TIMING CALCULATORS FOR LM555

Resistor values are in Ohms (1K = 1000) - Capacitor values are in Microfarads (1uF = 1)

  NOTE: The leakage currents of electrolytic capacitors will affect the actual output results of the timers. To compensate for leakage it is often better to use a higher value capacitor and lower value resistors in the timer circuits.

LM555 Monostable Oscillator Circuit Diagram

LED Bike Light System 2N3906

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.

 My NiteRider light was off getting fixed at the factory and I needed something for my daily commute. I have used it in a 50 minute pouring rain commute on the way in to work and it worked like a champ.