Arduino driving a DC motor

[jrc123sjc]

The arduino can only source so much amperage. To drive larger devices use the arduino to control a transistor. The transistor will allow for higher currents in devices (motors, fans, actuators). You will also need another power source and some components like resistors.

[cputampa]

I want to do the same thing but with bigger motors like windshield wiper or 1/3HP servo motors do you know of a shield that can do this?

[jordon9207]

What battery did you use a regular 9 V?

[ozdemir5911]

is that motor shield a diy or something you can buy? i wonder about how much current that shield can handle. there are a few motor shield in market but they can handle more than 4 amps. this is definately a big problem if you want to drive more powerfull motors.

[TheBetterPeter]

Great !

[611w33]

please tell me why i cannot drive a motor with powerful rotations? everytime i have to initiate the rotation!! please give me some suggetions !!

[p5ycon]

@611w33 some motors require more power to start than to run

[KingTesticus]

a much more complex ritual of starting, stopping and reversing could be programmed into this circuit and potentially create a "smart" ball you have to chase or something...

[geekionizado]

What happen to the other outputs and inputs of arduino? Can't use them?

[fennecfanatic]

@geekionizado The unused pins appear to be brought out in a header on the far side of the shield.