What power supply to use with Stepper Motor + Big EasyDriver

Hello,

I've been trying to set up an automatic turntable for photogrammetry purposes but I'm struggling with the turntable part.

I am using the following components:

https://www.vanallesenmeer.nl/3d-printer-NEMA-17-stappenmotor-42byghw609 (NEMA 17 stappenmotor 42byghw609) https://www.hobbyelectronica.nl/product/big-easy-driver/ (Big Easy Driver) https://www.vanallesenmeer.nl/Arduino-Deu-USB-kabel (Arduino Leonardo)

I've tried using a 12V/2A and 5V/3.92A power supply, but both don't seem to yield results (a properly rotating motor)

Is there something wrong with the combination of my components? Do I need a different power supply from the ones that I tried to use?

Kind regards,

Wouter

Well 5V supply probably won't be enough, go with the 12V, make sure the BED is set to 1.4A (its maximum). Make sure you've correctly identified the two windings and connect one to the A+/A- terminals and the other to B+/B- (essential). Never replug the motor connections with power applied to the BED.

Make sure you are not trying to accelerate the motor too fast - you should use some degree of microstepping, try the AccelStepper library which makes speed-ramping easy.

But in the description of the motor it says it is rated at 1.7A/Phase and 3.4V, doesn't that mean that the 12V/2A wouldn't suffice? Don't I risk breaking the motor when I run it at a higher voltage?

wouterhaz: But in the description of the motor it says it is rated at 1.7A/Phase and 3.4V, doesn't that mean that the 12V/2A wouldn't suffice? Don't I risk breaking the motor when I run it at a higher voltage?

The purpose of setting the current limit in the driver is to protect the motor when high voltages are used. The voltage figure for the motor is a nominal figure. The current is the important thing. However a BigEasydriver probably cannot supply 1.7 amps without overheating and shutting down hence @MarkT's suggestion for 1.4 amps.

...R Stepper Motor Basics Simple Stepper Code