Guys my fren need a timer to control a RC car. It supposed to work like this,we set the time for the car to operate. For example we set 5 min on the timer,so the car will only move for 5 min n then stop. He need 3 timing,5 min,10 min and 30 min. So the timer must be an adjustable one with a switch. After the time finish,the car will stop,then we need a reset button to set the time again.This timer will be connected to a relay which connected to the motor of the car. I think this can be achieved with 555.But i dono much abt 555. Hope u guys can help me.