How to Troubleshoot VEX IQ Sensors

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.”