Motor Shield w Stepper - Power off after one turn

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falcon_no5
 
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Motor Shield w Stepper - Power off after one turn

Post by falcon_no5 »

Hi folks,

I'm new to this forum and almost new to arduino and adafruit.

I try to run a stepper motor with the adafruit motor shield v2, have the library installed and power it via the power jack on the arduino board (jumper is on the shield, power led is on).

Details:
- Arduino Uno R3
- Adafruit Motor Shield v2
- Stepper: QMot QSH6018 bipolar

If I run the stepper commands the stepper will turn (in each defined direction, for each defined steps) once.
After finishing this command the power led of the shield turns off.
If I try to give another command to the shield it fails, for example I have 2 commands (turn forward, turn backward) and only the first command is taken (forward).
If I plug the usb out and back in, same behaviour starts.

What is wrong? Any suggestions?

I use the commands from the StepperTest file (MotorShield Library).

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adafruit_support_bill
 
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Re: Motor Shield w Stepper - Power off after one turn

Post by adafruit_support_bill »

From the motor specs: http://www.trinamic.com/tmctechlibcd/QM ... manual.pdf
Rated Phase Current (nominal) IRMS_RATED_NOM A 2.8
The Motor Shield V2 is not a good match for this motor. It is probably shutting down due to overload.

You need a driver capable of 2.8A continuous. Preferably a constant current or "chopper" drive. Check http://www.pololu.com for a nice selection of stepper drivers.
https://learn.adafruit.com/all-about-st ... he-stepper

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