User avatar
valver
Posts: 137
Joined: Fri Mar 22, 2013 10:01 pm

Stepper motor

Fri Apr 18, 2014 6:25 pm

Hi,

I bought this stepper motor : https://www.dropbox.com/s/x7sdps4dksxp3 ... 4-3008.pdf

And looking at the forum meeting different solutions to control:

-DRV8825
-Allegro A4988
-SLA7062/67

Which recommend to me? What is the easiest to implement? And the cheapest? Why this choise ?

Thanks in advance.

User avatar
valver
Posts: 137
Joined: Fri Mar 22, 2013 10:01 pm

Re: Stepper motor

Sat Apr 19, 2014 8:52 pm

Up

User avatar
FLYFISH TECHNOLOGIES
Posts: 1750
Joined: Thu Oct 03, 2013 7:48 am
Location: Ljubljana, Slovenia
Contact: Website

Re: Stepper motor

Sat Apr 19, 2014 9:19 pm

Hi,
valver wrote:-DRV8825
Not ok. (Output current limit).
valver wrote:-Allegro A4988
Not ok. (Output current limit).
valver wrote:-SLA7062/67
SLA7062 conditionally suitable (not recommended for new designs):
- On upper limit for unipolar driving.
- Not suitable for bipolar driving.

valver wrote:What is the easiest to implement?
This always depends on current skills of the person involved...

valver wrote:And the cheapest?
http://www.google.com


Best wishes, Ivan Zilic.
Running out of GPIO pins and/or need to read analog values?
Solution: http://www.flyfish-tech.com/FF32

User avatar
valver
Posts: 137
Joined: Fri Mar 22, 2013 10:01 pm

Re: Stepper motor

Sun Apr 20, 2014 5:00 pm

Thanks for your answer.

-DRV8825 13.95$
Maximum current per phase: 2.2 A*
*With sufficient additional cooling.
This meets the current specifications with heatsinks
Like this?
Image


-Allegro A4988 9.95$
Maximum current per phase: 2 A*
*With sufficient additional cooling.


-SLA7062/67: Discarded

If none of the above? You recommend any?

Thanks in advance

User avatar
FLYFISH TECHNOLOGIES
Posts: 1750
Joined: Thu Oct 03, 2013 7:48 am
Location: Ljubljana, Slovenia
Contact: Website

Re: Stepper motor

Sun Apr 20, 2014 6:18 pm

Hi,
valver wrote:This meets the current specifications with heatsinks
Like this?
... in case of proper dimensions... if its dimensions are 1cm by 1cm, then it's definitely not proper.
valver wrote:You recommend any?
You need to make a decision first in which mode you'd like to control your motors (bipolar, unipolar).


P.S. And... not to forget, .... this is RasPi forum...


Best wishes, Ivan Zilic.
Running out of GPIO pins and/or need to read analog values?
Solution: http://www.flyfish-tech.com/FF32

Return to “Beginners”