1/t51.2885-15/11208187_762945727138101_782976670_n.jpg

Debouncer.lib/shortlog@e69a72de6877: not found in manifest