[sdiy] Electric Druid VCADSR filter hysteresis

[Jack Jackson]

Tonight I've built Electric Druid's VCADSR circuit and it seems to be working fine except the opamps of the low pass filter lock at +15V when there is no input (or almost no input) from the PIC. This means they always have to 'jump' down to 0-5V when the ADSR is in use.

I've double checked my breadboard of the circuit and I can't see any errors. Any idea what I could have done wrong?

Best Regards,
Jack
Like