Euclidean Circles PCB

It's a panel! It's a PCB! It has rhythm! It's Euclidean Circles!

This is a PCB set (which is the panel), including presoldered and preflashed microcontroller suitable for the Eurorack format.

Note: These are now the v1.8 PCB sets

Availability: Out of stock

Notify me when this product is back in stock:



Euclidean Circles is 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 is all SMT except for jacks and encoders, so it's not your typical DIY - however, our kits have the microcontroller pre-soldered and pre-flashed.  The module runs from 5V only and depending on the adjustable LED brightness consumes between 60mA and 600mA. 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 below 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).


Note:  Be sure and use WS28182B - WS2812 wll not work.

Specs & Downloads

Specs & Downloads

HP 10
Depth No
+12V No
-12V No
+5V No
Additional Resources Build Guide - up to v1.7 Build Guide - v1.8


Customer Reviews (1)

AMAZING!Review by Casey Holmes
This module is out of this world. Extremely useful for many different things. The build was fairly easy and straight forward. Works fine on my uZues. You have to see this module in person to gain full appreciation. Once you get you hands on it you won't be able to stop! The functionality is as good as the aesthetics. By far the coolest module I have had my hands on yet.
(Posted on 11/2/2016)

Write Your Own Review

You're reviewing: Euclidean Circles PCB



Use spaces to separate tags. Use single quotes (') for phrases.