NLC Triple Sloth

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gelabs
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Re: NLC Triple Sloth

Post by gelabs » Wed Feb 19, 2020 12:49 am

gnsk wrote:
Wed Feb 19, 2020 12:35 am
Triple Sloth, made with point-to-point
...
Awesome build ! :goo:
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andrewF
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Re: NLC Triple Sloth

Post by andrewF » Wed Feb 19, 2020 1:01 am

gnsk wrote:
Wed Feb 19, 2020 12:35 am
Triple Sloth, made with point-to-point
6hp repack
added cv-in attenuator.

THANK YOU! andrewF
Crikey!!! You are welcome :hail:

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Re: NLC Triple Sloth

Post by BlinkyLights » Wed Feb 19, 2020 2:33 am

gnsk wrote:
Wed Feb 19, 2020 12:35 am
Triple Sloth, made with point-to-point
6hp repack
added cv-in attenuator.

THANK YOU! andrewF
sloth-f.jpg
sloth-h.jpg
Freaking awesome.

harry_manback
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Re: NLC Triple Sloth

Post by harry_manback » Fri Mar 06, 2020 11:44 am

If anyone can shed some light on this issue I'm having, it would be greatly appreciated. I built two triple sloths, both seem to be working fine other than the fact that the inertia light never turns green. This is occurring on both builds. Am I just not waiting long enough or is this expected behavior for it to hang there for REALLY long times? The inertia light will fade from red to nothing, but always goes back to red. I've let them run for over an hour. I know it "does what it wants" but I was wondering if this is an error on my part with the builds? Thanks in advance for any thoughts!
Last edited by harry_manback on Fri Mar 06, 2020 12:51 pm, edited 1 time in total.

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Agawell
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Re: NLC Triple Sloth

Post by Agawell » Fri Mar 06, 2020 11:49 am

I'd really leave them on for longer - inertia can really just get stuck in the same state for a long time
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Re: NLC Triple Sloth

Post by harry_manback » Fri Mar 06, 2020 2:20 pm

Agawell wrote:
Fri Mar 06, 2020 11:49 am
I'd really leave them on for longer - inertia can really just get stuck in the same state for a long time
Thank you for the advice. I’ve left them both for 2 hrs and, although it will change from bright red to essentially off, I’ve yet to see green. Again, not sure if this is normal behavior and I just need to be more patient

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Agawell
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Re: NLC Triple Sloth

Post by Agawell » Fri Mar 06, 2020 2:33 pm

hahaha
yeah they say patience is a virtue...
more patience needed
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an oscillator is an oscillator - utilities are possibilities

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Re: NLC Triple Sloth

Post by harry_manback » Fri Mar 06, 2020 2:52 pm

Agawell wrote:
Fri Mar 06, 2020 2:33 pm
hahaha
yeah they say patience is a virtue...
more patience needed
Thanks! Its not making the module less awesome, I just want to see the green to know I didn't make some kind of mistake in the circuit.

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Agawell
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Re: NLC Triple Sloth

Post by Agawell » Fri Mar 06, 2020 2:59 pm

I understand I was the same...
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Utility modules are the inexpensive, dull polish that makes the expensive, shiny modules actually shine!!!

an oscillator is an oscillator - utilities are possibilities

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Phitar
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Re: NLC Triple Sloth

Post by Phitar » Sat Mar 07, 2020 3:03 pm

harry_manback wrote:
Fri Mar 06, 2020 2:52 pm
Agawell wrote:
Fri Mar 06, 2020 2:33 pm
hahaha
yeah they say patience is a virtue...
more patience needed
Thanks! Its not making the module less awesome, I just want to see the green to know I didn't make some kind of mistake in the circuit.
Oh.BTW Once it does turn green it will be that way for a long, long time. Maybe even as long as it took it to turn green in the first place... :hyper:
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andrewF
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Re: NLC Triple Sloth

Post by andrewF » Sun Mar 08, 2020 9:50 am

Sometimes R7 needs to be changed to get a more balanced chaos. Some builds will sit in one chaotic well for several hours, flip over to the other side for a quick orbit then back to the original well for another few hours.
I like ones that spend a roughly equal amount of time in each well, so adjust R7 to suit. Around 220k is a good value to start with but anything from 150k to 330k will make it go.

