Music Thing Modular - Turing Machine mk2
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 |
Manufacturer / Hersteller:
Thonk Ltd.
New England House
BN1 4GH Brighton
UK
support@thonk.co.uk
EU responsible:
Tech Creation Lab Leipzig UG (haftungsbeschränkt)
Nonnenstrasse 19
04229 Leipzig, Germany
support@exploding-shed.com
WEEE-Nr.: DE94097895
Product Safety Information
Eurorack DIY Kits
Important Notice & Intended Use
Please read this safety guide before installation or use. This kit is intended for adult users experienced in electronics and modular synthesis. Assembly, including soldering, is required. Proper testing and installation are essential to ensure safe and functional operation. The completed module is intended for installation in a Eurorack-compatible synthesizer system powered by ±12V and +5V.
General Warnings
1. Electrical Hazards:
• Ensure the power supply matches the module’s specified voltage and current ratings (refer to the product manual). Incorrect voltage can damage the module and pose a safety risk.
• Never connect or disconnect the module while the Eurorack system is powered on.
• Wrong polarity can damage your module or system. Make sure the module is connected with correct polarity.
2. Heat Generation:
• The module may generate heat during operation. Ensure proper ventilation within your Eurorack case to prevent overheating.
3. Sharp Edges:
• The module’s faceplate and components may have sharp edges. Handle with care to avoid cuts or scratches.
4. Small Parts:
• Contains small parts that could cause a choking hazard. Keep away from children and pets.
5. Compatibility:
• This module is designed specifically for Eurorack-compatible systems. Connecting it to non-compatible systems may result in damage or malfunction.
Assembly Requirements
• Soldering skills are required to complete the module.
• Ensure a clean, well-lit and ventilated workspace free of flammable materials during assembly.
• Use appropriate tools and safety equipment, such as eye protection.
Testing
• Test the module thoroughly for shorts or incorrect assembly before powering it in your Eurorack system. When the unit has malfunctions due to incorrect assembly, the entire Eurorack system might be damaged. It's a good idea to test it in a separate case with only that single module.
• Use a multimeter or other appropriate tools to confirm proper functionality.
Installation and Use
• Mount securely in a Eurorack case using the provided screws.
• Use only the included or manufacturer-recommended power cable.
• Connect only when the power is off.
• Follow the module's user guide for instructions on operation. Do not exceed the input/output limits specified.
Responsibility
Users are solely responsible for proper assembly and testing. Contact manufacturer support for assistance if needed.
Environmental Safety
• Dispose of the module, its components, and packaging in accordance with local electronic waste regulations.
Liability Disclaimer
• The manufacturer or distributor is not responsible for any injury, damage, or malfunction resulting from improper installation, use, or modification of this product.
Contact Information
For further assistance, contact the manufacturer (you'll find the info under each product in our shop) or our shop support team at:
Tech Creation Lab Leipzig UG (haftungsbeschränkt)
Nonnenstrasse 19, 04229 Leipzig, Germany
support@exploding-shed.com
Thonk Ltd.
New England House
BN1 4GH Brighton
UK
support@thonk.co.uk
EU responsible:
Tech Creation Lab Leipzig UG (haftungsbeschränkt)
Nonnenstrasse 19
04229 Leipzig, Germany
support@exploding-shed.com
WEEE-Nr.: DE94097895
Product Safety Information
Eurorack DIY Kits
Important Notice & Intended Use
Please read this safety guide before installation or use. This kit is intended for adult users experienced in electronics and modular synthesis. Assembly, including soldering, is required. Proper testing and installation are essential to ensure safe and functional operation. The completed module is intended for installation in a Eurorack-compatible synthesizer system powered by ±12V and +5V.
General Warnings
1. Electrical Hazards:
• Ensure the power supply matches the module’s specified voltage and current ratings (refer to the product manual). Incorrect voltage can damage the module and pose a safety risk.
• Never connect or disconnect the module while the Eurorack system is powered on.
• Wrong polarity can damage your module or system. Make sure the module is connected with correct polarity.
2. Heat Generation:
• The module may generate heat during operation. Ensure proper ventilation within your Eurorack case to prevent overheating.
3. Sharp Edges:
• The module’s faceplate and components may have sharp edges. Handle with care to avoid cuts or scratches.
4. Small Parts:
• Contains small parts that could cause a choking hazard. Keep away from children and pets.
5. Compatibility:
• This module is designed specifically for Eurorack-compatible systems. Connecting it to non-compatible systems may result in damage or malfunction.
Assembly Requirements
• Soldering skills are required to complete the module.
• Ensure a clean, well-lit and ventilated workspace free of flammable materials during assembly.
• Use appropriate tools and safety equipment, such as eye protection.
Testing
• Test the module thoroughly for shorts or incorrect assembly before powering it in your Eurorack system. When the unit has malfunctions due to incorrect assembly, the entire Eurorack system might be damaged. It's a good idea to test it in a separate case with only that single module.
• Use a multimeter or other appropriate tools to confirm proper functionality.
Installation and Use
• Mount securely in a Eurorack case using the provided screws.
• Use only the included or manufacturer-recommended power cable.
• Connect only when the power is off.
• Follow the module's user guide for instructions on operation. Do not exceed the input/output limits specified.
Responsibility
Users are solely responsible for proper assembly and testing. Contact manufacturer support for assistance if needed.
Environmental Safety
• Dispose of the module, its components, and packaging in accordance with local electronic waste regulations.
Liability Disclaimer
• The manufacturer or distributor is not responsible for any injury, damage, or malfunction resulting from improper installation, use, or modification of this product.
Contact Information
For further assistance, contact the manufacturer (you'll find the info under each product in our shop) or our shop support team at:
Tech Creation Lab Leipzig UG (haftungsbeschränkt)
Nonnenstrasse 19, 04229 Leipzig, Germany
support@exploding-shed.com
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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Info & Downloads
Git Hub
Video 1
Video 2
DIY Infos
Build Guide
User Manual
Modular Grid
Manufacturer Website