Now addition of a vibration motor as a feedback for touch/kiss is considered. For this we will be using a BC547 transistor - The base is connected to a resistor and in turn to an arduino. The emitter is connected to ground where as the collector is connected to one end of the motor while the other end of the motor is connected to VCC. When the arduino pin goes high, The motor's flow gets complete and it just buzzzzzzes :)