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Replying to @Jaxter184

The HT16K33 only has three address select pins, so you max out at 8 modules per bus. I considered using an I²C multiplexer (like the one linked), but since the Feather M4 had enough sercoms to go around, figured I’d keep it simple this way. https://learn.adafruit.com/adafruit-tca9548a-1-to-8-i2c-multiplexer-breakout/overview

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