Music Thing Modular - Turing Machine mk2
Product number:
100211
Product information "Music Thing Modular - Turing Machine mk2"
- The Turing Machine is a binary sequencer based on a 16-bit shift register. Instead of precise programming, you steer its output.
- You can’t save or recall sequences—once changed, they’re gone.
- It generates clocked, stepped random control voltages (melodies, basslines, sequences) that can loop based on the length control.
- Since 2012, it’s been a popular Eurorack DIY project. Check #turingmachine on Instagram for demos.
- DivKid's 27-minute video explains it all, and here’s a 20-minute talk on its design.
- Sound on Sound Magazine published a nice review.
- Expanders connect to the module and modify sequences:
• Volts: Extra voltage output controlled by five pots.
• Pulses: Converts sequences into beats with 11 rhythmic outputs.
• Voltages: Adds two CV outputs controlled by 8 faders.
• Vactrol Mix: A matrix mixer for rhythmic audio cutting and panning. - Looping is controlled by the big knob:
• Noon = Random sequences.
• 5 o’clock = Locked repeating sequence.
• 7 o’clock = Double-length loop.
• 3 or 9 o’clock = Loops with occasional changes. - A free, virtual version exists in VCV Rack.
- Inspired by classic shift register synth circuits (Triadex Muse, Buchla 266, Noisering).
- Musically, it draws from 60s/70s minimalist composers like Steve Reich and Terry Riley.
- A Random Reading List covers its historical influences, from Marvin Minsky to Don Buchla.
- Open-source design has led to many clones and software versions (e.g., Mystic Circuits' Vert, VCV Rack modules, Mutable Instruments' Marbles).
- Despite the name, it’s not a true Turing Machine—just a looping data system.
- The original Mk1 documentation includes a detailed block diagram.
- It’s a dense but straightforward through-hole DIY build—better for experienced builders. Docs are on Thonk; troubleshooting on GitHub.
THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
| Current draw +12 V [mA]: | 40 |
|---|---|
| DIY Level: | Medium |
| Depth [mm]: | 40 |
| Width [HP]: | 10 |
| Format: | 3U |
| Panel / Color: | Silver Alu |
Info & Downloads
Git Hub
Video 1
Video 2
DIY Infos
Build Guide
User Manual
Modular Grid
Manufacturer Website
Manufacturer "Music Thing Modular"
Eurorack Modular Synth format. They are designed in Herne Hill, London by Tom Whitwell.
I’m a former journalist and magazine editor (Mixmag & The Face). In the noughties I ran the Music Thing blog, before working at The Times. Got into DIY electronics after attending a workshop with Tom Bugs, reading Handmade Electronic Music, playing with Arduino and building guitar pedals.
Contacting me directly is rarely a quick way to get help with a project or a technical problem. GitHub issue lists are a good place to start (Turing Machine, Radio Music), a search of MW DIY will often find answers, as will looking at the Facebook Synth DIY group.
You can read more about Music Thing Modular and open source in this article: Why Open Source Music Hardware works for Music Thing Modular.
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Manufacturer / Hersteller
Thonk Ltd.
Vantage Point
Unit 14, Floor 6
BN1 4GW Brighton
UK
support@thonk.co.uk
EU responsible
Tech Creation Lab Leipzig UG (haftungsbeschränkt)
Selnecker str. 26
04277 Leipzig, Germany
support@exploding-shed.com
WEEE-Nr.: DE94097895
Info & Downloads
Git Hub
Video 1
Video 2
DIY Infos
Build Guide
User Manual
Modular Grid
Manufacturer Website