clockdryve
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I have heard of using Diodes as receivers in like Diode "power meters"...where they would use a "Green" diode in the circuit connected to a DC voltage meter... to AIM your "green laser" of questionable power to get power output readings. But I do know the Diode IR transmitters work as receivers too because I have made one and heard voice on it (used in dark because it is quite light sensitive for daytime) *very noisy*. And the Radio Shack variety receives pretty much the complete light spectrum.
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