![on a messy desk, a small USB midi keyboard is connected to a Korg NTS-1 mini synthesizer via a small micro-controller board that acts as a USB host for the Akai keyboard, converting USB MIDI to traditional MIDI for the Korg](https://scruss.com/wordpress/wp-content/uploads/2022/07/miditastic.jpg)
This is great: gdsports/midiuartusbh: MIDI DIN to MIDI USB Host Converter allows your USB MIDI instruments to act as traditional MIDI controllers. It uses a Adafruit Trinket M0 to act as the USB host and MIDI output.
I modified gdsports’ design very slightly:
- Instead of using a 74AHCT125 Logic level converter and driver, I used a FET-based SparkFun Logic Level Converter
- Instead of a 5-pin DIN socket, I used a 3.5 mm stereo socket.
And it works!
![breadboard showing Trinket M0 microcontroller board, logic level shifter, audio socket breakout and two resistors](https://scruss.com/wordpress/wp-content/uploads/2022/07/Trinket-M0-MIDI_Host_bb-1024x492.png)