Mojo Hand FX - DMBL  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
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DjPsychic
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Post by DjPsychic »

Mojo Hand FX DMBL

I really love this pedal. Anyone have a layout or know what the basis of the pedal is?

Thanks

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gght
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Post by gght »

Gut shot. Upper right looks like diode and transistor feed back loop??


https://toy-love.hatenablog.com/entry/2 ... 1397135083

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lead2203
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Post by lead2203 »

gght wrote: 07 Jun 2020, 06:18 Gut shot. Upper right looks like diode and transistor feed back loop??


https://toy-love.hatenablog.com/entry/2 ... 1397135083
Says in the description that it is like the real circuit found in the amp !?!? I didn't know the Dumble amp circuit was a hi voltage tube screamer :slap: :lol:

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Intripped
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Post by Intripped »

i've uploaded the pics here, so they don't get lost
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Post by okgb »

That arrangement looks closer to a zen drive , no? no buffers either ?

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Post by DjPsychic »

Was looking for threads on this pedal and forgot I started this thread :roll:

Maybe it's a Zen? It seems to have a similar amount of components, and the three diodes...


a layout/schematic of this would be awesome. I'd probably get rid of the middle selector switch and set it to whatever the "down" position is...
Last edited by DjPsychic on 08 Nov 2020, 01:17, edited 1 time in total.

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Post by DjPsychic »

okgb wrote: 09 Jun 2020, 13:10 That arrangement looks closer to a zen drive , no? no buffers either ?
Would you say this is basically a Zen?

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Post by DjPsychic »

Anyone? :blackeye

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Post by DjPsychic »

Well that was disappointing

IMG_3872.JPG

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Intripped
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Post by Intripped »

have you bought the pedal?

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Post by DjPsychic »

Intripped wrote: 27 Sep 2021, 10:25 have you bought the pedal?
I've had it, just now decided to open up. Didn't realize I had a SMD version. Bummer..

I'm just going to assume it's a Z Drive and build a clone

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Post by Intripped »

well, we could try and trace it, anyway.
caps values will ramain uncertain, unless you dare, and desolder and measure them (or if we find other pics of the through-hole version, with visible values).

what's under the second PCB with the pots?
i can see what looks like a charge pump, in this SMD version, in the bottom-left corner of the bigger PCB

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Post by DjPsychic »

Intripped wrote: 27 Sep 2021, 13:36 well, we could try and trace it, anyway.
caps values will ramain uncertain, unless you dare, and desolder and measure them (or if we find other pics of the through-hole version, with visible values).

what's under the second PCB with the pots?
i can see what looks like a charge pump, in this SMD version, in the bottom-left corner of the bigger PCB
I just saw this response sorry! :slap:

I have since sold the DMBL and built a Z-Drive

If a non-SMD version comes up for sale I'll grab one and we can trace.

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Post by Intripped »

:thumbsup
ok, no prob & no hurry

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