Circuit Design Since the LED strip is at the end of the circuit, it has approx 9V. It can be brighter; So; I just try to use the 555 part of the circuit as a switch, the way I used photo sensor and PIR motion sensor parts with BC 547s, and try to get the energy of the LED strip directly from the batteries. It was not possible to arrange any solution. Please share if you have any suggestion. Thank you.