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Plumbutter Ultrasound Filter audio in mod

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bibleblack
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Plumbutter Ultrasound Filter audio in mod

Post by bibleblack » Mon Apr 12, 2021 8:37 am

So I have a Plumbutter 1 and was looking at the PCB and on the Ultrasound filter section there are pads for audio in, has anyone ever hooked them up?

Would be a Super simple mod and just need 2 holes drilling on the front panel.

Any reason other than destroying it for not doing it?

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d42kn355
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Re: Plumbutter Ultrasound Filter audio in mod

Post by d42kn355 » Mon Apr 12, 2021 10:16 am

Could you take some pics of the PCB ^_^ and Im curious where those pads would be in relation to a PB2. lol

bibleblack
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Re: Plumbutter Ultrasound Filter audio in mod

Post by bibleblack » Mon Apr 12, 2021 5:12 pm

So 3 pictures 1 is the deerhorn section or reference the other 2 show the upper and lower ultrasound section.

The square hairy box is the audio in symbol and is where the gongs, av dogs and deerhorn input jacks all connect to. On what I'm pretty sure is the ultrasound section (where the ultrasound nanana sockets connect) there are the same pad but no audio in socket is connected.

I was wondering why peter left this out as there's space in the rent panel on plumbutter 1 or 2 more jack sockets and having built the paper ultrasound circuits I really like sending audio through them.

I can take more photos of the pcb if you like with out the perspex. Just need a little more time to take it off when the house is quieter.
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d42kn355
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Re: Plumbutter Ultrasound Filter audio in mod

Post by d42kn355 » Mon Apr 12, 2021 8:40 pm

What I would do - is pull off the back and wire a node to it temporarily and see what happens. lol

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d42kn355
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Re: Plumbutter Ultrasound Filter audio in mod

Post by d42kn355 » Mon Apr 12, 2021 8:45 pm


Here is a pic I took of one I repaired.
Sections are super similar but the silk and extra pad are missing. (PB2)

If you DO end up pulling off the back - clearer pics would be lovely - would love to know where the trace is going lol.

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d42kn355
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Re: Plumbutter Ultrasound Filter audio in mod

Post by d42kn355 » Sun Nov 21, 2021 10:40 am

So I made up a schem for the USF from the PB1 -
I believe that node is indeed Auxillary Input -
I would pull off the back, run a wire from there, and run a wire from ground and connect a 1/4" jack - then give it a test!!
I made up some USF +'s based on my schematic and the Aux in works great!
Image


Here was me testing the Aux.


Running a YT vid of Peter (Gonzo Circuits video) into it :D

bibleblack
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Re: Plumbutter Ultrasound Filter audio in mod

Post by bibleblack » Mon Nov 22, 2021 10:27 am

d42kn355 wrote:
Sun Nov 21, 2021 10:40 am
So I made up a schem for the USF from the PB1 -
I believe that node is indeed Auxillary Input -
I would pull off the back, run a wire from there, and run a wire from ground and connect a 1/4" jack - then give it a test!!
I made up some USF +'s based on my schematic and the Aux in works great!
Image


Here was me testing the Aux.


Running a YT vid of Peter (Gonzo Circuits video) into it :D
This is great I need to get round to doing this thanks josh

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