[ORDER] Euclidean Circles - LEDs with rhythm

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[ORDER] Euclidean Circles - LEDs with rhythm

Post by av500 » Fri Dec 11, 2015 1:25 am

If you bought a v2 PCB set at Dutch Modular Fest, please contact me!

UPDATE 10: Euclidean Circles v2 replaces the original v1 also for DIY builds, see new guide below

PLEASE, if you email me, mention your MW nick, otherwise I have a hard time tracking who is who

see bottom of this post for prices

it's a panel! it's a PCB! it has rhythm! it's Euclidean Circles! - NOW VERSION 2

prototype PCBs finally came in, so here it my first *real* Eurorack module

it's a 3/6 channel 16 step Euclidean rhythm generator with an unique pattern visualization in 3U, 10hp Eurorack format. outputs 1-3 are the "on-beat" triggers and 4-6 are the "off-beat" trigger signals, all 5V. triggers 4-6 can also be used as a second set of 3 channels so 6 independent rhythm channels in total

the board and front panel is all SMT except for jacks and encoders - soldering the LEDs can be tricky, it's not a beginners SMT project.

The module runs from 5V only and depending on the adjustable LED brightness consumes between 60mA and 150mA. I run it at the lowest setting most of the time, at the highest level you attract passing alien space ships, so beware

see the linked video for a short demonstration of the basic features. on top of creating Euclidean Rhythms, the board is also a variable clock divider up to audio rates (tested up to 20kHz) and I'm working on more features like chaining and prescaling between 2 or 3 channels.

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Euclidean Circles:

DIY PCB set: €55 + €7 shipping
(comes with CPU soldered and programmed, including JP1/JP2 to connect the PCBs and 3 plastic washers for the encoders and the LED button!)
NOTE: soldering the LEDs can be tricky, it's not a beginners SMT project!

Fully built module: €265 + shipping



SixSwitches:

PCB + panel: €10 + €5 shipping

full kit: €35 + €7 shipping

Fully built: €50 + €7 shipping

payment via PayPal in Euro please, email me for orders, email address is vp (at) vpme (dot) de

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v1 Mouser cart: https://www.mouser.de/ProjectManager/Pr ... 99414397ee

v2 Mouser cart: https://www.mouser.de/ProjectManager/Pr ... 40aaf3e4fa

If you bought a v2 PCB set at Dutch Modular Fest, please contact me!
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Image

[video][/video]
[video][/video]
[video][/video]
[video][/video]

ImageImage

Euclidian Circles @ Modulargrid

BOMs and build guides:
(NOTE: in order to see the attached documents, you need to be logged in to muffwiggler.com - alterntatively these are avialable here: https://drive.google.com/drive/u/0/fold ... jJGTEtwOUU)

v2:
- EuclideanCircles_v2_BOM_and_Build_Guide_v2.0.pdf

v1.9a:
- EuclideanCircles_BOM_and_Build_Guide_v1.9a.pdf

v1.8:
- EuclideanCircles_BOM_and_Build_Guide_v1.8.pdf

v1.7:
- EuclideanCircles_BOM_v1.5.pdf
- EuclideanCircles_Build_Guide_v1.7.pdf

v1.5:
- EuclideanCircles_BOM_v1.5.pdf
- EuclideanCircles_Soldering_and_Assembly_v1.5.pdf

v1.2, v1.3, v1.4:
- EuclideanCircles_BOM_v1.3.pdf
- EuclideanCircles_Soldering_and_Wiring.pdf

SixSwitches:
- SixSwitches_build_guide_v1.0.pdf
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Last edited by av500 on Thu Nov 08, 2018 2:27 am, edited 48 times in total.

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Joe.
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Post by Joe. » Fri Dec 11, 2015 1:36 am

remove the 's' in 'https' in the video link.

I always hoped for something like this to be released with Dekatrons, but metasonix ruined all hope by explaining how unreliable they are :waah:

Great job implementing it :tu:
Last edited by Joe. on Fri Dec 11, 2015 1:40 am, edited 1 time in total.

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Post by av500 » Fri Dec 11, 2015 1:37 am

using the Euclidian Circles module as a clock divider at audio rates:

Image

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Post by emeb » Fri Dec 11, 2015 1:41 am

Amazing!

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Post by av500 » Fri Dec 11, 2015 1:54 am

LoFi Junglist wrote:remove the 's' in 'https' in the video link.

I always hoped for something like this to be released with Dekatrons, but metasonix ruined all hope by explaining how unreliable they are :waah:

Great job implementing it :tu:
thanks, fixed. Dekatrons are here on my desk, but no time yet :)

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Post by medbot » Fri Dec 11, 2015 2:01 am

emeb wrote:Amazing!
:agree:

That chip in the middle looks pretty scary. I've done ICs like the others, but I don't think I've tried anything that tight. I'd definitely be down to try though because that thing looks worth it just for the light show. Great sequencing options are just a bonus really.

