Microclock - Modular Synthesizer Module With Arudino

Photo of intechstudio

Made by intechstudio / Art / Music

About the project

Arduino Micro based clock source module in the eurorack format. Built with Otto's DIY ecosystem.

Project info

Difficulty: Moderate

Platforms: Arduino

Estimated time: 3 hours

License: GNU General Public License, version 3 or later (GPL3+)

Items used in this project

Hardware components

Otto's DIY kit Otto's DIY kit Stripboard-480 + PowerBrick x 1
3.5mm mono (TS) sockets 3.5mm mono (TS) sockets x 8
10kOhm  Potentiometer 10kOhm Potentiometer x 2
Resistors 470R Resistors 470R x 8

Hand tools and fabrication machines

Drill Drill Handheld drill is fine! x 1
Round file Round file x 1
Screw driver Screw driver x 1


Otto's DIY is a prototyping environment for eurorack enthusiasts and module makers, now live on indiegogo. The project is a great choice of both novice and expert builders. We strongly believe that everything should be in the eurorack mechanical and electrical format. So if you have been eyeing the idea of synthesizer building, this project may help you on your journey.

This project is a "proof of concept" demonstration, how Otto's DIY ecosystem works. Had an Arduino laying around in the office and needed a clock source module. The clock drives the "Oktogon" sequencer module, which is patched up with an oscillator to make bleeps and blops.

We have made a build video, how the project is assembled.

We have already uploaded the schematics for this build to the intechstudio GitHub, also the code will be online in the near future.

The Otto's DIY eurorack user group is open for anyone interested in eurorack synth building, the Otto's DIY community is growing! Don't hesitate, come and join us to discuss synth diy related topics.

If you have any questions, feel free to reach out to us at support at intech.studio or any of our social media pages.

For more info about the Otto's DIY stuff, visit the indiegogo campaign.

Enjoy your DIY time whatever your project will be,

- Kristof from Intech Studio

Schematics, diagrams and documents

MicroClock schematics



Code available soon, schematics is online in .pdf format.


Photo of intechstudio


Here to share a cool modular synthesizer project in the eurorack format.


Leave your feedback...