Adafruit Motor Shield V2 Came with Bad Power Header.

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garofalo42
 
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Adafruit Motor Shield V2 Came with Bad Power Header.

Post by garofalo42 »

Hello, I recently purchased the Adafruit motor shield.
Everything is fine but the 2 pin power header was stripped on the positive
terminal. Everything still works but the position wire keeps falling out.
I posted a video on youtube here of my setup:

https://www.youtube.com/watch?v=nfz56wc ... pOG7HpTpZw


Also, I have another problem and it may or may not be the board at fault.
The video shows my setup with 2 servo motors, 1 stepper motor and 1 dc
motor. When I modified the motor party example to have two dc motors it did
not work. I connected the second dc motor to motor port 2(M2). I used the
code from the guide: Adafruit_DCMotor *myOtherMotor = AFMS.getMotor(2); and
respective commands from the motor party example for myOtherMotor. I used a
multimeter to check for voltage at M2 and it isn't getting power to the
second dc motor. I am using a benchtop power supply set to 12V. Any idea
what the problem could be?


Thank you,

Anthony

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garofalo42
 
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Re: Adafruit Motor Shield V2 Came with Bad Power Header.

Post by garofalo42 »

Here is my code that will not supply power to the M2 dc motor.
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adafruit_support_mike
 
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Re: Adafruit Motor Shield V2 Came with Bad Power Header.

Post by adafruit_support_mike »

WRT the stripped terminal block, we can get you a replacement easily enough.

WRT the motors, let's try some comparison tests. If you drop back to using a single motor, can you get it to run from M2?

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garofalo42
 
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Re: Adafruit Motor Shield V2 Came with Bad Power Header.

Post by garofalo42 »

adafruit_support_mike wrote:WRT the stripped terminal block, we can get you a replacement easily enough.
Ok, can you please send one?
adafruit_support_mike wrote:WRT the motors, let's try some comparison tests. If you drop back to using a single motor, can you get it to run from M2?
Yes, I have tried a single motor on M2 with no motor on M1. I changed the code to only turn on M2 but still nothing happens and no voltage is reaching the pins. I have tried using several(4) different motors and they all work on M1 but none will run on M2.

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adafruit_support_mike
 
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Re: Adafruit Motor Shield V2 Came with Bad Power Header.

Post by adafruit_support_mike »

Send a note to [email protected] with a link to this thread and the folks there will get you a set of Motor Shield terminal blocks.

WRT the trouble on M2, it sounds like you have a dead H-bridge, or at least one half-bridge.

Try connecting one side of a DC motor to GND and the other side to one of the M2 terminals. Load a sketch into the Arduino that runs M2 forward for 1 second then backward for 1 second, and see if the motor does anything. Move the non-GND motor connection to the other M2 terminal and try it again.

That will tell us whether one side of the bridge is dead, or if the whole bridge is gone.

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