1203BB DC Motor Speed Controller (PWM) Adjustable Motor Driver
Taking the STL from @shark29 for the motor controller box and making it smaller for just holding the motor controller. The controller is the 1203BB. I created a new lid and tried to line up the holes. It worked well for me, but it's sloppy since I just needed a box for my controller.
I've also included the fusion model file if someone wants to tweak it further.