caption: Troubleshooting Tips If the robot does not follow a black line, check for these common problems:
exif: {"Image DocumentName": "Troubleshooting Tips If the robot does not follow a black line, check for these common problems:", "Image ImageDescription": "The black line may need to be thicker; if the line is very thin, the color sensor response time might be too slow. The light level used in the switch statement (step 2) might need to be raised or lowered, depending on the surface color/reflectivity of the black line. It is often helpful for debugging to view the output of the color sensor directly from the EV3, via the View menu option. Make sure the sensors/motors are connected to the correct ports. Read back through the instructions and make sure all the properties for the commands are set correctly. Center for Computational Neurobiology, University of Missouri.", "Image XResolution": "300", "Image YResolution": "300", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}