Delay pedal with dead feedback, need advice.

Started by ruffaroo, April 29, 2017, 06:05:30 AM

Previous topic - Next topic

ruffaroo

Hello! I've recently just finished building the awesome  Abductor II after deadastronaut (LinK: http://www.diystompboxes.com/smfforum/index.php?topic=110419.0 )
and out of sheer luck and stubbornness I've gotten the sound and functionality.   :icon_confused:

The only thing that's left now is that the feedback and level1 pots, they do nothing..  :icon_frown:
When I turn them then there's no difference in the sound.

There are 4 levels in this pedal, to which respond to the pots corresponding them.
So after I crank up all the levels and feed and play, I get 3 bounces and then it dies out.

I'm still trying to figure out how this circuit works as I'm suppose to give an analysis about the behavior of delay so
this would help me so very much. Beneath is a picture of the build and a picture of me trying to follow the pattern of sound
passing through the TL072 amp.

Board :
http://imgur.com/a/ZaeT1

Schematic pin-point on where feed and level1 are located:
http://imgur.com/a/5Daz4
(I've added 'Pure' 'not pure' 'messy' to show where it stops being a pure 440Hz sinus signal into a >x<1MHz signal. Apologies if this is too vague,
I'm trying not to bombard this post with useless information..  :icon_frown: )

Me playing the sound:
https://vimeo.com/215312379