Changes

* Leap http://www.leapmotion.com/

* Ultrasound senro HC-SR04: http://shop.boxtec.ch/pub/iteadstudio/HC-SR04.pdf

=== HC-SR04 ===

* https://code.google.com/p/arduino-new-ping/

* Using [https://code.google.com/p/arduino-new-ping/wiki/NewPing_Single_Pin_Sketch one pin] on the Arduino doesn't seem to work, with [https://code.google.com/p/arduino-new-ping/wiki/Simple_NewPing_Example 2 pins] it's OK

== Galerie ==