05-06-2006, 05:14 AM
http://forums.parallax.com/images/smilies/cool.gif I have interfaced a BS2 with a ULN2003 which i intend to use in driving a unipolar stepper motor. The uln2003 is setup so it can be driven by two data lines (as in the basic projects example. I have tried every possible code to drive the motor to no avail. It quivers all the time. I am using the "high and Low" statements. eg. high 2, low two, high 3, high 2 etc. Please I need help.