#594

@yoyosandshoes Yes, I posted lots of videos on my Instagram and there’s a few I put up on YouTube of the circuits individually - just not all at the same time in one box https://www.youtube.com/user/mlogger and www.instagram.com/mlogger .I’ve not posted the box demos yet as I am adding more circuits and a better power distro board.

I am actually liking these individual paper circuits more than Rollz 5 because you have more options to adjust stuff to your taste and you can volume match the outputs or have individual outputs. They are rawer and more clicky and unpredicatable. The ultrasounds have a lot more character and range.

The Dogvoice especially is as good as anything in the Ciat Lonbarde line and surprised this is not commercially available - it’s 2 oscillators (1 fixed, 1 variable and 2 ladder filters - which self oscillate and sound like Ultrasounds) and there’s a wide variety of sound you can get from it. It’s playable (with Piezos) and not uncontrollably chaotic and works really well with Rollz and audio rate modulation from Swoops. There isn’t a big need for AVdogs because of it. I have actually put another order in for double sided PCB’s (with the corrected solder pads on the reverse) - more Dogvoice / Rollz and Ultrasound.

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#595

@yoyosandshoes @glia

I have updated the paper circuits PCB procedure to make the PCB’s - double layer with solder pads on the top/bottom.

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#596

@mlogger thanks for sharing and I had seen this post up thread. Whilst I’d love to do this, life won’t let me for the foreseeable future. But building my own PB instrument like your wooden box above is a definitely the dream.

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#597

Just spotted this on Peter’s IG:

> “First quatrax shipped today”

As ever, they look magnificent!

Anybody here got one on order?

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#598
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#599

I stumbled across this thread (and forum) while looking for info on DIY Ciat-Lonbarde circuits.

I’m currently making a Lil-Sidrassi that is patchable and some of the oscillators are tuneable: I’ve done some modelling of the circuit in LTSpice, and for bass, treble and ultrasound cap-values, if you replace the 1Meg resistor to ground with a 1Meg potentiometer in variable resistor guise, then you can tune the oscillator frequency. I’m breadboarding to check, but I haven’t done any electronics for 25 years so it’s going a bit slow. :slight_smile:

@mlogger your instagram is very inspiring. Did you get the Deerhorn circuit to work? This is the one I’m most interested in building next as I’m very interested in gestural control of synths. However, I haven’t seen a completed deerhorn paper circuit on youtube, instagram, etc.

On the master legend above, I think the circle with three connections and a smaller circle with slot in the middle might be a tuneable capacitor of the type:

In the Osmond PCB file for the various Deerhorns, there is a part in the library called “rrrcaptrim” that has this symbol.

Anyway, loving this thread!

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#600

No i didn’t :frowning: I emailed Peter about those particular symbols as I was attempting to do the Deerhorn and he said those parts were good (adjustable antenna/variable inductor), but I could never find anything that resembled anything I had seen in photos of a Deerhorn build and I couldn’t get that particular section to work when I built it. When I removed the choke inductors, the pcb worked fine as an FM synth but the photo resistor parts didn’t work. So that is maybe the missing piece, but there would be no radio antenna to pick up signals? so not 100% sure. Interesting about that name in Osmond though and it looks very similar to the schematic on the board. The Deerhorn circuit was the one I always thought I would have trouble with, as there is so little info about it, that’s why I emailed him, but I still couldn’t get it to work. I stopped that build and built all the other circuits instead. I have 3 different types of Deerhorn PCB’s. I may try the other simpler ones.

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#601

Thanks for replying. It’s a shame you didn’t get it to work.

I think the antennae attaches to the really big star on the right hand side of the circuit.
On the deerhorn_prov circuit (the first version of the deerhorn, I believe) each of the sections are labelled, and the section on the right, with the really big star, is labelled “antennae oscillator”.
These are just my musings from studying the circuits in Osmond. You have much more practical experience of them! :slight_smile:

#602

I think I may try the earlier versions as they seem simpler. I know the Deerhorn was based on the radio zither which is also in same zip folder. I have a Plumbutter mk1 that I’ll open up also and have a look at the board

#603

I owned a Plumbutter from 2016-2017, and I’d be lying if I said I wasn’t currently thinking of selling off my euro and venturing back into Ciat land. I really miss it. I miss the focus. I miss the accidents. I miss the chaos. I have a semi-functional Cocoquantus lying in a drawer at home (which I fully intend to fix soon!), and my current idea is to spring for a Plumbrolzer – there’s no sound I love more than a rolz tangled with ultrasound.

I’m curious if some of you here have first-hand experience with the Plumbrolzer specifically. Do you find that the PB is sufficiently capable of processing/interacting with the Rolzer side?

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#604


I finally got around to recording some new music
cocoquantus, plumbutter, OP1, continuumini

after a long time with the CL instruments turned off it is good to know that it all comes back

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#605

Finally got round to getting a Rollz PCB. I had built Rev3 I got in a trade here previously and sold it to fund a PB and kind of missed it but really wanted to learn how to do the build myself.

I’m finding sourcing the parts pretty daunting as I’ve only done some simple full kits in preparation, for example searching TL074 on Mouser brings up a number of options, which one do I pick?

If anyone can help the ensuing questions that would really helpful. Also is this the appropriate thread for posting DIY stuff?

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#606

I like to use https://www.taydaelectronics.com/ for projects like that. Limits searching and lower order minimum, but takes a bit longer to arrive.

#607

Thanks :+1: I looked on Tayda briefly previously, I’ll see if I can figure things out any better on there.

Are some components better quality than others?

#608

Not sure if you plan on using the bare brass banana jacks that originally came with the PCB but here are the front and back panels I used. I did a bamboo on the back and clear acrylic on the front, but they have a variety of materials:

corpusjonsey’s showroom

#609

I would like to build a “poor man’s” Rolzer from the 3- to 6-Rolls paper circuits. Would these be safe to use with Plumbutter and Cocoquantus? Would I need to connect ground when using the paper circuit Rolls with PB and CQ?

#610

Yes and yes 20 characters.

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#611

Great, thanks! @corpusjonsey

Also thanks again, @mlogger, for the paper circuit PCB instructions! I just ordered some Rolls PCBs.

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#612

SThanks, tbh if I manage to make any part work I’ll be well pleased.

Question: for the non electrolytic capacitors, are Poly better than ceramic or will both work?

I got some of these for the 102, 103 and 104 (this has pretty thick legs which need a bit of persuasion to get into the pcb holes)

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#613

They’ll work. 20 chars of yes.

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