#2250

im trying to understand how audio rate modulation works on the plumbutter. do the white jacks output AC cv? if so, do the cv inputs half wave rectify (cancel out the negative voltage) or full wave rectify (invert the negative voltage so its positive)? or do they just work with audio rate modulation, AC coupled?

im trying to understand the voltage standards and the precise ways these modules work with each other voltage wise, so that i can make a fully ciat-lonbarde-compatible modular system with bananas.

1 Like
#2251

update on the rolz.
Doubled it up and added in a pair of 2 rolz.

ROLzZ
ROLzZ1425×751 102 KB

I think i will run with this. :smiley:

11 Likes
#2252

love this design!! good luck, and good job sticking with the original shapes!

1 Like
#2253

Looks great! is there anything functionally different about these older rollz?

1 Like
#2254

Getting back into CL instruments after an extended leave (what was I thinking?). Here’s a krell patch on the buchla 208c with the pulse and inverted pulse triggering events on the plumbutter and rollz5. The 208c audio is processed through gongs as well.

3 Likes
#2255

Other than 2 LED channels per even roll and the additional 2-rolz in the middle - not really lol.
I have had like 7 people ask me to build something similar to Rolzer because Rolzer is pretty expensive for what it is…
Nothing at all against it - just cost vs functionality vs Peter’s other stuff, the Rolzer definitely falls short compared to the Coco and PB. (that’s an understatement lol)

2 columns rathen than the Rolzer’s 7 columns. (Mine is only about as big as an 8.5 x 11 sheet of paper)
So cap choices will be a big determining factor on how it performs.

I am considering working on a small case and selling them complete - rather than as just PCB’s. (PCB’s as well, of course)
But I’ll likely release some of the Gerbers (like i always do) - for people who want to case them themselves :slight_smile:

I’ve gotten a weird amount of people asking me to sell complete instruments.
While I love money… and love the idea…
The main reason I try to document and share as much as I can is within the full spirit of ciat-lonbarde DIY. :smiley: Do-It-Yourself.
I may build a couple for sale - but one of my passions is actually helping people work through their own builds :smiley: or teaching people certain things - etc.

(No - I am not a teacher lolol. but I probably missed a calling huh? lol)

12 Likes
#2256

I’ll be following this for sure, I fall squarely into the category of people who want a half(ish) rolzer.

I would be down with a completed build, but I did just get my feet wet with soldering so I wouldn’t be opposed to working up the courage for a DIY build too!

2 Likes
#2257

Rolls are one of the easiest circuits to make. Just follow the paper circuits or use the pugix site to see how they’re put together. You can always print out the paper circuits, build them and stick them in a box. We’ll support you! There are lots of DIY examples in this thread. HERE is the one I made on perfboard.

4 Likes
#2258

I love the mini-Rolzer idea, I built one on stripboard a year ago.
Do your design includes a positive pulse output per roll?
I put one on each Roll and love to use them to trig/ping non CL gear.

2 Likes
#2260

@sns Yeah! If you look closely each has a dc coupled roll
The pattern looks like this

image
image3264×2448 2.23 MB

3 Likes
#2261

this goes over the cv outputs of the plumbutter, and seems to be mostly correct aside from the orange rollz outs, but it says nothing about the ratings and conditions of the inputs. anyone have info on what the inputs expect?
#2262

Well, got the Plumbutter I ordered a few hours befoer they were taken down from Peter’s store and am having issues with the Deerhorn, which through some cursory forum searching, others have had troubles with.

Everything I am reading indicates that there should be two capacitors to potentially tweak with a screwdriver, but my deerhorn only has one at the top of the module. Every other picture of a Plumbutter I have seen also has one near the bottom. Was there a revision at some point along the way, or was something forgotten on mine?

image
image1174×880 330 KB

5 Likes
#2263

I should also ask, is it completely normal for one of the two oscillators to just be ringing all the time, or have a very, very long decay?

1 Like
#2264

one trimmer changes the decay, and another one changes pitch, at least on the first one. im not sure how the new design works, but id check patch point for an explanation.

edit: it’s here:

2 Likes
#2265

Yeah Peter updated the Deerhorns to only have one trimmer!

1 Like
#2266

Ahh, the Patch Point guide indicates that newer units only have one trimmer. Wouldn’t have thought to check Patch Point of all places for that info, but I guess it makes sense moving forward!

So now I guess the main questions is whether it is normal for one of the two oscillators to just keep ringing and ringing, and how far I can safely turn this trimmer without breaking it…

2 Likes
#2267

small screwdriver and turn it slowly. im not sure how you adjust the decay with just that one trimmer, but… idk

#2268

I am able to get it so both light up at 5-7 cm (per the instructions) but from there, the response just seems to be all over the place. And if I move away one of them will keep ringing. At other times, at the slightest gesture the amplitude between them inverts (so 90% of the time only one of the two oscillators is sounding).

Any more insights definitely appreciated. I emailed Peter as well, and will certainly update here with what I hear if it would be helpful for any one else.

I am no stranger to odd instruments (been loving the cocoquantus!) but it is a bit disappointing for something to arrive with questionable functionality (at this price point, anyway). Fingers crossed I can get it working!

1 Like
#2269

i think its working, most likely, but not just completely calibrated. im honestly not a fan of just having one trimmer. i think it makes more sense to have trimmer per function, but this definitely is faster

edit: heres an early design for the deerhorn organ to show how far it’s come:

image
image1200×630 185 KB

4 Likes
#2270

I’m pretty sure the response that you calibrated with the patch point directions is supposed to make it so one oscillator responds to the push in gesture and the second oscillator responds as the pull away gesture. At least that’s what I gathered from reading Peter’s site and with the response on my Deerhorn organ. You just calibrate it with both lights on to get that correct response.

1 Like