A Guide to Arduino & the I2C Protocol (Two Wire) | Arduino Documentation | Arduino Documentation
Amazon.com: SparkFun Qwiic Shield Compatible with Arduino Nano-connect the I2C bus (GND, 3.3V, SDA and SCL) to four Qwiic connectors (two horizontally and two vertically mounted)-daisy chaining-Soldering Required : Electronics
Multiple I2C Buses with an Arduino and TCA9548A Module
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