What Adapter should I get? Nema-17 12v 350mA stepper.

[robbobfrh84]

Hey there,

I'm pretty much new to all aspects in this world, ultimately attempting to build a small hobby CNC router.

I currently have.....

- adafruit motor shield v2
- Arduino Uno
- 12v Nema-17 12v 350mA bipolar https://www.adafruit.com/product/324
- multimeter
- 12v "AD adapter"

My question is...

What is the ideal adapter to power my steppers?

I may have already made a big mistake, but I need to get the right adapter regardless If i need to start over.

My big issues is I can't figure out if i need an "AC adapter", an "AC/DC adapter", a "DC adapter" or what. I'm getting a big confused of the difference, and which one this stepper needs and why. Looks like this motor calls for 12v with a 350mA current. I do already have a 12v 300mA "AC adapter" http://www.radioshack.com/product/index ... Id=3875402.
Thanks!

[adafruit_support_bill]

AC will not work. You need a 12V DC adapter with at least 700mA. https://learn.adafruit.com/all-about-stepper-motors/faq

This one would be perfect: https://www.adafruit.com/products/798

[robbobfrh84]

Alright! Thanks for that info, now i know that the current phase needs to be at least twice the current phase of my motor(two phases at once), understand where you got that 700mA from now.

I actually already have this regulated, filtered, Rated 3-12VDC, 1A output adapter labled "AC-to-DC Power adapter"... Would this work? Didn't want to use it because I thought 1A would be too much for this motor, but slowly understanding that very BASIC aspects of electronics.

Am I still barking up the wrong tree with this adapter?

Thanks for your help, again Bill!

- Bob

[adafruit_support_bill]

Yes. That one should work. Most adjustable adapters are not very powerful, but that one has 1A which will be plenty for your motor.