Note: After IDE get the video, then rotate the lens to finish focusing (to see the objects 20cm away) then tight
the screw.
Step 4: Get the tracking.py code and save it to the OpenMV
(1) Download “tracking.py” from:
https://github.com/uArm-Developer/OpenMV-Examples
(2) Click “File” ——"Open File” to export tracking.py