user68132: Kunal Gupta:
Guys plss help me .... I am having issues in using stepper motor
I have tried both 28bjy with uln2003 and l293d .. giving it output supply of 5V .
Motor is vibrating but its shaft is not moving.
And even if shaft runs then it is different from what is expected by the logic of code
Similarly tried NEMA 17 stepper motor 4.5 KG using drv8825 driver and L293D driver ... Giving 12 v external supply.
And same results as 28bjy .... motor vibrating but its shaft is mot moving as expected or absolutely not moving
I have read and understood all the concept of driving stepper motor by full step method and hafl step method ....and using at first direct examples from net .. but still not figuring out what is the problem

user69753: Try  lowering the rpm in the code. I had a similar issue with anything over about 18rpm using certain libraries with certain stepper motors.

68132: <p>Kunal Gupta:
Guys plss help me .... I am having issues in using stepper motor</p>
<p>I have tried both 28bjy with uln2003 and l293d .. giving it output supply of 5V .
Motor is vibrating but its shaft is not moving.
And even if shaft runs then it is different from what is expected by the logic of code</p>
<p>Similarly tried NEMA 17 stepper motor 4.5 KG using drv8825 driver and L293D driver ... Giving 12 v external supply.</p>
<p>And same results as 28bjy .... motor vibrating but its shaft is mot moving as expected or absolutely not moving</p>
<p>I have read and understood all the concept of driving stepper motor by full step method and hafl step method ....and using at first direct examples from net .. but still not figuring out what is the problem</p>
 69753: <p>Try  lowering the rpm in the code. I had a similar issue with anything over about 18rpm using certain libraries with certain stepper motors.</p>
