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Messages - barnaby

#1
PROBLEM SOLVED ;D ;D ;D ;D  Turns out it works just fine with the proper values... Thanks for the extra set of eyes!
#2
Quote from: zgrav on April 18, 2019, 07:15:09 PM
It is interesting that you have this result from 3 separate builds for the pedal. 

I know, right?!?!?  Leads me to believe that I have a bad component/something that is the same on all 3 boards. 
Quote from: zgrav on April 18, 2019, 07:21:16 PM
what caps are you using in c3 and c33?  (2.2 UF np)
You found it!  I have 2200nf instead of 2200pf... gonna order the right parts this time  ;D
Thanks for the extra set of eyes!  I'll update on the results.
-Barnaby
#3
second pic of board.
#4
I tested the voltage on all the IC pins, they are in spec with the build.  I can provide them if you want.
When testing with an amp, I found that with the switch in the vibrato position, I can faintly hear a pitch from the amp that rises in frequency when I turn the rate knob clockwise, but dissapears when the knob is at full.
Thanks for your help!
#5
Tech Help - Projects Page / Dirtbaby No Modulation
April 17, 2019, 09:42:10 PM
I built a run of 3 Dirtbaby pedals and all of them are having the same issue: no detectable modulation.  Reflowed connections, no change.  When checking values, I found R32 and R33 were reading 50k, rather than the 100k in the schematic.  Eureka!  I pulled both of them out and put in two 100k that i tested beforehand.  But, when checking them in the pcb, they read 50k!  Any idea what is causing this?