In total, we have developed 9 kits to build a fully-featured modular monosynth: a sequencer, a VCO, a wavefolder, a noise/S&H module, a mixer, a VCF, an Envelope generator, a dual VCA, and an output stereo mixer with a headphone amplifier. Additionally, an affordable eurorack case with a DIY PSU will also be available. While these kits are easy to build, we did not compromise on design and functionality. We will launch one kit every 4-6 weeks. Each kit comes with an extensive user manual (40+ pages) that will dive deep into not only the electronics behind each circuit, but also the fundamental principles of sound synthesis. We hope that the mki x es.EDU project will inspire future engineers and will contribute to the ever-growing diversity of electronic music technology.
The first module - the VCO - is available now at Erica Synths shop and at DIY kit retailers.

Here's a video from Moritz on a VCO design:
Please, share your thoughts on a modules design and build experience here!