Oops, the schematic had the LCD wired to the second (xxx1) I2C bus, but
actually it should be wired to the first (xxx0) - shared with the audio
board - as that is the 'default' arduino I2C bus for the Teensy 4.0.
Whislt editing the schematic, also add a warning about using external
PSU and plugging in USB - you need to snip a track on the Teensy. See
the Teensy docs for more details.
Oops, the schematic had the LCD wired to the second (xxx1) I2C bus, but actually it should be wired to the first (xxx0) - shared with the audio board - as that is the 'default' arduino I2C bus for the Teensy 4.0.
Whislt editing the schematic, also add a warning about using external PSU and plugging in USB - you need to snip a track on the Teensy. See the Teensy docs for more details.
Signed-off-by: Graham Whaley graham.whaley@gmail.com