LED Bike Light System
This LED Bike Light System can be made to be just a headlight or both a headlight/taillight bike light.The circuit use simple electronic components such as LM555,PNP Transistor (2N3906),NPN Transistor (2N2222) plus some resistors and capacitors.
   LED Bike Light System
For more detail LED Bike Light System website
www.instructables.com