Stepper Motor - Motor Shield - Power Supply

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hello everyone, new electronics if can bear me highly appreciate help.

i looking power stepper motor arduino motor shield , im not sure kind of power supply need or if motors have work shield.

stepper specs:

holding torque: 48n.cm
type: hybrid
phase: 2
current / phase: 2.5a
step angle(degrees): 1.8°
http://www.aliexpress.com/store/product/free-shipping-nema-17hs-5425-stepper-motor-length-48mm-holding-torque-48n-cm/707369_475731728.html

it seems cannot run motor arduino shield because requires higher amps per phase board can supply.
is there way around problem ? run lower amperage? or need stepper or driver?

external power:
in previous projects powering arduino wall adapter rated 1000ma 3-12 v. assume not enough stepper, should instead? , how should power it?

in final scenario have potentiometer controlling speed of rotation of stepper, spinning in 1 direction.

get notebook power (19v 4a)
problem when using l298 h-bridge: u no current control , motor hot.
!!! use pwm because current high!
(heat can reduced if power 1 coil @ time)
to 'full control', use proper stepper motor controller.  (like pololu a4988)
this allow control current.. , use microstepping


Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Stepper Motor - Motor Shield - Power Supply


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