#675

Are you running it on a 9v? I find that it’s not as sensitive on battery power. I also find that I often have to readjust the knob under the white banana jacks to better control the antenna response and create a smooth stereo field.

#676

The problem started while I was using a 12v psu that seems like it should be fine- the same model works as expected with my Cocoquantus and is the incidentally the same one that comes packed with the Lorre Mill Keyed Mosstone, which has the same requirements as the C-L gear. I just tried a 9v on my porch to rule out outside interference.

Unfortunately, the fine antenna knob doesn’t seem to be doing much. The DH is still only sounding/lighting up when I actually touch it.

I read up thread that someone had climate-based problems with a DH in Thailand, but I’m in Chicago, which I imagine isn’t too different from Portland where Peter B is based. It’s just really weird that they all aren’t being effected and I’m a bit flummoxed.

Update edit for future reference: My Deerhorn just needed to be calibrated via the trim pots. Everything seems to be working now, though once I calibrated one, another went out of whack for whatever reason and needed to be calibrated too.

#677

i’m still waiting on a few parts to finish off the gerassic organ, dogvoice, and a conrad papers swoop and rando, but i got seven of the rollz-5 circuits wired together today and i am NOT disappointed with the outcome! these circuits alone are a chaos factory, i can’t wait to get everyone talking together.

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#678

Cool! I’m happy you found a fix. Thanks for updating the post.

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#679

Finally finished my version of the “poor man’s Rolzer”: Eight paper circuit Rollz PCBs in a guitar pedal case. The orange outs are taken from behind the 220K resistor where it seems that there is always a positive voltage, and even a positive pulse on the even rollz. That’s also what drives the LEDs. I found the MC Escher “Stars” sticker on Etsy and thought it to be very fitting (geometry!).

Just did a first test drive with this and the Plumbutter and I’m very happy with it, even with the oddness (!) of the odd rollz.

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I really like the guitar pedal form factor for these and I still have an unused case. Maybe I will try Phosphate of Aluminium Crystal Simulation + Ultrasound next.

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#680

That is super awesome!

The form factor is particularly slick too as it can slide up against the “real” instruments quite easily.

How did you “tune” the capacitors in the rollz?

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#681

Thanks!

On the left side there is only one value per roll: 22uF (3-Roll), 10uF (4-Roll), 4.7uF (5-Roll), and 3.3uF (6-Roll). For the right side rollz I randomly picked values between 0.1uF and 47 uF.

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#682

heres some dogvoice videos i posted today

with Swoop

with Rollz 6

with Anti-Rando

with Anti-preamp and Piezo

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#683

I’ve read that there is a problem with the swoop circuit, that it is unstable. Have you had any problems with it, or did you modify it?

Looks and sounds great! I have the idea that you could make an entire modular synth out of these paper circuits, with a bit of standardisation of the sizes of the pcbs.

I’m still working on DIY versions of the Rollz-5 circuits. I’ve built one 4 roll but have decided to switch from perfboard to stripboard as I got fed up making solder bridges. This means laying out the circuits again, but it’ll be worth it for ease of build.

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#684

No I haven’t, but I have been quite conservative with capacitors and resistors.- I’m using 104 for the hairy and 10k for the x resistor. Maybe will a different combination it could goto audio rate and cause problems, but not sure.

I have all these circuits for sale as a made a bunch of duplicate pcbs’s because the minimum order was 5. https://llllllll.co/t/fs-ww-ciat-lonbarde-paper-circuits-pcbs/23342?u=mlogger I am currently working on getting the solar sounders to PCB’s also. The Solar Sounders are a little bit more involved, as I had to redesign 3, from the paper circuit schematic to kicad as the Osmond files for those, are not available. I’ve finished 2 so far Mourning Dove and Guyto Monks but need to double check them before sending for PCB’s

I also finished the Esoterica Spikering PCB today. Here it is being pinging by Rollz6 and Rollz 5 using the Bandpass output. I did all the mods recommended by Richard Brewster (Pugix). http://pugix.com/synth/esoterica-spike-ring/

An extra mod for that the would be to insert a breakpoint between the pulse gen and the filter, so they could be used independently. Martin Freeman messaged on Facebook this photo for the place to do that. Lift the leg of the 104 cap that connects to CHAO resistor and wire a jack/switch there. Snipping the link between the two sections may cause that cybernetic loop in the chaos circuit to work differently than intended.

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#685

That looks amazing! Must build something like this myself.

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#687

Interconnected 6-Roll and 5-Roll boards… Need to get a 3 & 4 into the mix next :slight_smile:

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#688

Really impressed with the Blippoo’ness of the Esoterica Spikering with Rolls

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#689

The Rolls are great. I think Rolls should be the centre of any Ciat system and everything else built around them.

On a side note, i’ve been starting to look at the solar sounders. https://econtact.ca/18_3/blasser_solarsounder.html Those files are not available as Osmond. So I am currently working on transferring them in kicad. 2 done so far - Mourning Dove and Gyuto Monks. The Night Train one is not finished yet. I have sent the first 2 off to be made into PCB’s. Not sure they will work or not, but an interesting project in learning kicad anyway :slight_smile:

7 Likes
#690

how would you rate building some rollz-n as a project for baba’s first soldering day out?

#691

as someone who is in the process of doing just that, i’d say it’s a fine first project! the spacing isn’t bad, and after a couple circuits you get in a rhythm. the single-sided conrad papers circuits were tougher, but doable.

i guess i don’t know if i’m getting the exact optimal response from all of the circuits, but that’s kinda part of the charm?

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#692

I see you’re in Chicago too. if I end up ordering some PCBs from @mlogger here, would you be open to some sort of collective soldering craic? I’m pretty much solely interested in the rollz-n. I’d need to think about building enclosures for them too so I can affix banana jacks … I want them to interact w Serge!

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#693

Be careful! The rolls give out negative voltage from each pulse of around -8V. Can your Serge handle negative voltage?
To get a positive voltage you need to take an output from between the transistor collector and the hairy capacitor.
See Richard Brewster’s site as an excellent reference for the Rollz-5:

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#694

Good, the boards are fairly quick and easy to populate and the documentation is helpful… Be aware that the 1uf non-hairy electrolytic cap on 6-Roll is the wrong way round on the circuit diagram. I got this wrong to start with and it still worked :slight_smile:

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Some of the capacitor ratings Peter mentions in the text are on the slow side, I’ve been using 0.47uf through to around 22uf so far. YMMV of course.

Seems to get on fine with the Animal. I haven’t measured the voltage output on the nodes of the Rolls, you might want to check that as @barrford says…

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#695

I’m fairly certain yes—even if only going off of the ‘hot’ COUPLER output (-/+10V) of the SSG, which has worked fine w/o incident when patched to whatever else.

I still don’t even own a soldering kit yet so I’m quite a ways away, and all the wires and alligator clips look a bit daunting from here, but the results are fascinating—any of PB’s rollz designs have me fascinated, esp. given my interest in polytempi and modulation thereof— and I really need to get into DIY before it’s too late.

so sick. I hope you’re able to make some proper recordings of this asap!!

1 Like