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Re: NLC Triple Sloth

Post by kpreid » Sun Mar 08, 2020 1:08 pm

Got any advice for an 8HP Triple Sloth Inertia section that isn't really oscillating at all?
X = -10.5 V
Y = +0.8 V
Z = -2.8 V

On power-up it moves over a couple minutes to this position and stays there. The Y and Z fluctuate by less than a volt but the X stays where it is — I've watched it for hours and never seen X go positive.

I didn't build this module; I've inspected the PCB and tested a few passives and did not find any obvious errors, but I also don't currently have a meter that can measure over 1MΩ.

EDIT: … whoops, it just made a liar of me, as X has gone to -5 volts and increasing. That's the most life out of it I've seen in any test. Fun! It hasn't exhibited much range on Y/Z, but clearly it' s not as dead as I thought. Either that or I misremember and it was getting stuck on +X and not -X.

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Re: NLC Triple Sloth

Post by kpreid » Sun Mar 08, 2020 4:45 pm

Okay, now I left it on longer and things fit with my previous observations better. It initially went to X=-10 V but has now gotten to +11 (X=+11, Y=+2.0, Z=-3.4), but not done any more interesting things on an XY plot after that. Z wanders enough to make an audible pitch drift, but it's not using very much of the available voltage range at all and neither X nor Y is doing anything noticeable.

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andrewF
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Re: NLC Triple Sloth

Post by andrewF » Sun Mar 08, 2020 6:44 pm

Check the pins on the op amp, one may be lifted

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Re: NLC Triple Sloth

Post by kpreid » Sun Mar 08, 2020 8:37 pm

andrewF wrote:
Sun Mar 08, 2020 6:44 pm
Check the pins on the op amp, one may be lifted
They all look properly soldered but I'll take that as a starting point when I get around to more detailed troubleshooting. Thanks!

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andrewF
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Re: NLC Triple Sloth

Post by andrewF » Mon Mar 09, 2020 1:34 am

No worries, pm me some clear hi-rez pics if you like, happy to have a squiz

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Zerstorte Zelle
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Re: NLC Triple Sloth

Post by Zerstorte Zelle » Tue May 12, 2020 4:29 pm

gnsk wrote:
Wed Feb 19, 2020 12:35 am
Triple Sloth, made with point-to-point
great build!

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JES
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Re: NLC Triple Sloth

Post by JES » Tue May 12, 2020 4:42 pm

❤️ this module.
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scragz
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Re: NLC Triple Sloth

Post by scragz » Tue May 12, 2020 4:56 pm

Yeah I just got mine yesterday and already love it. It's so great for attenuating and putting on filter cutoff or FM amount to keep a loop evolving.

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mhtones
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Re: NLC Triple Sloth

Post by mhtones » Wed May 13, 2020 1:28 pm

Point to point build

Woah :woah: :hail:
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Naenyn
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Re: NLC Triple Sloth

Post by Naenyn » Wed May 13, 2020 2:21 pm

On a side note.. I have a couple 1U sloths and they’re a lot of fun to watch on an XY scope.
-n :ninja:

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Re: NLC Triple Sloth

Post by Elahrairah » Thu Aug 27, 2020 10:02 am

About the LED problems. I'm using a Tayda A-1050 , which they call a bi-color red/green (btw there's no search results for bipolar LED, gotta be bi-color with them). Thought I'd measure the volts required to light each way as an excuse that we may see biased results. I've found (with a 680R) that the green side takes a quarter volt more than the red to get visible. So where +2V is required to light the red, -2.25V is required for the green.

This would make a sine wave appear biased pretty significantly.

My voltmeter isn't perfectly calibrated, but this tidbit might be useful for people having perceived issues with the Sloths LED.

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Re: NLC Triple Sloth

Post by Elahrairah » Thu Aug 27, 2020 12:08 pm

Great news! The wrong pots fit just fine. I have these and it sits right in there. https://www.taydaelectronics.com/potent ... meter.html
Photo of NLC triple Sloths with wrong parts
Photo of NLC triple Sloths with wrong parts

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Re: NLC Triple Sloth

Post by blaythe.steuer » Sat Aug 29, 2020 1:03 pm

i have the 1U sloth and its really fun! I just plug it in to stuff and it makes it cool and it requires minimal use of my brain and i like that shit

Ultrabluetech
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Re: NLC Triple Sloth

Post by Ultrabluetech » Sun Sep 20, 2020 1:35 pm

How is triple compared to dk?

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