What has this all to do with modular synthesisers ? I bought a Stoicheia DIY-module by Rebel Technology (http://www.rebeltech.org/products/stoicheia/) from Thonk (https://www.thonk.co.uk/shop/rebel-technology-full-diy-kits/). Stoicheia is a dual Euclidean Sequencer that has the Euclidean algorithm programmed in it's Arduino ATMega168 CPU.
You can generate all the max. 16 step length Euclidean sequences with just three control knobs:
1. Starting beat of the sequence that can be rotated left or right
2. The length of the sequence 1-16
3. The number of on-beats from 1 to length of the sequence