Motor Shield Issue with DC Motors

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sacrament
 
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Motor Shield Issue with DC Motors

Post by sacrament »

Hi all,
I've faced an issue, when I using only one DC motor, everything works like a charm,
but if I connect two motors simultaneously, one motor works OK, but another in few times slower.
(currently I'm using Arduino 2560 MEGA board)
Any help is appreciated,
thanks.

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adafruit_support_bill
 
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Re: Motor Shield Issue with DC Motors

Post by adafruit_support_bill »

What motors are you using and how are you powering them? Is the slower motor always on the same port?

sacrament
 
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Re: Motor Shield Issue with DC Motors

Post by sacrament »

Hello,
I use DC Motor260 two pcs., one of them I connect to the M1 port, and another to M2.
I supply motors with two separate sources - from Arduino, and extra - with 9V from battery.
I've tried to connect motors to different ports - seems to be the same result.

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adafruit_support_bill
 
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Re: Motor Shield Issue with DC Motors

Post by adafruit_support_bill »

I use DC Motor260 two pcs
Do you have a link to a product spec for that?
I supply motors with two separate sources - from Arduino, and extra
Not a good idea. You should use one or the other.
- with 9V from battery.
Is that a 9v battery pack, or one of those little rectangular 9v batteries? The small rectangular ones are all but worthless for driving motors.
I've tried to connect motors to different ports - seems to be the same result.
If you swap motors and/or swap ports, is it always the same motor that is running slow? What if that is the only motor connected?

sacrament
 
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Re: Motor Shield Issue with DC Motors

Post by sacrament »

thanks for reply,
I'll check and update you with results.:)

Also I have a question, what is the best solution for supplying motors?
(only from extra source? if yes, what kind of power cell I have to use?)
thanks

sacrament
 
Posts: 4
Joined: Mon Jul 30, 2012 3:10 pm

Re: Motor Shield Issue with DC Motors

Post by sacrament »

Do you have a link to a product spec for that?
something like this:
http://www.alibaba.com/product-gs/42626 ... Motor.html

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adafruit_support_bill
 
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Re: Motor Shield Issue with DC Motors

Post by adafruit_support_bill »

what is the best solution for supplying motors?
Look here. Scroll down to the section "Powering Your Motor".

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