Thread: IR Detection
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Wetmelon
#1
Aug17-10, 12:42 AM
P: 154
Hey experts! I've designed an infrared detection circuit to drive a motor, but I need the circuit and my math checked. I tried 5Spice, but I can't get my head around it. Circuit image attached.

Do you know about how far I would be able to detect someone crossing in front of the light? I need 10-20 feet. Even farther would be great!

Edit: I should also mention that the TIP41C transistors are the correct components, but I am only using what Eagle had in its library for the other components, so they are not necessarily to spec.
Attached Thumbnails
IR Detector.png  
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