How to Use Tower Pro MG995 DIGI HI-SPEED Servo Moto: Examples, Pinouts, and Specs

The Tower Pro MG995 DIGI HI-SPEED Servo Motor is a high-torque digital servo motor renowned for its precision, speed, and reliability. It is widely used in robotics, remote-controlled (RC) vehicles, drones, and other applications requiring precise angular motion. With its metal gear construction and digital control circuitry, the MG995 offers durability and consistent performance, making it a popular choice for hobbyists and professionals alike.

• Robotics (e.g., robotic arms, humanoid robots)
• RC vehicles (e.g., cars, boats, planes)
• Drones and UAVs
• Automated systems requiring angular positioning
• Pan-tilt camera systems

Below are the key technical details of the Tower Pro MG995 Servo Motor:

The MG995 servo motor has a 3-pin connector for interfacing with a microcontroller or power source. The pinout is as follows:

1. Power Supply: Connect the red wire to a power source (4.8V to 7.2V). Ensure the power supply can provide sufficient current (at least 2A) to handle the motor's peak load.
2. Ground: Connect the brown wire to the ground (GND) of your circuit.
3. Signal: Connect the orange wire to the PWM output pin of your microcontroller (e.g., Arduino).

• Power Requirements: Use a separate power supply for the servo motor to avoid voltage drops or interference with the microcontroller.
• PWM Signal: Ensure the PWM signal is within the specified range (500 µs to 2500 µs) to avoid damaging the servo.
• Mounting: Secure the servo motor properly to prevent vibrations or misalignment during operation.
• Overloading: Avoid exceeding the torque rating to prevent overheating or damage to the motor.

Below is an example code to control the MG995 servo motor using an Arduino UNO:

#include <Servo.h> // Include the Servo library

Servo myServo; // Create a Servo object to control the MG995

void setup() {
  myServo.attach(9); // Attach the servo to pin 9 on the Arduino
  // Ensure the pin supports PWM output
}

void loop() {
  myServo.write(0); // Move the servo to 0 degrees
  delay(1000); // Wait for 1 second

  myServo.write(90); // Move the servo to 90 degrees
  delay(1000); // Wait for 1 second

  myServo.write(180); // Move the servo to 180 degrees
  delay(1000); // Wait for 1 second
}

• Use a capacitor (e.g., 100 µF) across the power supply terminals to stabilize voltage.
• Avoid sudden changes in angle to reduce stress on the motor.
• Test the servo with a low load before integrating it into your project.

1. Servo Not Moving

   • Cause: Incorrect wiring or insufficient power supply.
   • Solution: Verify the wiring and ensure the power supply meets the voltage and current requirements.

2. Servo Jittering

   • Cause: Electrical noise or unstable power supply.
   • Solution: Add a capacitor across the power supply terminals and ensure proper grounding.

3. Overheating

   • Cause: Prolonged operation under high torque or incorrect PWM signal.
   • Solution: Reduce the load on the servo and verify the PWM signal is within the specified range.

4. Limited Range of Motion

   • Cause: PWM signal out of range or mechanical obstruction.
   • Solution: Check the PWM signal and ensure there are no physical obstructions.

Q: Can I power the MG995 directly from the Arduino?
A: It is not recommended, as the Arduino cannot supply sufficient current for the servo motor. Use an external power supply.

Q: What is the maximum angle the MG995 can rotate?
A: The MG995 can rotate up to 180° when provided with the correct PWM signal.

Q: Can I use the MG995 for continuous rotation?
A: No, the MG995 is designed for positional control, not continuous rotation. For continuous rotation, use a modified servo or a dedicated continuous rotation motor.

Q: How do I prevent the servo from drawing too much current?
A: Use a current-limiting resistor or a motor driver circuit to manage the current draw.

By following this documentation, you can effectively integrate the Tower Pro MG995 DIGI HI-SPEED Servo Motor into your projects and troubleshoot common issues with ease.