OTTO: A Pi Based Open Source Music Production Box

Want an open source portable synth workstation that won’t break the bank? Check out OTTO. [Topisani] started OTTO as a clone of the well-known Teenage Engineering OP-1. However, soon [Topisani] decided to branch away from simply cloning the OP-1 — instead, they’re taking a lot of inspiration from it in terms of form factor, but the UI will eventually be quite different.

On the hardware side, the heart of the OTTO is a Raspberry Pi 3. The all-important audio interface is a Fe-Pi Audio Z V2, though a USB interface can be used. The 48 switches and four rotary encoders are wrangled by a pair of Arduino pro micros which pass the data on to the Pi. Data is related to the user through a 320×200 LCD.

The software is being written from scratch in C++17. If you’re not a hardcore C++ developer, don’t worry. The synth engines, audio effects, and other DSP software is written in Faust, which is a bit easier to learn.

OTTO is actively being developed, with synth engines already running, a prototype in progress, and fleshed out guidelines for programming the UI. If you’re into creating music, this one is worth checking out, as is Zynthian, another Raspberry Pi based synth.

7 thoughts on “OTTO: A Pi Based Open Source Music Production Box

  1. now this is a project I can get behind, I’ve thought of many similar devices, really glad someone is out there making hardware instruments using the pi. Expect to see my RPi + 20 inch touch screen synth controller soon!

  2. This looks really promising. As someone that was interested in the OP-1, but was flummoxed at the price tag, this would definitely foot the bill. I just really wish there were some sound samples available or some demos of this available.

    Oh well…just gonna have to watch it develop on GitHub.

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