Using a PWM cable splitter for 2 Jaguar motors

[Randy Forgaard]

We are using one of the AndyMark gearboxes that allows the use of 2 CIM motors at one time for extra driving power on a single side of the robot.

We are starting to run out of PWM channels on the Digital Sidecar, and we would prefer not to use a second Digital Sidecar, to save on some space.

One possibility is that we could use an off-the-shelf PWM servo splitter cable, so that one channel of the Digital Sidecar could control both CIM motors that are used in a single gearbox, since both CIM motors need to receive the same signals anyway. Then, we would simply program our robot as though it has two motors (one on each side) rather than four motors.

Can anyone think of a reason why we shouldn't use a PWM splitter cable for this purpose? In this thread of the Q&A forum, the Game Design Committee says that there is no rule saying you can't do this, but they suggest there might be better technical alternatives.

Any thoughts, yea or nay? Many thanks!