Data Sheet

General usage and wiring considerations

The MD04 can handle high currents, and you will need to take a few precautions with wiring. It is very

important that you do not allow motor current to flow in the logic ground path. Don't assume that just

because the Battery, MD04 and Controller grounds are all together, that all is well. If at all possible, use

two batteries, one for the logic and and the other for the motor power. Don't connect the battery

grounds together, that is already done on the MD04. If you do, then you will only create a ground loop

- and problems. The diagram below shows the general idea on keeping the logic and power sides

electrically and physically separate from each other.

Motor noise suppression

Please note that using motors with the MD04 as with any other electronic device requires suppression

of noise. This is easily achieved by the addition of a 10n snubbing capacitor across the motor. The

capacitor should also be capable of handling a voltage of twice the drive voltage to the motor.