Need help on SD02B stepper motor driver

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Need help on SD02B stepper motor driver

Postby tiongpatrick86 » Fri Jul 13, 2012 4:15 pm

Hi,

I would like to know whether SD02B stepper motor driver can drive 5V stepper motor or not? :? However, i found out that in the user manual stated that it is able to drive stepper motor from 3V-40V. I have tried to connect 5V stepper motor with 5V input supply to SD02B at Vmotor pin and GND pin but the motor didn't move when i pressed the "test" switch (for few second). Any suggestion that I can solve this problem :?:
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Re: Need help on SD02B stepper motor driver

Postby robosang » Fri Jul 13, 2012 10:27 pm

Where did you get the 5V from?
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Re: Need help on SD02B stepper motor driver

Postby tiongpatrick86 » Fri Jul 13, 2012 10:58 pm

I supply 5V from voltage regulator.
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Re: Need help on SD02B stepper motor driver

Postby robosang » Sat Jul 14, 2012 7:48 am

Might not be enough current for the stepper, I do not sure, as I don have the stepper driver.
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Re: Need help on SD02B stepper motor driver

Postby yonghui » Sat Jul 14, 2012 10:05 am

try to feel the stepper motor shaft. see if it has some little torque when the test button is being pressed?
thanks&regards,
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Re: Need help on SD02B stepper motor driver

Postby hyng » Sat Jul 14, 2012 5:19 pm

Did the LED on SD02B light ON or blinking?
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Re: Need help on SD02B stepper motor driver

Postby tiongpatrick86 » Sun Jul 15, 2012 7:54 pm

No. the LED doesnt lighting even holding the test switch.
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Re: Need help on SD02B stepper motor driver

Postby tiongpatrick86 » Mon Jul 16, 2012 8:04 am

One more question, what will happen if the reset button is pressed during operation? Will it damage the driver? what can Ido?
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Re: Need help on SD02B stepper motor driver

Postby hyng » Mon Jul 16, 2012 11:44 am

Pressing the reset button will not damage the driver.
Did the power LED light ON? The mini jumper is at Vin or Vmotor? Some photos of the connections may help to verify the problem. BTW, if you only supply 5V to Vmotor, the circuit will not be powered up thus the driver is not working. You need to supply another voltage from 8V-20V to Vin for the circuit power supply. It is mentioned at page 7.
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Re: Need help on SD02B stepper motor driver

Postby tiongpatrick86 » Mon Jul 16, 2012 2:16 pm

Now i tried to supply with 12V at Vin. The power LED is on. and the mini jumper is connected at Vin. The output LED still are not light on when the test button is pressed.
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