upand_at_them
Active Member
I was lying in bed the other morning listening to the birds chirping outside and I was wondering if I could build something to monitor the activity. They start around 4:30AM and trail off around sunrise.
I was thinking of a simple bandpass filter? Maybe feeding the output to a zero-crossing detector and then to a PIC?
Any thoughts?
Mike
I was thinking of a simple bandpass filter? Maybe feeding the output to a zero-crossing detector and then to a PIC?
Any thoughts?
Mike