How do you read from multiple grid eye sensors with the same address (eg 0x68) from an Arduino Uno using the Qwiic MUX?
The Qwiic MUX is just like a rotary selector switch except that you send it a command to change channels. Your code will need to select a channel, communicate with sensor on that channel and then switch to another channel before talking to the new sensor.
We can’t help with code but check the [example in the hookup guide for how things should look.](Qwiic MUX Hookup Guide - SparkFun Learn)