Otto’s DIY is a prototyping ecosystem for Eurorack style synthesizer modules. The project offers prototyping PCB panels, component kits and design documentation for different projects. All of the designs are free and open-source available in the Otto’s DIY Repository.

Eurorack power supply module

8 step analog sequencer module

The user contributed projects are showcased on the Intech Studio website and discussed in the Otto’s DIY Facebook Group.

I particularly enjoyed working on the project because it brings the synth DIY closer to each other. Writing the Otto’s DIY Coockbook was also a lot of fun. As of now we have released Vol. 1 The basics of analog design which explains the inner workings of an Voltage Controlled Oscillator circuit through an easy to follow example.