Quote:
Originally Posted by Jeg
Hi friend
Looks like something is wrong, but wait for Franco to tell his opinion as he is very experienced on this. 
(try connecting your voltmeter at the output of your sensor. When you touch the antenna, does the output signal drops?) |
I do not know where to put the test probe to measure the voltage..I have have no idea if it is droping or not..
This time I change te 10k potentiometer with 25k and remove the sensor stage for a while but there is no buzz and led ligths at all..I have noticed that when I touched everywhere on the board the led and buzzer beeps also..I think it is grounded..
Any suggestions my friend..