Latest Posts

Taking apart the MFB Nanozwerg

Marv's Blog by marv - March 2, 2026

The MFB Nanozwerg is a small Synthesizer from Berlin. Nobody talks about it and it's often overlooked but you can get a really wide range of sounds out of it. I've been using it for acid lines and even thicker sounds thanks to its pulse width modulation. Its MIDI implementation …

net.acid: acid and voice sequencer for the web and your midi synth

8x10 by marv - February 26, 2026

there is a distinct lack of sequencers on synthesizers that don't have a sequencer.

if you have something like a 303 that accepts midi and interprets everything above 100 as an accented note, look no further

link to the web app: net.acid

as a bonus, there are controls for the bassboy+ synth by beatnic.jp enter text in the voice fields to sequence a voice synth that follows the pitch

PCBs with your 3D printer at home

800DV: Diy Venture by marv - February 14, 2026

Quick links: P3B editor | Blender


It's so easy and fast to print circuit boards using one of the well known factories. I could just upload my files and have it printed in a matter of days. However, I'm not in this project for easy and fast, but I'm also impatient. It's a weird space where I feel like printing a circuit board at home and spending hours preparing it gets me there faster.

To be honest, it makes little sense in this case but I feel drawn to making everything at home. So I looked into …

Retracing the PCBs

800DV: Diy Venture by marv - February 3, 2026

It feels like I'm starting all over again but it's for the best. Before last week, all I had access to were low resolution photos of the circuit boards and the circuit diagram of the synth.

My previous reverse-engineering attempt in KiCad based on low-res photos