Why my motors don't move?

Hi!
I have robot platform from 4WD. I installed the motors on the platform and soldered the wires to the motors like some guy on YouTube, because the manufacturer didn’t match where’d + and -. Someway the motora don’t work when I connect them to a 4 batteries each 1,5V. Why? BTW I have Romeo V2.2 board and can’t find code to engines too. BTW i have Romeo V2 board and i also can’t find a code to work with my motors. Thanks for help.

Motors don't move because: batteries dead, Wires broken, rotor is locked so can't turn, motor full of sand. Who knows. what have you tested and measured? What voltage do the motors need?

Paul

The battery-holder is damaged by the look of it...

You appear to be using a mixture of batteries so suspect the problem lies there.