Amp setting?

Drive a 4-wire bipolar stepper motor or a pair of DC motors from your Arduino. [Product page]
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chelios
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Joined: Sat Nov 16, 2013 1:07 am

Amp setting?

Post by chelios » Sat Nov 16, 2013 1:30 am

I'm really new to all this. So apologies in advance is this is a beginner's question.

I'm hoping to get some general advice on how to decide/work out what amp setting I should use on the motor shield (0.6A, 1.2A, or 2A).

For instance, I'm using the motor shield to power a Tamiya double gear box.
The Tamiya instructions say to use 3v for the motors.
I have a 9v battery going to the Arduino's DC jack.

Does it matter what amp setting I use?
If so, how do I figure it out?

andrew
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Re: Amp setting?

Post by andrew » Sun Nov 17, 2013 9:32 pm

The current switch determines the maximum amount of current that can flow to the motors. When the motors are in a stall situation (e.g. they're trying to turn but cannot as the load on them is too great - think holding a motor shaft still while applying power to the motor) - the amount of current they draw will increase and burn the motor out. Thus the switches help protect the motor in these situations - you select the maximum current you want to flow to the motor.

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