#839

Awww yeah! That’s so cool! Good job.

1 Like
#840

I have been curious about building one of these, but my soldering skills aren’t the best. How was it?

#841

I’d say go for it! It was a bit long to do but nothing complicated, as always when you have lots of components on the panel the wiring is the worst part. The only mistakes I made were when trying to work too fast, take your time.
I’d suggest to start by just building one even rolls, add the pulse out and led if you want and check that it works correctly.
Then take some time to plan your layout, all rolls are made of exactly the same components so you can just duplicate things on the entire board and connect the rolls between them after depending on which ones you want (I made 2/3/4/5/6 rolls x2).
When I built mine I placed and soldered all components value by value for the entire board: all the 22k resistors for all rolls, then all other values resistors, then all the transistors etc. This way you don’t make mistakes as you always connect the component you’re working on the same way on the entire board.
I would suggest not to bother with headers and directly solder capacitors which make it simpler to do too. :slight_smile:

2 Likes
#842

Hmm, I’m kinda interested in building something like the mini-rollzer that @corpusjonsey built. I’m curious about the function of the rolzer. Does it output sound, or is it strictly a trigger generator? Would it be something that would play well with a benjolin? Thanks for the help.

1 Like
#843

Awesome! Great work! And it looks so much neater on the inside than mine. :sweat_smile:

1 Like
#844

It’s most commonly thought of as a trigger source. You can listen to it if you like clicks. The odd rolls have a chaotic behavior (see Peter’s website for description) that can be used for triggering/ mixing with other rolls etc., you can get interesting sounds with them going into the ultrasounds on the PB/rollz5.

1 Like
#845

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Made this one up as a paper circuit, just out of pure curiosity (taken from this text)

https://docs.google.com/document/d/1p48Eyz4mqKHOlezxN-Xp6X_FTNSl6ihB042zZX5pGYI/pub

It’s not clear where a power source should be added so using it here purely as a passive “zombie board” between two Rollz:

It’s doing something, possibly no more or less than any old dead circuit board would but interesting… Will have a look at powering it up next.

4 Likes
#846

Trying to find the source of this. Hoping to find help here maybe…

I am trying to think of a CL-dedicated mixer-thing. Maybe with built in compressor and effect loops for Cocoquantus to go in parallell with Plumbutter and unprocessed.

images

#847

That’s custom built by http://verdeaudio.com/ in Finland, you could mail and ask the specifics of that particular unit from them?

2 Likes
#848

Thank you kindly! …

#850

would anyone be able to advise me on which of PB’s designs i should try to diy as an absolute novice to building?

2 Likes
#851

The Lil Sidrassi is the one most people first. It’s a complete noise synth, though.
Also, building a couple of rolls (a 3 and 4) and the ultrasound filter from Rollz-5 are quite easy. You could then build the other Rollz circuits.

1 Like
#852

I built the Gerassic. Fairly easy and with a very musical result (not noisy).

2 Likes
#853

Got an original PB rollZ5 circuit and double deerhorn in a falling-apart-case, both the case and circuit broke in the first 10 min of use.

Gustavo at Noisebridge, SF, fixed me up with an entirely new case and a bunch of diode protection here and there for cross patching and not having to worry about stray alligator clips.

The shit is wild!!

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21 Likes
#854

Finished my build of the Phosphate of Aluminum Crystal Simulation with Ultrasound filters this weekend.

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It’s played with the keys on the right. The grey patch points on the left are outputs for each key and can be patched to the violet inputs at the top for permanently connecting them to the star input on the PACS PCB. They can also be patched to the two Ultrasound filters (green = input, white = output) on the right. The white output at the top in the middle is the audio output of the PACS, the green input in the middle goes to a 3.5mm line out on the back.

The gain control pot for the PACS audio out controls the gain of the LM386 amplifier on the PACS board, the gain pots (50k) for the ultrasounds are used as variable resistors in place of the 22k resistor on the ultrasound PCBs.

For the keys I made a PCB in Osmond which can hold Cherry MX switches. I will open-source this PCB once I’m completely happy with it.

The artwork is Magritte’s “Man with a Bowler Hat”, bought as a sticker on Etsy.

Here’s some audio:
Dry sound:

And it gets really wild with Bastl Thyme in stereo!

31 Likes
#855

found this, probably relevant here https://reverb.com/item/28386645-ellitone-ultrarollz-farm-detective-black-version

2 Likes
#856

I sold a few modules and I bought one of these. I won’t be certain till it arrives, but I suspect it’ll suit my setup very well. Can’t wait!

#857

Power question: Peter suggests a 12v power supply with a “tip positive, 2.1mm barrel”.

I thought barrel supplies were either center positive / sleeve neg or center negative / sleeve positive.

Any idea what he means here?

#858

@Loitering: Center positive, sleeve negative.

2 Likes
#859

Banana noob questions:

When using 2 devices together (ie plumbutter and cocoquantus) do you need to connect them via the banana ground jacks?

If you’re going to introduce a 3rd device into the mix (in my case a format jumbler) should you just tap off one of the ciat lonbarde ground jacks via a stacked banana cable?