Powering Servos with Motor Shield v2 and Rpi

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tigerrobotics
 
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Powering Servos with Motor Shield v2 and Rpi

Post by tigerrobotics »

Hi,

I am attempting to use the raspberry pi to control servos with the Motor Shield v2. I have downloaded example code and found the i2c adress with sudo i2c detect, and changed this address to the correct one in the code. When runnning the servo example, however, the servo does not do anything.

I am wondering if this is a power issue? I have power coming to the shield, but was wondering if there needs to be specific power for the servos.

If it is not a power issue, what could it be? Any other possible solutions?

Thanks.

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adafruit_support_mike
 
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Re: Powering Servos with Motor Shield v2 and Rpi

Post by adafruit_support_mike »

How are you supplying power to the Motor Shield? The 5v line from a RasPi probably can't supply enough power to make a servo run.

tigerrobotics
 
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Joined: Mon Nov 04, 2013 5:48 pm

Re: Powering Servos with Motor Shield v2 and Rpi

Post by tigerrobotics »

Power is going to the motor shield from the pi at 3.3v for communication with i2c as well as 9v external power from an outlet. Does the optional power for servos need to be connected? Because it is not at this time.

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adafruit_support_bill
 
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Re: Powering Servos with Motor Shield v2 and Rpi

Post by adafruit_support_bill »

as well as 9v external power from an outlet.
What kind of 9v supply is that and how exactly is it connected to the shield?

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