1203B PWM 6V 12V 24V 28V 3Amp DC Motor Speed Regulator

Description

The 1203B PWM 6V 12V 24V 28V 3Amp DC Motor Speed Regulator is a high-grade, precision-tested electronic component designed for reliable performance in prototyping, education, industrial control, and custom hardware engineering.

🔹 Key Features

• •By varying the duty cycle of the PWM signal, the controller provides smooth and efficient motor speed adjustment without significant power loss
• •As a result, users can easily control motor speed according to project requirements
• •Because of its PWM control method, the module maintains excellent torque even at lower speeds
• •Furthermore, it offers higher efficiency compared to traditional resistive speed control methods, reducing heat generation and power consumption
• •The onboard rotary potentiometer allows precise speed adjustment from 0% to 100%, enabling accurate control of motor performance
• •Moreover, the compact PCB design simplifies installation in space-constrained projects

🔹 Technical Specifications

🔹 Pin Configuration & Wiring

// Safe Motor & Air Pump PWM Speed Control using L298N Driver
// Tested for Arduino Uno & ESP32 (with ESP32 ledcWrite)

#define ENA_PIN 9   // Connect to L298N ENA (PWM speed control)
#define IN1_PIN 8   // Connect to L298N IN1 (Direction / ON)
#define IN2_PIN 7   // Connect to L298N IN2 (Direction / OFF)

void setup() {
  pinMode(ENA_PIN, OUTPUT);
  pinMode(IN1_PIN, OUTPUT);
  pinMode(IN2_PIN, OUTPUT);
  
  // Initialize driver in OFF state
  digitalWrite(IN1_PIN, LOW);
  digitalWrite(IN2_PIN, LOW);
  analogWrite(ENA_PIN, 0);
}

void loop() {
  // Soft start: ramp up speed to prevent inrush current spikes
  digitalWrite(IN1_PIN, HIGH);
  digitalWrite(IN2_PIN, LOW);
  
  for (int speed = 100; speed <= 255; speed += 15) {
    analogWrite(ENA_PIN, speed);
    delay(50);
  }
  
  delay(3000); // Run motor at full speed for 3 seconds
  
  // Coast to stop
  digitalWrite(IN1_PIN, LOW);
  digitalWrite(IN2_PIN, LOW);
  analogWrite(ENA_PIN, 0);
  
  delay(2000); // Pause for 2 seconds
}

🔹 Applications

This component is engineered and suitable for:

• •DC motor speed regulation and soft start control
• •Robotics drive train and wheel speed adjustment
• •Cooling fans, exhaust blowers, and thermal management
• •Miniature water pumps and aquarium aeration systems
• •DIY electronics projects, automation circuits, and laboratory benches

🔹 Package Includes

• ✓1 × 1203B PWM 6V 12V 24V 28V 3Amp DC Motor Speed Regulator