Diy qwiic cables?

[claude_j_greengrass]

@Koepel

I think the BNO055 uses 13 mA maximum, the Arduino Mega can supply that current.

Good on you. I could not find out this information. But can the Mega supply power to 3 Adafruit 9DOF modules + 2 Adafruit MPU-6050 6-DoF + MUX + 2 SparkFun QwiicBus - EndPoint ???

@Koepel

You did as if you would put SDA and SCL together in a twisted pair, then you did as if they are separated, each with a GND, then you have PCA9615 line drivers. You should have given the full schematic with all the used wires and distances and links to all modules in your first post.

If I had that information as this point, most of my problems other and s/w would be sorted. I'm still at the proof of concept/pre-prototype stage of development. Overnight I heard from another team member that we "need" to add another Adafruit: 9-DOF Orientation IMU. It's location is divergent from the other sensors and will most likely require 2 more NXP’s PCA9615 IC breakout with and Cat 5/6/7 cable span. "Such is life"

We outgrew the Uno even before we got our first data-logger/accelerometer working. Reading between the lines in regards to the Adafruit 9-DOF Orientation IMU is suspect the Mega will soon reach it's limitations and we will be forced to switch processors yet again.