Rover 5 - Need Motor Driver Shield?

Hi,
a want to build my own robot with a rover 5 chassis. the rover contains 4 dc motors.

Specs:
4 independent DC motors with 210 mA free run and 2.4 A stall current at 7.2 V
4 independent optical encoders

Could anyone tell me, if I need a driver shield to control the motors?
Or is there a way to use the build-in arduino UNO outputs?

Here are the rover 5,
http://www.exp-tech.de/dagu-rover-5-chassis-4wd-4-motors-4-encoders

Regards
Thank you

Ronny

ronnycsharp:
Hi,
a want to build my own robot with a rover 5 chassis. the rover contains 4 dc motors.

Specs:
4 independent DC motors with 210 mA free run and 2.4 A stall current at 7.2 V
4 independent optical encoders

Could anyone tell me, if I need a driver shield to control the motors?
Or is there a way to use the build-in arduino UNO outputs?

Here are the rover 5,
http://www.exp-tech.de/dagu-rover-5-chassis-4wd-4-motors-4-encoders

Regards
Thank you

Ronny

Arduino outputs can only sink/source an absolute maximum 40mA. 20mA to 30mA is safe.

okay thank you.
So I have to use a driver shield with external power.
Do you know if I could use the Adafruit Motor Driver Shield?

Thank you.

ronnycsharp:
okay thank you.
So I have to use a driver shield with external power.
Do you know if I could use the Adafruit Motor Driver Shield?
Adafruit Motor/Stepper/Servo Shield for Arduino kit [v1.2] : ID 81 : $19.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Thank you.

Well I know it can drive 4 motors, with speed and direction control, but am unsure about it's current capabilities. If you read the documentation carefully it will answer that question.

Edit: That particular motor shield is listed as "discontinued", by the way. The new one is here:-
Adafruit Motor/Stepper/Servo Shield for Arduino v2 Kit - v2.3
And it claims it can handle 3A peak, so I'd say it should be fine for your motors.

really nice.
thank you =)

I have a couple Rover 5 projects. I use the $3 L298N h-bridge modules from ebay to power them.

Here's a link to my Mecanum wheeled Rover 5.

Here's a link to my L298N tutorial.

Here's another thread about the Rover 5.