This simple LED flasher circuit will turn ON and OFF two LED alternatively. The first LED will turn ON when the second LED is OFF for some period, then the first led will turn OFF and the second LED will turn OFF. This cycle will be repeated as long as the battery is connected to the circuit.  This LED flasher circuit can be used for your safety blinker of your bicycles or as a crossing signal for model railroads. This LED flasher circuit can be a fun stuff for your Christmas decoration  or to make your  Halloween’s Jack-O-lanterns blinking eyes.  Here is the schematic diagram of the circuit: