Hi all,
I recently finished up a Sawse build and I'm having some weirdness happen. I get bypass signal, but nothing when the effect is engaged. I've gone through and done some preliminary debugging, but this one's got me stumped.
Here are some voltages:
IC1 (note: I subbed in an LM358 as I don't have a TL022 at the moment)
Pin 1: 4.627v
Pin 2: 4.634v
Pin 3: 4.628v
Pin 4: 0v
Pin 5: 4.616v
Pin 6: 4.630v
Pin 7: 4.623v
Pin 8: 9.28v
Vact 1:
LED +: 1.538v
LED - : 0
All three LDR pins read: 4.6v
The Range pot read (Fully CCW):
Pin 1: 1.423v
Pin 2: 1.423v
Pin 3: 9.28v
My power supply is a 1-Spot that is putting out 9.5v.
Would anyone that's built this board please sanity check my numbers for me? Also, would the substitution of the LM358 for the TL022 cause a problem? I researched compatibility and found references where people have used the LM358 in place of the TL022 for LFO's and the like with no problem, so I thought I'd at least get noise.
As much as the Vactrol for this build cost I'd hate for it not to work.![Wink ;)](https://www.madbeanpedals.com/forum/Smileys/default/wink.gif)
Thanks!
Andy
I recently finished up a Sawse build and I'm having some weirdness happen. I get bypass signal, but nothing when the effect is engaged. I've gone through and done some preliminary debugging, but this one's got me stumped.
Here are some voltages:
IC1 (note: I subbed in an LM358 as I don't have a TL022 at the moment)
Pin 1: 4.627v
Pin 2: 4.634v
Pin 3: 4.628v
Pin 4: 0v
Pin 5: 4.616v
Pin 6: 4.630v
Pin 7: 4.623v
Pin 8: 9.28v
Vact 1:
LED +: 1.538v
LED - : 0
All three LDR pins read: 4.6v
The Range pot read (Fully CCW):
Pin 1: 1.423v
Pin 2: 1.423v
Pin 3: 9.28v
My power supply is a 1-Spot that is putting out 9.5v.
Would anyone that's built this board please sanity check my numbers for me? Also, would the substitution of the LM358 for the TL022 cause a problem? I researched compatibility and found references where people have used the LM358 in place of the TL022 for LFO's and the like with no problem, so I thought I'd at least get noise.
As much as the Vactrol for this build cost I'd hate for it not to work.
![Wink ;)](https://www.madbeanpedals.com/forum/Smileys/default/wink.gif)
Thanks!
Andy