Something that I have always wanted and needed is some way of using USB MIDI devices with 5 Pin DIN MIDI devices and vice-versa without going through a computer (or buying a third-party device).
Teensy 3.6 can act as a USB host for USB MIDI devices, while also being able to send and receive serial data via 5 pin DIN ports. In this case, the Teensy acts as a USB host for a USB MIDI device. Any data that is received from the USB MIDI device is sent out via the 5 pin DIN connector MIDI out port. Any data that is received from the 5 pin DIN connector MIDI in port is sent to the USB MIDI device.
This will be useful in many instances, for example sending or receiving data from M8 Headless, and then routing to USB devices such as modular USB MIDI to CV converters.
The hardware is the Serial MIDI input and output found on this page, with the addition of a USB host cable that plugs into the USB host header pins on the Teensy 3.6.
The code is based on a 6x16 USB MIDI example from the Teensyduino T36_host library.
View and download here: https://github.com/little-scale/arduino-sketches/blob/master/MIDIUSBHost_to_MIDI5PIN.ino
Example of this in action - M8 Headless with Serial MIDI Out to Teensy 3.6 Serial MIDI in. Teensy 3.6 is host for USB MIDI to CV, which thus receives messages from M8. pic.twitter.com/xcjmfPj2Yj
— Sebastian Tomczak (@littlescale) April 24, 2021
