One wheel turns and only with no weight

I got this for my birthday last year and finally got the time to get this going.
I ran all the updating software so hopefully the firmware is up to date.

I ran through the LED tutorial and everything fine but when I started doing the tutorial for trying to get the cart to move you could hear the motor try to go but it just couldn’t turn. When I turn the cart upside down only one wheel spins and it does so very slowly.

I am running this off a wall outlet and over ethernet.

I’ve read some about running this python script to do basic tests but I don’t know how to run it.

Any help would be awesome!

Hey mtli,
You should only run the motors when the GoPiGo is powered from the 8AA batteries. You shouldn’t try running them on the USB power supply.