Hi, I am currently working on my senior design project for electrical engineering which happens to involve the use of a stepper motor to turn a turret, all controlled by a micro controller. I have spent the last few days trying to get my motor setup to work but can get it quite right. For prototyping reasons I am using an arduino mega, one of the generic l298n driver boards, and a 12-24V nema 17 stepper. I have made sure to have the winding correctly figured out (using ohm meter found the ones that have no resistance between them) and connected them so that coil 1 goes to out1 and out2 and coil 2 goes to out3 and out4. I have also tried every other combination of those 4 wires that I could think of. The motor will either vibrate, or turn a bit but the number of steps seems random and it sometimes “jumps” back and forth. I am running an 18.5V, 4.9A power supply for the motor/driver supply, and powering the driver logic with the arduino+5v out. I have also made sure to attatch both the 18V supply’s ground and the GND coming out of the arduino together at the GND connector of the driver. I earlier had the motor sorta working with a 12V source but the torque was terrible ( barely held with my fingers and it stalled out).
Part number for the Motor is: 17HS16-2004S
I have also done a connectivity check from the l298n pins to all the connectors and everything seems to be connected.
Here is an attempt at uploading a schematic of my setup:
C:\Users\Justin\Desktop\Justin’s%20Shtuff\Images
Any help would be appreciated 