How to Use motor ch n20-3: Examples, Pinouts, and Specs

The Motor CH N20-3, manufactured by Motor (Part ID: TCC1), is a compact DC motor designed for high efficiency and low power consumption. Its small size and reliable performance make it an ideal choice for applications requiring precise motion control in limited spaces. This motor is widely used in small robotics, automation projects, and other applications where compact and efficient actuation is required.

• Small robotics (e.g., robotic arms, mobile robots)
• Automation systems
• DIY electronics projects
• Model vehicles and toys
• Precision mechanisms (e.g., camera gimbals, actuators)

The following table outlines the key technical specifications of the Motor CH N20-3:

The Motor CH N20-3 has two terminals for electrical connections:

Note: The motor's direction of rotation can be reversed by swapping the polarity of the terminals.

1. Power Supply: Connect the motor to a DC power supply within the operating voltage range (3V to 12V). A 6V supply is recommended for optimal performance.
2. Polarity: Ensure the correct polarity of the terminals to achieve the desired direction of rotation. Reversing the polarity will reverse the motor's rotation.
3. Motor Driver: For precise control, use a motor driver (e.g., L298N or L293D) to interface the motor with a microcontroller like an Arduino UNO.
4. PWM Control: Use Pulse Width Modulation (PWM) to control the motor's speed. This can be achieved using a microcontroller's PWM output pin.

• Current Limiting: Ensure the power supply or motor driver can handle the stall current (360 mA) to prevent damage.
• Heat Dissipation: Avoid prolonged operation at stall conditions to prevent overheating.
• Mounting: Secure the motor using appropriate brackets or mounts to minimize vibration and ensure stable operation.
• Noise Suppression: Add a capacitor (e.g., 0.1 µF) across the terminals to reduce electrical noise.

Below is an example of how to control the Motor CH N20-3 using an Arduino UNO and an L298N motor driver:

// Arduino code to control Motor CH N20-3 using PWM
// Connect the motor to the L298N motor driver
// IN1 and IN2 control the motor direction
// ENA controls the motor speed via PWM

#define IN1 7  // Motor driver IN1 pin connected to Arduino pin 7
#define IN2 8  // Motor driver IN2 pin connected to Arduino pin 8
#define ENA 9  // Motor driver ENA pin connected to Arduino PWM pin 9

void setup() {
  pinMode(IN1, OUTPUT); // Set IN1 as output
  pinMode(IN2, OUTPUT); // Set IN2 as output
  pinMode(ENA, OUTPUT); // Set ENA as output
}

void loop() {
  // Rotate motor in one direction
  digitalWrite(IN1, HIGH); // Set IN1 high
  digitalWrite(IN2, LOW);  // Set IN2 low
  analogWrite(ENA, 128);   // Set speed to 50% (PWM value: 128 out of 255)
  delay(2000);             // Run for 2 seconds

  // Stop the motor
  analogWrite(ENA, 0);     // Set speed to 0
  delay(1000);             // Wait for 1 second

  // Rotate motor in the opposite direction
  digitalWrite(IN1, LOW);  // Set IN1 low
  digitalWrite(IN2, HIGH); // Set IN2 high
  analogWrite(ENA, 200);   // Set speed to ~78% (PWM value: 200 out of 255)
  delay(2000);             // Run for 2 seconds

  // Stop the motor
  analogWrite(ENA, 0);     // Set speed to 0
  delay(1000);             // Wait for 1 second
}

1. Motor Does Not Spin

   • Cause: Insufficient power supply or incorrect wiring.
   • Solution: Verify the power supply voltage and current. Check the wiring for proper connections.

2. Motor Spins in the Wrong Direction

   • Cause: Polarity of the terminals is reversed.
   • Solution: Swap the connections to the motor terminals.

3. Motor Overheats

   • Cause: Prolonged operation at stall conditions or excessive load.
   • Solution: Reduce the load on the motor and avoid stalling. Use a heat sink if necessary.

4. Excessive Noise or Vibration

   • Cause: Loose mounting or electrical noise.
   • Solution: Secure the motor properly and add a capacitor across the terminals to suppress noise.

• Can the Motor CH N20-3 be used with a battery? Yes, the motor can be powered by batteries within the operating voltage range (e.g., 4x AA batteries for 6V).

• What is the maximum load the motor can handle? The motor can handle a maximum torque of 0.1 kg·cm at stall conditions. Avoid exceeding this limit to prevent damage.

• Can I control the motor speed without a motor driver? While possible using a variable resistor or direct PWM from a microcontroller, a motor driver is recommended for better control and protection.

• Is the motor waterproof? No, the Motor CH N20-3 is not waterproof. Avoid exposing it to water or moisture.