Need Help Driving Stepper Motor using MC3479p Driver - Electronic Circuits Projects Diagrams Free

Freak-A-Nature · 10th December 2004, 02:31 AM

I'm trying to set up the MC3479p Driver circuit to control a 2 phase bipolar stepper motor (LB82773-M1) and need help getting the motor to move in full steps and either Clockwise or Counterclockwise. The stepper motor spec sheet recemends that driver and has schematics that show how they're connected. I've done all that can't seem to get the motor to budge. I'm using the motorolla HC12 microprocessor to program, but am getting no results. I've also tried moving it with out the microprocessor by setting pin 10 (CW/CCW) to a high (5V) and pulsing pin 5 (Clk) with 5V. 5V being TTL logic 1. Anybody experience these components before. Any feedback is appreciated. Thanks

williB · 10th December 2004, 02:44 AM

http://rocky.digikey.com/WebLib/On-S...ata/MC3479.pdf
the input to the clock may float high ..so touching it to 5V wouldent change the state
solution::
try touching the clock input to ground..

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10th December 2004, 02:31 AM	(permalink)
Freak-A-Nature	Need Help Driving Stepper Motor using MC3479p Driver I'm trying to set up the MC3479p Driver circuit to control a 2 phase bipolar stepper motor (LB82773-M1) and need help getting the motor to move in full steps and either Clockwise or Counterclockwise. The stepper motor spec sheet recemends that driver and has schematics that show how they're connected. I've done all that can't seem to get the motor to budge. I'm using the motorolla HC12 microprocessor to program, but am getting no results. I've also tried moving it with out the microprocessor by setting pin 10 (CW/CCW) to a high (5V) and pulsing pin 5 (Clk) with 5V. 5V being TTL logic 1. Anybody experience these components before. Any feedback is appreciated. Thanks

10th December 2004, 02:44 AM	(permalink)
williB	http://rocky.digikey.com/WebLib/On-S...ata/MC3479.pdf the input to the clock may float high ..so touching it to 5V wouldent change the state solution:: try touching the clock input to ground..