Motor DC Single Shaft TT DC Gear Motor 1:48

Features:

• Gear Ratio: 1:48
• Low cost and beginner-friendly
• Ideal for small robots and mechanical systems
• Breadboard and terminal block compatible
• Reversible rotation direction

Principle of Work:

When voltage is applied to the motor terminals, a magnetic field is generated inside the motor. This causes the rotor to spin, and through a gear train with a 1:48 ratio, the output shaft turns slowly but with increased torque. The gear reduction mechanism is what enables this motor to perform mechanical tasks efficiently with minimal input current.

Pinout:

How to Connect:

• Red wire → +V (3–6V DC)
• Black wire → GND

Swap the connections to reverse motor direction.

Applications:

• Robotic cars and platforms
• Actuators for levers and doors
• Simple fans and mini pumps
• Educational robotic kits

Circuit Example:

Sample Arduino Code:

// Control motor speed with PWM using a transistor on pin 9
const int motorPin = 9;

void setup() {
  pinMode(motorPin, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  serialSpeed(); // Control speed via Serial Monitor
}

void serialSpeed() {
  int speed;
  Serial.println("Type a speed (0-255) and press enter:");

  while (true) {
    if (Serial.available() > 0) {
      speed = Serial.parseInt();
      speed = constrain(speed, 0, 255);
      Serial.print("Setting speed to ");
      Serial.println(speed);
      analogWrite(motorPin, speed);
    }
  }
}

Hardware Notes:

• Use a 2N2222 transistor to switch the motor
• Use a flyback diode to prevent voltage spikes
• Connect transistor base via 330Ω resistor to Arduino pin

Technical Specifications:

Comparisons: Plastic vs Metal Gears

Resources:

• No additional library is needed to control the motor.
• Ideal for learning PWM and basic motor control with Arduino.