How to route a stepper motor through an H-bridge and back into an Arduino?

Question

So I’ve gone and tried connecting the VCC and GND of a six lead stepper motor (just the two) to the BTS7960 H-bridge, and through that connected to my numbered 0-n pins for I/O on the Arduino Leonardo.

The only problem is I’m not quite sure if I’m following correctly because I have a few options and none are working at least for me.

I see it’s says use pins in case:

• 1pwm+1dir

Or

• 1pwm+2dir etc

I’m not 100% sure if I’m supposed to use any leads other than the VCC or GND from the motor, because the stepper motor didn’t come with an encoder I had to buy one separately and get that one working.

As of now I’m just connecting:

• L_EN > pin 8
• R_EN > pin 11
• LPWM > pin 9

In case of: 1 PWM + 2DIR

• Pin 9 for PWM
• Pin 8 for DIR L
• pin 11 for DIR R

I’m connecting this through the Arduino Leonardo and just need to know whether or not I messed something up considering the six leads on the motor.

Just to be clear, a one motor set up with two directions is 1PWM 2DIR correct? I tried looking it up but all I got was definitive answers for the methods of how they work but not what they are in terms of application.

Answer 1

Ref: http://www.orientalmotor.com/stepper-motors/technology/

You have a 6 lead motor designed for unipolar Nch switches, yet you are using a bipolar half-bridge IC. (BTS 7960 is not an H bridge.)

Change drivers to a dual half-bridge with V+ on both centre taps or change the motor wiring to a 4 lead bipolar and H bridge driver for each coil.