amirahmadian
Member level 1
Problem with ASK receiver module
Hi everybody.
I'm experimenting with an ASK receiver module (PCR1A 315MHz module. It's Chinese,I think). I just tested the ouput of module in absence of any signal (without any transmitters nearby). I expected the output (Data pin of module) to be constantly low (or high) because there were no signals. But the ouput flickers, I mean it changes to low and quickly comes back to high repeatedly (I monitored the output using an AVR micro). And another strange behaviour, When I touch the antenna (or keep my hand near it) the output becomes constant and it settles down to low.
I've used a simple 20cm wire as the antenna. (I don't know very much about antennas, unfortunately!)
Is something wrong with the module or is there a problem in my antenna,etc ?
Thanks.
Hi everybody.
I'm experimenting with an ASK receiver module (PCR1A 315MHz module. It's Chinese,I think). I just tested the ouput of module in absence of any signal (without any transmitters nearby). I expected the output (Data pin of module) to be constantly low (or high) because there were no signals. But the ouput flickers, I mean it changes to low and quickly comes back to high repeatedly (I monitored the output using an AVR micro). And another strange behaviour, When I touch the antenna (or keep my hand near it) the output becomes constant and it settles down to low.
I've used a simple 20cm wire as the antenna. (I don't know very much about antennas, unfortunately!)
Is something wrong with the module or is there a problem in my antenna,etc ?
Thanks.