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
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Connecting Two Nano Every Boards Through I2C | Arduino Documentation
Defining SCL and SDA pins on NANO - Programming Questions - Arduino Forum