Stepper motors with independent ground

Hi, I was wondering if there are stepper motors where ground (GND) is allways "ON" and it only feeds by positive impulses to get moving. I have a board which generates only + on outputs, so I cannot power, for example simple nema 17 4 wire stepper. Thank you, stay safe!

google for "unipolar steppermotor"

See these three Arduino links
https://www.arduino.cc/en/Reference/Stepper
https://www.arduino.cc/en/Reference/StepperUnipolarCircuit
http://www.tigoe.com/pcomp/code/circuits/motors/stepper-motors/

How much current does your stepper motor need? NEMA 17 only refers to its physical size, but not to the voltage/current needed to make the motor step:
"A NEMA 17 stepper motor: a stepper motor with a 1.7 x 1.7 inch (43.18 x 43.18 mm) faceplate. The NEMA 17 is larger and generally heavier than for example a NEMA 14, but this also means it has more room to put a higher torque. However, its size isnot an indication of its power."

You will likely need a stepper motor driver:

paulsm:
Hi, I was wondering if there are stepper motors where ground (GND) is allways "ON" and it only feeds by positive impulses to get moving. I have a board which generates only + on outputs, so I cannot power, for example simple nema 17 4 wire stepper. Thank you, stay safe!

You need to have a stepper motor driver between the signal and the motor. Most stepper drivers for bipolar motors will work with a STEP signal.

If you need more advice please post a link to the datasheet for your stepper motor.

...R
Stepper Motor Basics
Simple Stepper Code

I have nema17 17HS4401

Ok, looking at a diagram for that motor

you will need to be able to swap the + and - leads on the two coils to go from step to step.
This one from Pololu looks like it would be suitable, with 6-30V voltage input and 1.8A current capacity.
AMIS-30543

I used Controllino MINI, output for HIGH side is 0.5A max, if more than one output is used at once. Looks like Controllino MINI and MAXI cannot use "LOW" on outputs, that is why I need unipolar stepper for it. But Controllino MEGA has this "half bridge"option, so it can "LOW" an output..

paulsm:
I used Controllino MINI, output for HIGH side is 0.5A max, if more than one output is used at once.

The problem will be solved by using a suitable stepper motor driver as suggested in Reply #5

...R

So, it seems there is no point of ussing Controllino, if drivers needed like for UNO. UNO is cheaper.

paulsm:
So, it seems there is no point of ussing Controllino, if drivers needed like for UNO. UNO is cheaper.

If you don't need a PLC no, the features of the Controllino are that its ruggedized and CE & IEC61131 certified
and a low-cost PLC. Stepper motors always need a driver, PLC logic signals can at best drive relays, or
provide PWM.

A specialized board like a RepRap RAMPS board is designed for plug-in stepper drivers, this might be a
closer match if you want to drive several steppers.