Disable I2C Pull-Up for Nano 33 IoT

Projects Networking, Protocols, and Devices
1

Is it possible to disable the standard SDA and SCL (A4 and A5) pullup resistors on the Nano 33 IoT? I have been having difficulty keeping a stable communication between two Nano 33 IoT closely located. Seems to work for a moment then stops. I am wondering if this might work:

pinMode(pin, INPUT)

2

I am not sure it would work but I doubt it will solve the problem. But you can try it.

3

Is it possible to disable the standard SDA and SCL (A4 and A5) pullup resistors on the Nano 33 IoT?

The only way is desoldering R13/R14. But I agree with Smajdalf that this probably doesn't help as two 4k7 pull-ups result in a 2.35kΩ pull-up resistor which is within the limits for a 3V3 system.

I have been having difficulty keeping a stable communication between two Nano 33 IoT closely located. Seems to work for a moment then stops. I am wondering if this might work:

I'm missing the usual wiring diagram and code used!