I am trying to read some IR signals. There is a synchronizer emitting modulated IR signals. And my receiver must receive those signals and interpret them. Actually, there are only two different modulation: signal 1
I put a photodetector in front of the synchronizer and get these two waveforms on the oscilloscope. These are 2 signals that my receiving circuit should interpret.
So in overal, transmitted IR is something like this:
This is the schematic:
output directly goes to microcontrollers interrupt input.
So here is the problem. Synchronizer, always transmit IR this way. Never changes. But my IR receivers output goes crazy most of the time. Some times it responds those coming signals like this:
I can never tell! Why does receivers output varies like this? Received IR signals or their RSSI never changes, I do not move the receiver or the transmitter but receivers output changes in time. Can you explain why is this happening and how can I fix it?