re long distance ir detection in article apr dres dnd ca sburton dres dnd ca stan burton writes i would like to be able to detect the angular position low accuracy of an ir emitting source at a distance of about meters more is better in daylight the ir source could be emitting a signature i m leaning toward khz square wave with duty cycle i am considering the use of a quadrant detector from centronic inc to give information to a pan tilt head to point the sensor and thus determine the angles for the source i am considering wazing the heck out of an ir led s possibly an optek op or motorola mled wazing would mean at least amp current pulses at this current the duty cycle of the led drops to and i would need to cycle five of them in turn to get the required has anyone done something like this why don t you just run one led at khz and use a flip flop at the receiving end to divide by and give you a good square khz signal just a thought lori stan burton dnd crad dres dtd mss agcg sburton dres dnd ca dre suffield box medicine hat ab canada t a k red fishy wins lori gardi ext dept of astronomy lgardi uwovax uwo ca university of western ontario london on canada n a k
