A coworker is looking for a device that will detect an infrared signal from something such as a TV remote and with that input it will illuminate one of three lights. He is looking for something like a stop light. When it detects infared it will just cycle from one light to the next one from green to yellow to red and then back to green. It would change one light with every one signal it detects.
A simple IR detector would be triggered by sunlight and incandescent lamps. You need something that is sensitive to the carrier frequencies of IR remote controls. You can get IR remote control receiver modules from digikey for about $1 each.
Here's one now!:
http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=141442&Row=911615&Site=US
This part operates at 36.7 kHz. There are at least two other standard freqs. These would normally interface to a uC that would decode the serial data on the output pin. Since you don't need the data, just knowing the signal is there is enough, you can use the data to trigger a oneshot that drives simple logic to drive a shift register connected to 3 LEDs.
I would program a uC to do it, but if you don't have the equipment/know-how you will need to go with logic ICs.
I_F
Here's one now!:
http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=141442&Row=911615&Site=US
This part operates at 36.7 kHz. There are at least two other standard freqs. These would normally interface to a uC that would decode the serial data on the output pin. Since you don't need the data, just knowing the signal is there is enough, you can use the data to trigger a oneshot that drives simple logic to drive a shift register connected to 3 LEDs.
I would program a uC to do it, but if you don't have the equipment/know-how you will need to go with logic ICs.
I_F
. Thank you very much for the advice.- Status
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