RoyalScam Posted March 15, 2009 Report Share Posted March 15, 2009 OK Boxers! I won't even pretend that I understand micro controllers at this point, but I'm pretty sure that this may be the next big thing since the lighted push button switch. I somehow stumbled onto this doc and thought that someone here with better chops than I might find this as fascinating as I did. I didn't know that an LED in it's reversed biased state can actually be used as a photodiode, according to this doc a device can be made using the LED as both an indicator and input device.I believe that this is being used in this video;http://video.google.com/videoplay?docid=-6431755676396318073And the paper describing the circuit is here;http://www.merl.com/reports/docs/TR2003-35.pdfWhaddya think, Sirs?RoyalScam Quote Link to comment Share on other sites More sharing options...
Screaming_Rabbit Posted March 15, 2009 Report Share Posted March 15, 2009 Search the forum, there already is a thread about this. As far as I can remember, the problem was using it in a matrix and scan all the LEDs in a reasonable time.Greets, Roger Quote Link to comment Share on other sites More sharing options...
RoyalScam Posted March 16, 2009 Author Report Share Posted March 16, 2009 Well, poop. I should've known it's been seen before. Nice dream though. Besides, Forrest Mims was cited in the article and it reminded me of all the great things I learned because of him, back when I was a geeky kid with a Library card.Scam Quote Link to comment Share on other sites More sharing options...
stryd_one Posted March 16, 2009 Report Share Posted March 16, 2009 Search the forum, there already is a thread about this. As far as I can remember, the problem was using it in a matrix and scan all the LEDs in a reasonable time.that's correct... mind you, it wasn't done in ASM, but in BASIC... so, if someone were to do it properly, and/or perhaps use a certain fancy new 32 micro powered dev board, maybe they would have more luck.... Hypothetically if I were to know someone in that situation I would tell them good luck from you ;) Wink, nudge, etc. Quote Link to comment Share on other sites More sharing options...
lucem Posted March 19, 2009 Report Share Posted March 19, 2009 Hypothetically if I were to know someone in that situation I would tell them good luck from you WinkHm, to whom may he be referring to with that? :o Quote Link to comment Share on other sites More sharing options...
stryd_one Posted March 19, 2009 Report Share Posted March 19, 2009 I have no idea. *whistle* Quote Link to comment Share on other sites More sharing options...
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