Stepper power supply choice

Using Arduino Motors, Mechanics, Power and CNC
1

I have the following stepper coming soon and need a power supply. I am planning on using an a4988 controller. I have read several articles and forum posts but steppers seem to confuse me about their power supply. The stepper will be turning a table, it will be direct drive and have about 4 pounds in it at anytime. It will only be turning 1/6 of a turn at a time and needs to do that in about a second. Based on what I have read, the more voltage the better with the controllers range. So, I am thinking of a 24volt 1amp supply. Can anyone add some reassurance that this would be a good choice?

Thank you,

Anthony

Model 42BYGH34-0400A
Material Metal
Dimension approx. 42x42x34mm
(Length x Width x Thickness)
Step Angle 1.8°
Rated Voltage 12V
Rated Current 0.4A
Number of phase 2
Resistace Per Phase 30Ω±10%
Rotor Intertia 34g.cm2
Holding Torque 28N.cm
Detent Torque 1.6N.cm

2

Be sure to use code that can accelerate and decelerate the table motion.

Paul

3

Use the highest convenient voltage that is within the specs of the A4988. I use a 19v laptop power supply for some similar motors. 24v would be better.

...R
Stepper Motor Basics
Simple Stepper Code

4

Robin - thank you for the info. I probably have an old laptop supply around. If I decide to buy a power supply, would the 1 amp work?

Thank you,
Anthony

5

aiannar974:
If I decide to buy a power supply, would the 1 amp work?

That should be plenty but if it was my decision I would get one with more current unless there was a significant difference in the price.

...R