Common problems with motors not working Pro Preview

We will cover the typical reasons why your robot is not moving at all.

  • #369
  • 15 Feb 2017
  • 2:23

Wrong port

By default your motors must be connected to ports B and C. So if your robot is not moving, the first place you must look at is the ports. Do the cable connections correspond to the ports selected on the move block in the programming software?

 

Cable is not reliably connected

You must push the cable up until a "click" sound is heard. So, if the ports are correct, check the cable connections in the ports.

A way to demonstrate to someone that the cable is not reliably connected is to shake the robot and the cable will come out of the port.

English

This here is our program for moving forward but sometimes the connection between the cable and the robot might not be good enough and the program won't work. So, let's stop and discuss this program.

In the program we've configured the two ports for our robot to be B and C. And now the program works. The robot moves forward. But if we just move this cable not to port C but to port D and start the same program you see that the whole robot does not move. And the diode here is blinking. This happens because the robot is trying to direct both motors to move forward and there is no motor on port C. And because there is no motor the brick detects that there is no motor cannot get some feedback from the motor and it just stops. So, what you should do now if you see this screen and this blink you just press on back to stop the program. It might be possible that the port is correct but when connecting the cable you have not pushed the cable.

So, you've not heard the click. This is the click. But sometimes you can just add the cable like this, start the program, it'll work but because you've not clicked while working the cable will move.

It's difficult to replicate it because these are good cables but it happens many times in the classroom like this. You see, it seems that the cable is connected but it's not connected and the whole program does not work.

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This Tutorial is used in the following courses and lessons

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