Generic IR detection
Javalin
Posts: 892
All,
If I want to pickup IR pulses with a propeller, the raw pulses, not the pin-goes-low if 38khz is recieved·TV remote control processed·variety.· How best to do it?
A thought of an IR photo-diode?· Ideally i'd see a 38khz (or whatever) frequency on a o'scope.
??
James
Post Edited (Javalin) : 10/5/2009 12:43:57 PM GMT
If I want to pickup IR pulses with a propeller, the raw pulses, not the pin-goes-low if 38khz is recieved·TV remote control processed·variety.· How best to do it?
A thought of an IR photo-diode?· Ideally i'd see a 38khz (or whatever) frequency on a o'scope.
??
James
Post Edited (Javalin) : 10/5/2009 12:43:57 PM GMT
Comments
If the contrast between light and dark is small you can use a circuit called transimpedance amplifier
with an OP (Operational amplifier).
I don't have the circuit handy. Just a quick google-shot Understand and apply the transimpedance amplifier (Part 2 of 2)
best regards
Stefan
James