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Created Optional features (markdown)

Steve Gilissen
2025-06-14 03:38:05 +02:00
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# OLED display
The current firmware has an option to use an OLED display (128x64).
This allows you to see which MIDI channel is set up on purrChestrion.
Simply connect the display on the provided I2C port on the board.
+5V and GND are provided as well.
Make sure your OLED display handles 5 volts input (from my experience, most of them are designed for 5 volts, but YMMV)
When using this option, I recommend using the optional rotary encoder as well to easily select the MIDI channel.
# Rotary encoder
The current firmware has an option to use a rotary encoder on pins 2 and 3.
Connect the middle pin of the rotary encoder to GND, pin A of the rotary encoder to D2, and pin B to D3.