IN1, IN2, IN3, and IN4 (logic input signals from the microcontroller or other control devices)
IN1, IN2, IN3, and IN4 (logic input signals from the microcontroller or other control devices)
OUT1, OUT2, OUT3, and OUT4 (connected to the stepper motor windings)
VCC (power supply) and GND (ground)
Applications
| The ULN2003 Stepper Motor Driver Module is suitable for a wide range of applications, including |
Robotics and automation
CNC machines and 3D printers
Medical devices and equipment
Industrial control systems
Home automation and IoT projects
By providing a convenient and efficient way to control stepper motors, the ULN2003 Stepper Motor Driver Module is an essential component in many modern projects and applications.
ULN2003 Stepper Motor Driver Module DocumentationOverviewThe ULN2003 Stepper Motor Driver Module is a widely used driver IC for stepper motors. It's a high-voltage, high-current Darlington transistor array that can drive stepper motors with a maximum voltage of 50V and a maximum current of 1.5A per channel. This module is suitable for a variety of applications, including robotics, CNC machines, and automation systems.PinoutThe ULN2003 Stepper Motor Driver Module has the following pinout:| Pin | Function |
| --- | --- |
| IN1-IN4 | Input pins for stepper motor control signals |
| OUT1-OUT4 | Output pins connected to the stepper motor |
| VCC | Power supply pin (5V-24V) |
| GND | Ground pin |Code Examples### Example 1: Basic Stepper Motor Control using ArduinoThis example demonstrates how to control a stepper motor using the ULN2003 Stepper Motor Driver Module with an Arduino board.Hardware Requirements:Arduino Board (e.g., Arduino Uno)
ULN2003 Stepper Motor Driver Module
Stepper Motor (e.g., NEMA 17)Software Requirements:Arduino IDECode:
```c++
const int stepsPerRevolution = 200; // Change this to your stepper motor's steps per revolution
Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11); // Initialize the stepper motor pinsvoid setup() {
// Set the motor speed (RPM)
myStepper.setSpeed(60);
}void loop() {
// Rotate the motor clockwise
myStepper.step(stepsPerRevolution);
delay(500);// Rotate the motor counterclockwise
myStepper.step(-stepsPerRevolution);
delay(500);
}
```
### Example 2: Half-Step Stepper Motor Control using Raspberry Pi (Python)This example demonstrates how to control a stepper motor using the ULN2003 Stepper Motor Driver Module with a Raspberry Pi board using Python.Hardware Requirements:Raspberry Pi Board (e.g., Raspberry Pi 4)
ULN2003 Stepper Motor Driver Module
Stepper Motor (e.g., NEMA 17)Software Requirements:Raspbian OS
Python 3.xCode:
```python
import RPi.GPIO as GPIO
import time# Set up the GPIO pin numbering mode
GPIO.setmode(GPIO.BCM)# Define the stepper motor pins
motor_pins = [17, 23, 24, 25]# Set up the GPIO pins as outputs
for pin in motor_pins:
GPIO.setup(pin, GPIO.OUT)# Define the half-step sequence
half_steps = [[1, 0, 0, 0],
[1, 1, 0, 0],
[0, 1, 0, 0],
[0, 1, 1, 0],
[0, 0, 1, 0],
[0, 0, 1, 1],
[0, 0, 0, 1],
[1, 0, 0, 1]]try:
while True:
# Rotate the motor clockwise using half-steps
for step in half_steps:
for i in range(len(motor_pins)):
GPIO.output(motor_pins[i], step[i])
time.sleep(0.01)# Rotate the motor counterclockwise using half-steps
for step in reversed(half_steps):
for i in range(len(motor_pins)):
GPIO.output(motor_pins[i], step[i])
time.sleep(0.01)except KeyboardInterrupt:
GPIO.cleanup()
```
Note: These examples are for illustration purposes only and may require modifications for your specific use case. Ensure you understand the underlying principles and adjust the code accordingly.