I’m working on constructing an ROV for a science project. We are using four T200 motors as thrusters for the ROV. The ROV is currently controlled over serial. When the motors are hooked directly to the speed controller all four motors work, however when the motors are connected through longer wires they do not seem to work.
For the setup with the longer wires (which we have to use in the final product): The ends of the motors are currently connected through solder and seal connectors to the long wires connected to the speed controller. Three of the four motors work, but one motor does not. It emits four rumble sounds and then a beep. Photos are attached of the setup, and a video is attached of the not-working motor making its noises.
Would appreciate any help on this,