pic: SPARK Motor Controller from REV Robotics

[philso]

It is nice to have another option, especially at a lower price.

Is the "Brake/Coast Mode" next to the positive power input terminal an LED or one of those tiny rotary switches?

Is the enclosure fully isolated or is there a metal pad on the back that is at some voltage potential?

Does the PWM input connect directly to an optocoupler LED or does it have a current limiting resistor in series with the LED? We have had trouble connecting several motor controllers of different types to the same PWM signal because the optocoupler LED's had different forward voltages and only the controller with the lowest VF would actually run.