How do i wire a circuit to make an LED flash from a 1.5 volt battery.
As was said in the other answer, you will need something to up-convert the voltage and also gate the LED on and off to flash. Most will work via a ‘Voltage Doubler’ or Charge Pump type approach. There are many ICs as well as circuit using individual parts like transistors which which are designed for doing just this. Doing a Google search for ‘LED flashing 1.5v’ brings up a LOT of examples if you are the solder and wire type of guy. Here are three: http://www.redcircuits.com/Page87.htm http://www.discovercircuits.com/DJ-Circuits/1vled3.htm http://focus.ti.com/lit/an/slaa105/slaa105.pdf Best of luck!