Another problem regarding vu meters.

[ubaid88]

Ok iam having a new problem regarding analogue board. I have still not connected anything to pad connector 20x2.
But iam getting continuous midi activity to full level in first 4 channels of both first row and second row, on lcd screen, if i connect my analogue pcb with digital. Otherwise every thing fine with digital pcb.

[dmitri]

There is probably a short/break or a loose connection around the first 4051.

[ubaid88]

There is probably a short/break or a loose connection around the first 4051.

Solved.
Again bad wiring to digital board. Sorry for that.

But there is strange thing if i touch metal part of diodes. Then i see midi signal.

[dmitri]

There is probably a short/break or a loose connection around the first 4051.

Solved.
Again bad wiring to digital board. Sorry for that.

But there is strange thing if i touch metal part of diodes. Then i see midi signal.

This is normal, your body induces electrical noise/signals. Actually this is how it may be tested without attaching piezos.