The goal of this gadget is to turn on , your bathroom FM radio , when your
powerup the light. Very easy to build, look the shem bellow.

The voltage input is +9/12v don't care, the LDR is a simple photresistor, http://en.wikipedia.org/wiki/Photoresistor
You can tune the sensitivity with a adjustable resistor.

About This Instructable



More by j3tstream:Revive an old garden lamp with a solar panel Dedicated Automobile Traffic Monitor With Raspberry Pi Powering automatically a FM-Radio with a simply ambient light switching system  
Add instructable to: