I am attempting to use a nano with a A3967 easy driver to move a nema 16 12v stepper aprox 1/2 rotation stop. Then return to original location. I plan on using a 12v supply and want to use a relay to send a 12v signal or reference to the nano to start the stepper forward to a certain spot and stop. When the relay stops sending the signal to nano make the stepper reverse to original position. I'm making a batman wall decoration using rgb led strip lighting not on arduino with a pir circuit that changes the color of lights at that time i want the arduino to move the wings out with one color and back in with a different color. my problem is not sure how to use arduino for ref signal and ho to write programming any suggestions would be helpful.
Thanks
I have not created any arduino program still waiting to recieve my boards and still learning how to program. as for the relay its part of my pir circuit. it feeds a pc board for my leds. i can try to step the volage down but not sure how to wire it to the nano. outside of playing with the blink program i have no experience with building or using arduino. i just know that it can do what i need. still learning how.
If you must trigger the Arduino from a 12v circuit you can use two resistors as a voltage divider to reduce the signal voltage below 5v. To bring 12v down to (say) 4.3v you could use a 10k resistor and 5.6k resistor. But do make sure that the maximum voltage from the voltage divider can NEVER exceed 5v.