Connect Multiple Devices to GPIO on Jetson Nano

Robotics & Edge Computing Jetson Systems Jetson Nano
1

I am wondering if there is a way to connect multiple devices that use pins 1 to 6 to connect via i2c port. I am trying to connect Arducam camera expansion board, Adafruit Servo Controller, and PiOlED to the same GPIO using 40-pin GPIO 1 to 2 expansion board.

The camera expansion board uses the following GPIO ports: 7, 11, 12, 16, 21, 22, and I am trying to control those using Jetson.GPIO. PiOLED and Servo controller use #1-#6 GPIO pins, so there should not be any conflict. However, I cant seem to make all those work at the same time. Could this be due to limited power availability on Jetson Nano?

PiOLED does not work at all, so I wonder if I would have to replace it, and servo controller worked at first then returned I/O error upon restart. I generally have to unplug pioled and servo controller for camera to work, and vice versa.

I would appreciate any insights on this matter.

2

It sounds that there is power requirement on your usecase. Could you elaborate how many devices running simultaneously and which pin are they using as a table?

3

I have three devices running simultaneously, i.e. PiOLED, Adafruit motor featherwing, Arducam camera multiplexer.

4

I have three devices running simultaneously.

  1. 128x32 OLED display (6-pin header) connected to the first 6-pins of the 40-pin expansion header on Nano.
  • Needs 3v3 power
  • Uses 2 GPIOs
  • Communication over I2C
  • Connected to 1 and 6 on Nano for power, and 3 and 5 for I2C
  1. Adafruit stepper featherwing Add-on to drive 4 x brushed DC motors.
  • Needs 5-12V DC power + ground
  • Uses 2 GPIOs
  • Communication over I2C
  • Connected to 4 and 6 on Nano for power, and 3 and 5 for I2C

I have been able to successfully run the above two devices, however problem occurs when I try to connect a third device as follows

  1. Multi-Camera Adapter Board V2.1 (26-pin header)
  • Used to attach multiple cameras in a sequential manner.
  • Uses 3 GPIOs
  • Connected to 1 and 6 for power, and 7, 11, 12 for communication
  • Pins 3 and 5 for SDA and SCL, respectively