VU Meter

[Ioannis]

Now, if I understand what you try to say, is that, your noisy alarm has strong influence on your comparator? Like changing the setpoint?

Ioannis

[Acetronics2]

Hi, Andre

If I understand it right ...

one led column (I-port C) is the meter, and the other ( j -portB) is the ref index ...

Now, you want to catch your ref level "in flight" ... ( Porta.2 turns to low )

1st problem...

time before you see level and you press the button ... level has changed.
Why not extract the MAXIMUM of the readings while button pressed ???

2nd problem...

time you keep the finger on the button, your ref level is changing ... ( k= i-1 in a continuous LOOP )
Your Button must act as a OneShot for K value ! ... or see Upper

Alain

[Andre_Pretorius]

thank you for everybody, i got the problem fixed by improving the rectifier sircuit after the op amp and before the PIC everything works good now

Thanks again for everybody's advice