Hello, I recently bought the MK139 Velleman Clap ON/OFF Switch and assembled it, to my eye, perfectly.
However, when I connect the power supply, the clap LED is constantly on. To check the PIC I have disconnected them and the light goes out, therefore I know that they work fine. But after trying everything mentioned on other similar posts, I still have no success.
Is there any way I could possibly send you my circuit board for you guys at Velleman to inspect and make sure it is all OK?
Thanks very much for your time
FIlip Harding