I ask again:
Please provide a link to the product you actually have as this chip is delivered on many different boards. Does your board has pullup resistors on the PCB? If yes, what values? How long is the wiring between the Arduino and the board?
I ask again:
Please provide a link to the product you actually have as this chip is delivered on many different boards. Does your board has pullup resistors on the PCB? If yes, what values? How long is the wiring between the Arduino and the board?