2006-06-27 06:55:45 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
try:
http://ourworld.compuserve.com/homepages/Bill_Bowden/page13.htm#ir.gif
or
http://www.aaroncake.net/circuits/irremote.htm
or
http://www.epanorama.net/links/irremote.html
http://ourworld.compuserve.com/homepages/Bill_Bowden/page8.htm#light.gif
2006-06-27 07:03:53 · answer #1 · answered by Electro-Fogey 6 · 0⤊ 0⤋
LED can works both ways, if you impige IR light on a IR LED there will be an electrical current but the signal will be weak. Try using a photomultiplicator or photodetector.
2006-06-27 06:59:03 · answer #2 · answered by PeteRock 2 · 0⤊ 0⤋
Use a camcorder that has night vision. The night vision sees in near IR. The remote controll will look like a flshlight.
2006-06-27 06:58:38 · answer #3 · answered by dch921 3 · 0⤊ 0⤋
Use a phototransistor.
2006-06-27 06:57:58 · answer #4 · answered by poorcocoboiboi 6 · 0⤊ 0⤋