Real clone Alonso-PD

[ouiarabe]

Originally Posted by ANDREAS

Via a video i cannot find solution, but maybe...
Unconnect C15 and connect power supply. If you have the same tic-tic on buzzer, replace buzzer with other attchment pic.
best regards

hi all
thank you very much professor ANDREAS
I executed your recommendation and it seems that the problem is solved
I'll get a real field because I do not have a test field
another question please is it normal for the PD detects all ferrous materials at 20-40 cm and 1m the LCD television
thank you