Master clock Module

Eurorack Master Clock with Transport Controls

Precise master clock and transport controller for Eurorack systems.
Designed for reliable synchronization of sequencers, drum modules, samplers and external gear with intuitive PLAY / STOP / HOME workflow.

The module generates multiple simultaneously available clock divisions (1/1, 1/2, 1/4, 1/8, 1/16) and dedicated transport trigger outputs for STOP and RESET/HOME synchronization.

Unlike standard clock generators, the transport section is optimized for live performance:

First press of STOP pauses the clock
Second press sends HOME/RESET pulse and returns connected sequencers to step 1
PLAY starts the transport again from the current or reset position

Holding the STOP button while simultaneously pressing the encoder button saves the currently selected BPM value.
The save operation is confirmed by a blink of the green SAVE LED.
After powering the module off and on again, the saved BPM value is automatically restored.

This behavior allows comfortable jam-oriented workflow similar to classic drum machines and hardware sequencers.

Features
Stable master clock generator
Simultaneous divided clock outputs: 1/1 1/2 1/4 1/8 1/16

Dedicated STOP output
Dedicated RESET/HOME trigger output
PLAY button
STOP/HOME button with dual-function behavior
Designed for live performance and synchronized modular systems
Immediate synchronization of connected sequencers and clocked modules
Typical use cases
Master clock source for entire Eurorack system
Synchronization of multiple sequencers
Starting/stopping external clocked devices
Live techno / experimental performance workflow

Tempo range: 30–300 BPM
Tempo control: rotary encoder
Press & turn: 10 BPM step increments
Clock pulse width: 5 ms
STOP/HOME pulse width: 10 ms
Output level: 5 V

Width: 8HP
Depth: 22 mm behind panel (excluding connected power cable)
Power supply: +12V

The module is completely assembled. Ready for use!

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