MOD Logo
Beta phase in progress

Before our peripherals are available for purchase, we collect real feedback on real-life functionality.
This means that the first batch of Arduino shields is available to MOD Duo enthusiasts.
The enthusiasts give us feedback in return, allowing us to make the best possible device for you!

Description and Features

  • Complete Creative Control Freedom
  • Easy to Use and Adapted to All Users
  • An Evolving Platform for New Controllers
  • Open Software and Open Hardware


Because MOD devices are entirely configurable to suit their user’s needs, when confronted with the issue of what peripherals we would provide we realized that we shouldn’t limit ourselves to specific and existing use cases, and that the MOD Community’s collective imagination would be allowed to have all the controllers they could fathom. Thus, the MOD Arduino Shield was conceived to help developers and makers create their own effects controllers for the MOD Duo, tailored to their own unique performance requirements.


With little effort, anyone can assemble sensors and other electronic components, integrate them on an Arduino board and use it with the MOD Duo. Copy and paste some lines of code, solder components on the breadboard and easily design your own unique controller of MOD effects.


You can create your own enhanced footswitches and expression pedals. You can create powerful adaptors. You can control your effects when moving your instrument, conceive sound installations or expand your performatic capabilities while interacting with other musicians, dancers or actors on stage. We already have projects for controllers using accelerometers, distance or light sensors but imagine using heart-rate or brainwave monitor sensors. There are no limits!


This project is open hardware! All the project files, not only the schematics and gerber, are open and available in our Github. We are using KiCad , also an open source software, for developing our boards and cases schematics. All the components are listed in the bill of materials with links to the general suppliers.

And it is also open software. We developed an Arduino Control Chain library that will do all the hard work so developers can easily implement their own cases.

Technical Specifications

  • Compatible with most Arduino platforms
  • Perfboard available on the shield
  • Replicate user LED on the shield
  • Open source library available online at GitHub
  • Open hardware project
  • RS-485 (TIA/EIA-485) Standard - Full duplex
  • 2 RJ45 connectors
  • Power over Ethernet cable
  • Project created using KiCad EDA

Control Chain Devices

Control Chain is an open standard, including hardware, communication protocol, cables and connectors, developed to connect external controllers to the MOD. For example, footswitch extensions, expression pedals and so on.

Comparing to MIDI, Control Chain is way more powerful. For example, instead of using hard-coded values as MIDI does, Control Chain has what is called device descriptor and its assignment (or mapping) message contains the full information about the parameter being assigned, such as parameter name, absolute value, range and any other data. Having all that information on the device side allows developers to create powerful peripherals that Nextcan, for example, show the absolute parameter value on a display, use different LED colors to indicate a specific state, etc. Pretty neat, right?

And remember: you can daisy chain up to 4 Control Chain peripherals to your MOD Duo!

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