Capacitive Sensing

Capacitive sensing with arduino can easily amaze your friends as it can easily sense human touch through any conductive material such as metal, graphite (pencil drawing), or even fruits (juicy)! First of all, you will need to download and install the CapitiveSense Library from here. Restart your arduino and you should beable to see examples code likes below: capacitive example   Then, construct a circuit with arduino uno board. The resistor I using here is 10k ohm but the best would be 1M ohm. sketch_bb   You will need to upload the following sketches: Touch each end of the sensor and you should start seeing value changes in serial monitor. You may connect it with any conductive material, in this case, i choose vege and fruits. 20141201_220147 You may further enrich the output using processing + serial. The outcome: