JumperTouchSensor library V1.0 by JX Pan  Shared under CC Attribution-ShareAlike 3.0 Unported license, see more details here :http://creativecommons.org/licenses/by-sa/3.0/legalcode It basically turns jumpers into cheap (and not as accurate) touch sensors, aka Native Capacitive Sensors, taking only 1 digital pin.  The only function returns integer between 1-17. If the bare end of the jumper attached to “pinToMeasure” is pressed by your finger, the return value would be 2 or more  Library itself is based on this page: http://playground.arduino.cc/Code/CapacitiveSensor/   The example is based on this page: http://tieba.baidu.com/p/2060482431  This code has no warranty of any kind.  Read more description including safety information before you use it on:   http://playground.arduino.cc/Code/CapacitiveSensor/   Have fun.   Jinxin,  5/27/2014 email：736107120@qq.com