Stepper Motor Control with an Arduino and a ULN2004 IC

[MinTrinidad]

check your supply voltage and current. Maybe one of the bridges are bad, try changing out the U2004. Are you sure its a Unipolar or is it a Bipolar?

[thinwhitedukenator]

Thanks for the vid. I have set mine up but my stepper motor turns soooooo slowly. I've changed the steps and rpm values but it barely makes a difference. I can only guess that it's a busted stepper motor but I bought it brand new. :/