R54 and R69 motor control and PWM servos regards to the MXP port

[rich2202]

1 - yes.

Regarding the rest: Servos take more current, and there is not enough current from the RoboRio via the MXP port. According to the description, the WCP Spartan Sensor Board has a dedicated power supply, so that must be able to provide the additional current required to drive servos.

[Greg Needel]

When you hook up a motor controller like the REV SPARK or any other (talon, victor, etc) it does not use the power pin from the MXP, just the signal and ground. Which is why it is totally safe to use the pwm in the MXP port using a breakout board like the MoreBoard.

If you are running servos, I would just use the standard PWM ports instead of buying a $100 + board just for this purpose (unless you need and want it's other functionality.

[Al Skierkiewicz]

The standard PWM outputs on the RoboRio have a power connection to supply the ~7 volts needed by servos. It is limited to 2.2 amps as I remember. That will limit your use of servos. You need to stay under that specification. As Greg has point out above, motor controllers do not use the power connection that is required for servos and therefore may be better wired to the MXP port PWM outputs.

[cpapplefamily]

So then using the PWM pin in the MAP or Standard PWM ports to drive a motor controller we only need two wires. ( signal and ground)

[Al Skierkiewicz]

Originally Posted by cpapplefamily

So then using the PWM pin in the MAP or Standard PWM ports to drive a motor controller we only need two wires. ( signal and ground)

Yes, however, it is far easier (and more reliable) to use the three wire standard PWM cabling and connectors.

[ozrien]

Can you still leverage the VEX voucher to get 2 Talon SRXs?
http://www.vexrobotics.com/pdv-2016.html
That would be two more CAN motor controllers, that don't need to use PWM channels. And they are FREE.