I am experiencing a weird problem with these IR’s.
I had them on the bench and did all the testing, etc beforehand and tried them at different distances.
I have now placed them on my layout at a distance of 18cm apart and before I wire them permanently, I am testing to make sure all is working fine.
However, the break beam on the sensors will not work unless I virtually touch the receiver (makes no difference if I touch the sender) or I completely cover the receiver.
I can even turn the sender unit away or the receiver away and still the break beam doesn’t send the signal down the white wire.
I am using a 5Volt 1amp switch mode psu (which is what I was using to test on the bench). I am getting the same result on each set of IR sensors.
When I place a cover over the receiver, I am getting the full 5v at the end of the white wire.
Any Ideas ???