Asked
— Edited
This is an EZ-Robot Certified Economy Motor Controller. It is capable of 1.5 Amps (5 Watts) between 5 and 12 volts DC. This convenient motor controller connects to the EZ-B by a single cable.
The cable to the EZ-B provides +5, GND and Signal for the Motor Controller Communication
The other connections are for your motors and motor power.
* The IC will get very hot if your motors are drawing too much current. Consider adding a heat sink to the top of the chip: DigiKey Heat Sink
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They only have a positive and negative.
[EDIT]
I think I may be a little confused. I see the positive and negative for each motor on the board, then what is the "motor power" Or does that go to the ezb to for power?
+ means positive
- means negative
Motor power is the power for the motor. You can't power a motor off the ez-b. It's in the manual.