How to Control a 12V Unipolar Stepper Motor with a Microcontroller?

Click For Summary
SUMMARY

This discussion focuses on controlling a 12V unipolar stepper motor using a microcontroller. The L6220 chip is identified as a potential driver, capable of handling up to 50V, but lacks voltage conversion capabilities. Participants recommend using four MOSFETs with built-in diodes connected directly to the microcontroller and an external power supply for effective operation. This approach is deemed more cost-effective and efficient for driving the motor.

PREREQUISITES
  • Understanding of unipolar stepper motor operation
  • Familiarity with microcontroller interfacing
  • Knowledge of MOSFETs and their applications
  • Basic principles of back EMF protection
NEXT STEPS
  • Research the specifications and applications of the L6220 stepper motor driver
  • Learn about MOSFET selection and implementation in motor control
  • Explore methods for back EMF protection in motor circuits
  • Investigate external power supply options for stepper motors
USEFUL FOR

Electronics enthusiasts, hobbyists, and engineers interested in motor control applications, particularly those working with unipolar stepper motors and microcontrollers.

frogdogbb
Messages
45
Reaction score
0
Hey all I am trying to sort through data for controlling a unipolar stepper motor with a microcontroller. I have done this before but the hardware was already in place on a development board. What I need is a way to drive a 12V Unipolar stepper with a microcontroller. I have found a number of chips that may do what I need as far as switching and back EMF protection but not voltage conversion. I looked at a L6220 it says it can handle up to 50V on the output but the data sheet makes no mention of how this is accomplished. Maybe there is an easier way or maybe I am missing a part of the puzzle. Anyone have stepper motor experience?
Thanks
Ben
 
Engineering news on Phys.org
look like it does no voltage conversion, you need an external source, the center tap on the diodes stops emf. i'd use 4 mosfet here with built in diodes straight to the microcontroller and an add on power suppy, probably would be cheaper too.
 

Similar threads

What is the limiting factor for the maximum speed of stepper motors?
  • · Replies 2 ·
Replies
2
Views
2K
How can I wire a bipolar stepper motor to switches for my laser engraver?
  • · Replies 11 ·
Replies
11
Views
2K
Controlling a Stepper motor with L298N board
  • · Replies 3 ·
Replies
3
Views
3K
Controller for Switched Reluctance Motor
  • · Replies 4 ·
Replies
4
Views
1K
Controlling a stepper motor-basic equipment
  • · Replies 1 ·
Replies
1
Views
1K
12V DC Motor in Light Fixture with Dimmer & 12V DC to 110V AC Inverter
  • · Replies 21 ·
Replies
21
Views
3K
How can I achieve higher speeds when running stepper motors?
  • · Replies 5 ·
Replies
5
Views
2K
Silent DC Motor for Automatic Watch Winder | Feasibility Study Stage
  • · Replies 17 ·
Replies
17
Views
2K
Electronics How to control a stepper motor in closed loop (PID) in arduino?
  • · Replies 5 ·
Replies
5
Views
6K
High Current 12V DC motor speed control
  • · Replies 6 ·
Replies
6
Views
3K