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Deathclaw

Started by jlhofman, November 16, 2016, 01:30:29 AM

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jlhofman

I just finished building Deathclaw.  And it doesn't sound quite right. 

Here are my voltages:
9.68v Supply

IC1:  TL072      REG   LM78L05     Q1/Q2   MIN   MAX
1       4.71         IN        9.41          E       1.54   1.54
2       4.71         GND     .5mV         B       2.16   2.16
3       4.70         OUT     5.04           C       2.10   2.10
4       0.0
5       4.70
6       4.71
7       4.71
8       9.40

IC2/IC3     PT2399      PT2399
1               2.04             5.04           
2               2.39             2.42
3                .8mV            .7mV
4                .8mV            .7mV
5               2.75             2.79
6               1.95             2.09
7               2.36             2.86
8               2.65             2.86
9               2.42             2.45
10             2.42             2.42
11             2.42             2.42
12             2.39             2.42
13             2.43             2.42
14             2.50             2.43
15             2.42             2.45
16             2.42             2.42

According to the instructions, Q1/Q2 are MIN/MAX are based on MIN/MAX of the delay.  I get no change going from one extreme to the next.  And some of the PT2399 voltages are off a bit.  Please point me in the right direction.  Thanks in advance.

jimilee

So you're saying you get delays at a constant rate no matter where you set the potentiometer?


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Pedal building is like the opposite of sex.  All the fun stuff happens before you get in the box.

jlhofman

There is some variation.  But definitely no infinite repeats.

m-Kresol

could you describe your problem a bit more detailed please? We need to know what part of the effect isn't working as it's supposed to so we have a starting point.  :)
I build pedals to hide my lousy playing.

My projects are labeled Quantum Effects. My shared OSH park projects: https://oshpark.com/profiles/m-Kresol
My build docs and tutorials

jlhofman

It sounds more like reverb than delay.  The short delay is ok.  But there's really no medium, long or infinite delay.   

jlhofman

Thanks everyone who tried to help.  I resoldered the delay pot.  And now it works fine.

jimilee

Killer


Sent from my iPhone using Tapatalk
Pedal building is like the opposite of sex.  All the fun stuff happens before you get in the box.