2 DC Motors on an arduino uno + motor shield

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J_Liu
 
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2 DC Motors on an arduino uno + motor shield

Post by J_Liu »

Hey,

I am having problem making 2 motors run at the same time. I think it might be that I am not supplying enough power to the motors. How much voltage would i need to supply in order to run 2 motors at the same time?

My assumption is that if one motor requires minimum of 4.5 V, then 2 motors will require 9V in total.

If the battery supply is not the problem, what other problems can it be possible be?

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adafruit_support_mike
 
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Re: 2 DC Motors on an arduino uno + motor shield

Post by adafruit_support_mike »

You need more current, not more voltage.

The basic unit of stuff in electronics is 'charge'.. usually electrons. Voltage makes charge want to move from one place to another, and current tells you how much charge is actually moving (actually it's a combination of "how much" and "how fast").

If you have two motors running from the same supply, the voltage across them will be the same. Each one will need its own helping of current to make the armature spin though.

What kind of motors do you have, and how much current do they want?

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