If you’re not already familiar, mt32-pi is an open source project which emulates the Roland MT-32 and other MIDI devices using a Raspberry Pi, and can be connnected to MiSTer FPGA as well as vintage PCs and – well, basically any other equipment that supports MIDI output.
Two versions of the kit are offered for sale – an “enhanced” version (which sold out within minutes of going public) for £64.99 and a “standard” kit for £54.99 – which is still available at the time of writing. He is UK-based but international shipping is available. The enhanced version offers a signal booster intended to eliminate potential issues when used with longer cables.
Features (as stated on the linked shop page) are as follows:
- Build your own standalone MIDI synthesizer based on the Raspberry Pi Zero 2 W.
- Supported by the open-source mt32-pi project, providing Roland MT-32 and SoundFont-based synthesizer engines.
- TRS Type A MIDI in, 3.5mm stereo audio out via. hi-fi PCM5102 DAC.
- 128x64px OLED, two control buttons, and a unique jog wheel for volume control.
- MiSTer FPGA compatible, using a standard SHORT (<30cm) USB 3.0 to micro-B cable (as found on portable hard disks).
The parts included in the kit comprise of:
- Main PCB
- Top MATTE BLACK faceplate (GLOSSY WHITE available on request, please send a message after ordering!)
- Bottom aluminium faceplate
- 8x screws, 4x brass standoffs
- Self-adhesive heatsink for Raspberry Pi Zero 2 W
- Thermal pad
- Braided lanyard
- Official mt32-pi small holographic sticker
An official 3D printed case is also available separately.
Users will have to source their own Raspberry Pi Zero 2 W, and if they wish to use their mt32-pi with real vintage MIDI hardware, will also require a TRS to MIDI cable.