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Re: 4 motors
The Y-cable PWM adapters come in the KOP. I have used them in two past years.
We had two motors on each gear box. We absolutely did not want them to do anything other than exactly the same thing. Using the Y-cable keeps the program simpler, saves a PWM output and prevents a code mistake from possibly running the motors in different directions.
Whether you use the Y-cable depends on whether you need independent control of each motor, or whether they will be always working together.
They can save you some coding and spare a PWM output at the expense of some flexibility. It won't save you a motor controller, because as stated perviously, you still need one for each motor. You can do this with either Victors or Jaguars. (Although I wouldn't mix them.)
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