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MIDI input

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Dejvino
2026-02-21 21:12:30 +01:00
parent 94ade20143
commit 8ef4371711
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README.md
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@@ -50,13 +50,16 @@ Make sure to establish a **common ground** by connecting the ground from your ex
| GND | External 5V Supply - | External Power Ground |
| (Matrix GND) | GND (Pin 18) | Common Ground with Pico |
+----------------------+------------------------+-----------------------------+
| MIDI DIN (Serial) | | |
| MIDI OUT (Serial) | | |
| TX (MIDI OUT) | GP0 (Pin 1) | To DIN Pin 5 (via 220 ohm) |
| MIDI IN (Serial) | | (optional!) |
| RX (MIDI IN) | GP1 (Pin 2) | To DIN Pin 3 (optoisolator) |
+----------------------+------------------------+-----------------------------+
**MIDI Hardware Note**:
* **MIDI OUT**: Connect **GP0** to DIN Pin 5 via a 220Ω resistor. Connect DIN Pin 4 to 3.3V (3V3) via a 220Ω resistor. Connect DIN Pin 2 to GND.
* **MIDI IN**: Optional! Uses a 6N137 optocoupler based on [this guide](https://www.kieranreck.co.uk/MIDI-6N137-vs-6N138-vs-6N139/). Connect the optocoupler output to **GP1**.
Once everything is wired up, you can upload the code and your tracker should be ready to go!