The Vision System uses ultrasound and image data to help the aircraft maintain its current position, enabling precision hovering indoors or in environments where a GNSS signal is not available. The Vision System constantly scans for obstacles, allowing the aircraft to avoid them by going over, around, or hovering. - DJI Phantom 4 RTK User Manual

For drone surveying, the primary function of the Vision System is obstacle avoidance. Do not turn off the obstacle avoidance unless absolutely necessary. Please contact your Propeller customer success representative or Propeller support if you are considering turning off the obstacle avoidance. 

How to calibrate the Vision System

DJI Support released a video in June 2016 on calibrating the Vision System. You can use that video or the steps below. 

1. Turn on the drone and connect it to your computer using the micro USB cable that came with the drone. 

The port for the micro USB cable is next to the microSD card slot (labeled 12 in the diagram below). 

2. Launch DJI Assistant. Make sure you have the latest version of DJI Assistant 2 for Phantom downloaded onto your computer. 

3. Click on your Phantom 4 RTK. 

4. Click on Calibration. 

5. Read through the tutorial. Then click Calibrate Now. 

6. Follow the instructions on the left-hand side of the screen. There are four steps in each stage of the calibration. You will need to calibrate the forward, downward, and rear sensors. 

It is crucial that you hold the drone at the same height and distance from your computer screen while only tilting and rotating the aircraft to aim at the blue box on the screen.

7. After you calibrate the sensors, the calibration will be calculated. Do not unplug the drone during this calculation. 

8. After the calibration is complete, you will need to restart your drone. 

9. You're all done! Unplug the drone from your computer and close out of DJI Assistant. 

Make sure you have done all other calibrations (compass, IMU, remote controller, and the gimbal) before your very first flight. We recommend you do these calibrations whenever prompted by the controller, as well as every few months, to make sure your drone is in good working order. 

I still can't do it!

We wrote these articles to arm you with everything you need to get the job done on your own, but we understand that sometimes this isn't sufficient.

If you're stuck, the Propeller hardware support team may be able to help. You can contact our support team by emailing hardwaresupport@propelleraero.com.au.