In this Instructable the author will show you how to make a simple infra red IR detector.The basic premise at work in an IR remote control is the use of light to carry signals between a remote control and the device it is directing. Infrared light is in the invisible portion of the electromagnetic spectrum.
First take the Fototransistor,bend it and solder it. Now take the LED and solder it.
Take the resistor and connect the negative(shorter) pin of the fototransistor and the positive(longer) pin of the LED whit the 330 Ohm resistor, and cut the pins. Solder the switch in between, a little bit down.
Now take the 9V battery clip and cut it about the lenght so that you can connect it to the switch and the fototransistor. Save the black wire from the battery clip because you are going to need it.
Connect the black wire from the clip to the switch, and the black wire that you saved, from the switch to the negative(shorter) side of the LED.
Connect the red wire to the remaining pin,the positive(longer) side of the fototransistor.
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