The following provides some general guidance for troubleshooting Sensors:

Step 1: Navigate to Device Info on the VEX IQ Robot Brain.

Step 2: Find the Sensor and its Smart Port.

  • Turn on the Brain and VEX IQ Controller and run the Driver Control Program.
  • Click here to view the article, “How to Pair the VEX IQ Robot Brain with the VEX IQ Controller for Wireless Operation”.
  • Click here to view the article, “How to Use the Driver Control Program.”

Does the Sensor work at all?

  • Test the Sensor.
    • Click here to view the article, “How to Use the Sensors Program in the Demos Folder.”
    • If no:
      • Ensure the Smart Cables are fully seated by pressing until an audible click is heard.
        • Try replacing the Smart Cables with new ones.
        • Click here to view the article, “How to Connect VEX IQ Devices to Smart Ports.”

If the Smart Cables were not inserted fully, but now they are, re-try the Driver Control Program. The display on the Brain should show “Running” followed by a counting timer.

  • Does the display shows “Stopped”, “Update Needed” or “I2C error detected”?
    • Click here to view the article, “How to Fix Displayed Error Messages on the VEX IQ Brain.”

For more information, help, and tips, check out the many resources at VEX Professional Development Plus