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POLYKIT SYNTH DIY
POLYKIT

POLYKIT

DIY Synthesizers from Berlin

Build your own modular synthesizer

POLYKIT offers DIY Eurorack module PCBs, kits, and open-source synth projects designed for makers of all skill levels. From oscillators to power supplies, everything is crafted to be reliable, easy to assemble, and fun to explore.

Keep on tinkering

Latest Modules

Quantize & Hold

Quantize & Hold

This Arduino based module let’s you quantize and hold a given control voltage. There are controls for selecting different scales and transposing a note. The module can either …
Clock Divider

Clock Divider

This clock divider is built around the CD4024 CMOS 7-stage binary counter. It divides an incoming clock signal by powers of two, providing six simultaneous outputs. It’s a compact …
Chainable Arduino Sequencer

Chainable Arduino Sequencer

The Eurorack Sequencer is a straightforward, flexible 8-step sequencer designed around the Arduino Nano. It offers a hands-on approach to pattern creation with plenty of CV control …

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Quantize & Hold

Quantize & Hold

This Arduino based module let’s you quantize and hold a given control voltage. There are controls for selecting different scales and transposing a note. The module can either …
Clock Divider

Clock Divider

This clock divider is built around the CD4024 CMOS 7-stage binary counter. It divides an incoming clock signal by powers of two, providing six simultaneous outputs. It’s a compact …
Chainable Arduino Sequencer

Chainable Arduino Sequencer

The Eurorack Sequencer is a straightforward, flexible 8-step sequencer designed around the Arduino Nano. It offers a hands-on approach to pattern creation with plenty of CV control …
Eurorack Spring Reverb Driver

Eurorack Spring Reverb Driver

This spring reverb module is part of my Eurorack series. It drives a reverb tank and has two inputs, control for dry/wet to blend between original and processed signal, and a …
Ring Modulator

Ring Modulator

This Eurorack ring modulator allows the multiplication/amplitude modulation of two signals. There are two center-tapped mini transformers and a ring of four diodes, which form this …
Eurorack Output Module

Eurorack Output Module

The Eurorack output module gives you a versatile option to either connect your modular to a mixer or amplifier, or to drive some headphones with it. There are controls to attenuate …
Eurorack 12V AC Power Inlet

Eurorack 12V AC Power Inlet

This module lets you safely and neatly bring 12V AC power into your modular case. It features a barrel jack connector, an on/off switch, and a power status LED, making it easy to …