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Post by PK808370 » Fri Dec 11, 2015 2:12 am

That's just fun to look at! I don't even like light shows on my modules, but I like this one. Oh, it also seems like it might be sonically useful :) not just a flashy dresser.
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Post by av500 » Fri Dec 11, 2015 2:13 am

medbot wrote:
emeb wrote:Amazing!
:agree:

That chip in the middle looks pretty scary. I've done ICs like the others, but I don't think I've tried anything that tight. I'd definitely be down to try though because that thing looks worth it just for the light show. Great sequencing options are just a bonus really.
20pin TSSOP, solders easily under the stereo microscope here :)

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Post by PK808370 » Fri Dec 11, 2015 2:15 am

medbot... you snuck in in front of me and stole all my thoughts... I must have been too mesmerized by the ... ooh circles :deadbanana:
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Post by limpmeat » Fri Dec 11, 2015 2:31 am

Looks cool, I'd be keen

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Post by mikecameron » Fri Dec 11, 2015 2:34 am

neat! I didn't see any mention of availability...
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Post by timpecter » Fri Dec 11, 2015 2:35 am

That looks super cool, really pretty, useful, and novel! I've done a bit of SMD but I think that's just too extreme for me to tackle. How do you solder the LEDs? Seems like it would be hard to reach the contacts with the iron without melting the plastic edges of the LED...

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Post by av500 » Fri Dec 11, 2015 2:36 am

mikecameron wrote:neat! I didn't see any mention of availability...
bear with me, this is the first time I think about making PCBs/modules available, so I need to find my way :)

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Post by av500 » Fri Dec 11, 2015 2:45 am

timpecter wrote:That looks super cool, really pretty, useful, and novel! I've done a bit of SMD but I think that's just too extreme for me to tackle. How do you solder the LEDs? Seems like it would be hard to reach the contacts with the iron without melting the plastic edges of the LED...
soldering the LEDs is not that hard for me, but then I have a stereo microscope that I can use :) I basically rotate the PCB after every two LEDs, so the iron is always in the same place when soldering and with a fine tip I can reach the contacts easily.

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Re: [IC] announcing: Euclidian Circles - LEDs with rhythm

Post by a773 » Fri Dec 11, 2015 3:41 am

av500 wrote:the module runs from 5V only and depending on the adjustable LED brightness consumes between 60mA and 600mA.
Looks really nice, although it seems to be a hungry little fella.

However it too small for me ATM, maybe someone could build one for me... What's the price and availability? Full kits or is there a BOM (or mouser card) available?

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Post by TimoRozendal » Fri Dec 11, 2015 3:56 am

wow, nice!

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Post by NS4W » Fri Dec 11, 2015 4:05 am

I'm interested! But I would need some assistance on that SMD....

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Post by geecen » Fri Dec 11, 2015 4:06 am

1:12 Finally, a Euro jump-step module 8-)

Seriously though, looks great.

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Post by Jarno » Fri Dec 11, 2015 4:45 am

Looks great!
It does seem a bit fragile though, does it feel that way too, or not too bad?

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Post by oootini » Fri Dec 11, 2015 4:55 am

looks really nice!

quick thought - flip the firmware to have only the active step lit on the leds? that would mean far less current consumption. just a thought...

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Post by gbiz » Fri Dec 11, 2015 5:45 am

Fantastic. SMD and blinkenlights. :goo:

Is that SMD power header up to taking repeated insertion/removal of the power cable, or a cable under strain in the cabinet ?. I appreciate using a PTH header would mean the pins show on the front & wouldn't look good. I ripped half the pads off a similar header that's used for the display board on Streams with nothing more than a accidental knock.

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Post by av500 » Fri Dec 11, 2015 5:46 am

oootini wrote:looks really nice!

quick thought - flip the firmware to have only the active step lit on the leds? that would mean far less current consumption. just a thought...
can add that to the firmware as a setting :) what's a digital module without settings after all! :bananaguitar:

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Post by av500 » Fri Dec 11, 2015 5:47 am

Jarno wrote:Looks great!
It does seem a bit fragile though, does it feel that way too, or not too bad?
it definitely feels "not too bad to me" :)

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Post by av500 » Fri Dec 11, 2015 5:49 am

gbiz wrote:Fantastic. SMD and blinkenlights. :goo:

Is that SMD power header up to taking repeated insertion/removal of the power cable, or a cable under strain in the cabinet ?. I appreciate using a PTH header would mean the pins show on the front & wouldn't look good. I ripped half the pads off a similar header that's used for the display board on Streams with nothing more than a accidental knock.
show me on the module where to put a 10/16 pin through hole header :)

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Post by av500 » Fri Dec 11, 2015 5:50 am

NS4W wrote:I'm interested! But I would need some assistance on that SMD....
I'm thinking of offering it "prebuilt" with the SMD soldered and you only mount the jacks and encoders. would that be an option?

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