Hi Most of the IR LED's sold at Radio Shack are the 840-880 nm wavelenght type. The Sharp tin can requires the 940 nm wavelength IR beam if my memory serves me right, it also requires to be modulated at 38 or 40 kHz depending on the model. This 38 (...) (26 years ago, 2-Nov-98, to lugnet.robotics.handyboard)
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