IR noise reduction

Thread Starter

Msinks

Joined Mar 3, 2012
22
I successfully built an IR remote control extender circuit (for Image follow this link: http://www.aaroncake.net/circuits/IR_Remote_Extender_Schematic.gif). The only problem is the noise. I temporary replaced D1 with an LED to show if the circuit was receiving the signal from a remote control and it flashed at the press of a button on the remote to show that it was, at 3 volts. But at 5V which the circuit requires the LED stays on for good. It does not go off! could this be an indication of noise. If so how can i reduce it? (The only difference I made was to use NE 555 for the timer)



 
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jimkeith

Joined Oct 26, 2011
540
Measure the voltage at pin 5 as you vary Vcc--that may provide a clue
Possibly ambient light is messing with the sensor--try covering it to see what happens
 
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