![]() ![]() Can you show us the stepper motor you are using. Since I have a 12v stepper that I salvaged out of a printer, can I just hook the com port on the ULN2803 to the positive of a 12v wall transformer? What do I connect the ground of the ULN2803 to? Since the ULN2803 has 8 control pins, I should be able to hook 2 4-wire steppers up to it fine? Also, if I connect the wires of the stepper in the wrong order will it have any adverse effects, or can I just guess and check the configuration until the motor turns? Sorry for all the questions, and thank you for all the answers, I just want to make sure it will work and I don't break anything! A bigger delay between each step means slower rotation, smaller delay between steps means faster rotation To determine the speed just alter the delay_ms between each step. ![]() Fairly simple, as long as you know what wires go were! The code I used was fairly simple. I did this about a year ago, Yes you could do that. ![]() Is this correct? How would I go about programming it to control the speed and position? Thank you for any help! I was looking around, and it sounds like I could just hook up a stepper motor to a microcontroller with a ULN2803 and it would work without any other components. ![]()
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