1 Stepper Motor, Uno R3, CNC, power supply question

I'm looking for a simple way to power my project. It just has one step motor and is controlled by an Uno R3 and a CNC shield with a polulu. Currently I use a 550w ATX power supply that I cut the wires of and attached to the CNC shield. I need a simpler power supply that I can just plug into the power supply slot in the Uno R3. I'd rather not cut anymore wires or do any wiring myself, mainly for safety issues.

I use this stepper motor [www.ebay.com] you can see the specs in the link

Does anyone know if its possible to just use something like these?:
[www.ebay.com]
[www.ebay.com]

And which voltage option would I choose?
Thanks for you help, I'm just trying to be safe and not cause and fires or other problems.

The power plug on the Uno is only designed to carry power for the uno, You will need to power the stepper drivers separately

Thank you for saving me some trouble, I had no idea. What about if I use an arduino nano on a v4 CNC shield? The same power socket as the R3 is on the v4 CNC shield. Would that be able to work?

Once again
I am doing a project ---- here is no information but
I can't wire and know nothing --- please design and do project for me!!



It would be nice to know what your stepper is going to do?
Does it need a lot of power, high current?
What CNC shield?
The supplier of shield doesn't help at all?

Are you going to use a special firmware / software to run project?
GRBL --- is nice and simple

You could use an Arduino and an Easy Driver powered by 6 to 30V power supply?

Power arduino via USB and power motor, via driver,
with any 12 - 24 volt supply that delivers 2+ amps

[learn.sparkfun.com]

Quote
cozmicray
Once again
I am doing a project ---- here is no information but
I can't wire and know nothing --- please design and do project for me!!

angry smiley

Everyone has to start somewhere...

Quote
cozmicray
Once again
I am doing a project ---- here is no information but
I can't wire and know nothing --- please design and do project for me!!



It would be nice to know what your stepper is going to do?
Does it need a lot of power, high current?
What CNC shield?
The supplier of shield doesn't help at all?

Are you going to use a special firmware / software to run project?
GRBL --- is nice and simple

You could use an Arduino and an Easy Driver powered by 6 to 30V power supply?

Power arduino via USB and power motor, via driver,
with any 12 - 24 volt supply that delivers 2+ amps

[learn.sparkfun.com]

With 1 stepper motor you could guess it's to move a z axis up and down.
When I say CNC Shield with uno R3 you would probably know I mean CNC V3 like this for example [www.ebay.com]
I'm using GRBL.
I'm just looking for a safe way to power my printer. Thanks for the attitude

Quote
Dust

Quote
cozmicray
Once again
I am doing a project ---- here is no information but
I can't wire and know nothing --- please design and do project for me!!

angry smiley

Everyone has to start somewhere...

Thanks Dust

Edited 1 time(s). Last edit at 08/26/2016 01:04PM by Cmmain.

I guess I don't know what your "printer" is?

Does it have Three axes moved by stepper motors, controlled by a controller.

A "printer" with only a moveable Z axis? Is that really a printer?
X and Y moved by corvette engines on chains?

The board you got I call a GRBL board
one like it controls my CNC router X, Y and Z (spindle up down, or laser ON/OFF)
Via GRBL firmware

I use one driver on Arduino GRBL to drive Threadless Leadscrew tests

[www.youtube.com]

Without any or correct info --- one cannot supply help.

So can't help if I don't know "What it is" Photos?

Quote
cozmicray
I guess I don't know what your "printer" is?

Does it have Three axes moved by stepper motors, controlled by a controller.

A "printer" with only a moveable Z axis? Is that really a printer?
X and Y moved by corvette engines on chains?

The board you got I call a GRBL board
one like it controls my CNC router X, Y and Z (spindle up down, or laser ON/OFF)
Via GRBL firmware

I use one driver on Arduino GRBL to drive Threadless Leadscrew tests

[www.youtube.com]

Without any or correct info --- one cannot supply help.

So can't help if I don't know "What it is" Photos?

Well, if you can't figure out what kind of printer uses only a z-axis and can't offer any help please don't reply.

I would really like to see a Z-Axis only printer!

You are the X-Spurt --- I will offer no help!



Well, if you can't figure out what kind of printer uses only a z-axis and can't offer any help please don't reply.

In lack of a lab power supply with adequate protections, you can try using an ATX psu that has: OCP (over current protection - e.g. short circuits), and you can also read about the acronyms for other types of output protections. But for testing puproses, having OCP is really good, as it "might" help, not sure, but just might.

The arduino uno input has some input voltage rating - read on its webpage. It means its input has a voltage regulator which takes some variable range voltage to create a lower voltage, but stable. Usually does this by dissipating the difference as heat, so do NOT exceed the max voltage for input, otherwise the regulator will get hotter and hotter and at some point it might burn.

Feed V+ and gnd to the stepper driver directly from psu. And feed the step/dir/enable pins from arduino GPIO pins (designated in sketch) directly the the stepper driver step/dir/en. Any driver should work, if you do not want to bother with pinouts of small form factors like A4988 and similar, you can also pay a few extra and use some driver with connectors, like this or something that looks like this. As long as it says its a bipolar stepper driver, it has V+ and gnd inputs, and 4 motor outputs, and it says its driven by logical inputs of EN/STEP/DIRection, then it should work. I am assuming that your sketch requires a bipolar motor driver, coz some of the sketches out there for a single motor might be unipolar which can and might be driven slightly different.

Learn how to wire the motor wires to the stepper driver inputs. Do not disconnect the driver outputs which go to the motor while the driver is energized. Generally speaking about the area of the stepper driver output -> wires going to motor, any mistake in this area will probably cost you one driver. Each time. Otherwise the things should work.

In learning how to make things work together, first thing is to read about each component inputs and outputs. Good luck.

+ About the power supplies you linked, they should work as long as they offer more amperage than all the components consume added together. But you should not simply feed it to arduino and then use arduino outputs to feed the stepper driver, because all the current required by driver will pass trough arduino board, which is not "healthy". Also stepper driver are sort of "switching" consumers and as such they might create transients at its power inputs, with higher voltages than normal wich is also not good for the arduino board. So imho, it is healthier to split the psu output wires and wire both arduino and stepper at same time. This way the current needed by each does not have to pass trough the other one.

Edited 1 time(s). Last edit at 08/30/2016 08:11AM by NoobMan.