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Topic: Stepper Driver Suggestion (Read 258 times) previous topic - next topic

d_vee

Could anyone help suggest a relatively cheap stepper driver that also has some basic Arduino code available online? This is the stepper: 178.5 oz in NEMA 23

I'm trying to help a student with a project involving a stepper motor. We had a l298n board on hand so I started off using that with a 12V power supply. The motor was loud, but worked. When I stepped it up to the 24V 2.5A power supply that we need for the project it only made noise; no turning. I understand the l298n is a bad choice for a stepper driver.

Additionally, I have a smaller stepper I planned to use with the Arduino CNC shield with a4988 drivers, but the only Arduino code I can find is the GRBL installation. I was unable to control the stepper with the shield. I had to remove an a4988 driver and drive the stepper directly from that. So if anyone knows of a driver that has Arduino libraries or that others have used with Arduinos a suggestion would be greatly appreciated!

Robin2

#1
Apr 16, 2018, 11:49 pm Last Edit: Apr 16, 2018, 11:50 pm by Robin2
That motor requires a stepper driver that can comfortably supply 2.8 amps. I suggest you look for a driver that can supply at least 4 amps. I think drivers that use the TB66xx chip will probably be the cheapest solution.

Your power supply is probably perfectly adequate. The motor requires about 7 watts (say 14 to have a good margin) and your power supply can provide 60 watts.

For initial testing make sure to use a very slow step rate - perhaps just 1 or 2 steps per second.

...R
Stepper Motor Basics
Simple Stepper Code
Two or three hours spent thinking and reading documentation solves most programming problems.

d_vee

Just realized I never responded to this. I grabbed the TB66xx driver and it worked no problem. Thanks a lot!

Robin2

Two or three hours spent thinking and reading documentation solves most programming problems.

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