Electronics

Servo Motor Micro SG90 9G

AED 9.95

1

Description

The TowerPro SG90 9G servo motor is a small, lightweight, and affordable electromechanical device that converts electrical signals into precise rotational movement. It has a torque of approximately 1.5kg/cm and a speed of around 0.1s/60 degrees, making it ideal for use in RC planes, robotics, and other small-scale projects that require precise and responsive control. It operates on a voltage range of 4.8-6V and has a weight of 9g.

Package Includes:

  • 1 x TowerPro SG90 9G servo motor

Features:

  • Small and compact size
  • Affordable and widely available
  • Reliable and high-quality construction
  • Torque rating of approximately 1.5kg/cm
  • Speed of around 0.1s/60 degrees
  • Operating voltage range of 4.8-6V
  • Weight of just 9g
  • Accurate and precise control of rotational movement
  • Versatile and widely used in a range of applications, such as robotics and RC planes
  • Durable and able to withstand frequent use and wear and tear

Description:

The TowerPro SG90 9G servo motor is a popular and widely used micro-sized servo motor that is known for its compact size, affordability, and reliable performance. It is commonly used in a variety of applications such as robotics, RC planes, and small-scale projects that require accurate and precise control of rotational movement. This servo motor has a torque rating of approximately 1.5kg/cm and a speed of around 0.1s/60 degrees, which allows it to provide a high degree of accuracy and responsiveness. It operates within a voltage range of 4.8-6V and has a weight of just 9g, making it easy to integrate into a wide range of projects and designs.

Principle of Work:

The working principle of the TowerPro SG90 9G servo motor is based on the use of a small DC motor and a feedback control system. The motor is connected to a series of gears that convert the rotational motion of the motor into a rotational output at the servo arm. The position of the servo arm is controlled by an input signal sent to the motor controller, which adjusts the current flowing through the motor based on the feedback signal from the potentiometer, allowing for precise control of the servo arm position. When a PWM signal is sent to the servo motor, it rotates to a specific position and holds that position until a new PWM signal is received. By changing the pulse width of the PWM signal, the servo motor can be positioned at any angle within its range of motion, typically 0-180 degrees.

Pinout of the Module:

  • Signal (Yellow): Input signal pin for controlling the position of the servo motor through PWM.
  • VCC (Red): Positive power supply pin for the servo motor, typically connected to +5V or another voltage source within the specified operating voltage range.
  • GND (Brown): Ground pin for the servo motor, typically connected to the ground of the power supply.

Applications: 

  • Robotics: The SG90 is commonly used in hobbyist and educational robotics projects to control the movement of arms, legs, and other moving parts.
  • RC Vehicles: The SG90 is often used in remote-controlled cars, planes, and boats to control the motion of steering wheels, control surfaces, and other movable components.
  • Small-Scale Projects: The compact size and precise control of the SG90 make it a popular choice for small-scale projects, such as model trains, animatronics, and other electronic devices.
  • Camera Gimbals: The SG90 is also commonly used in camera gimbals and other stabilization systems to provide precise control of camera positioning.
  • Medical Devices: The SG90 is used in various medical devices, such as surgical robots, to control the movement of specialized tools.
  • Industrial Automation: The SG90 is also used in various industrial automation applications, such as conveyor systems and assembly lines, where precise control of mechanical components is required.

Circuit:

  • Connect the red wire (VCC) of the servo motor to the 5V pin on the Arduino board.
  • Connect the brown wire (GND) of the servo motor to the GND pin on the Arduino board.
  • Connect the white wire (Signal) of the servo motor to digital pin 5 on the Arduino board.

Library:

The servo.h library is already installed in Arduino IDE

Code:  

#include "Servo.h"
Servo myservo;
void setup() {
 myservo.attach(5); // Attach servo to pin 5
}
void loop() {
 myservo.write(0); // Set servo position to 0 degrees
 delay(1000); // Wait for 1 second
 myservo.write(90); // Set servo position to 90 degrees
 delay(1000); // Wait for 1 second
 myservo.write(180);// Set servo position to 180 degrees
 delay(1000); // Wait for 1 second
}

This example code simply moves the servo motor to three different positions (0, 90, and 180 degrees) with one-second intervals using the write() function of the Servo library. Note that the specific pin number used to connect the signal wire can be changed in the myservo.attach() line of the code to match the pin number you are using.

Technical Details:

  • Operating Voltage: 4.8-6V (typically +5V)
  • Torque: 2.5kg/cm
  • Operating Speed: 0.1s/60°
  • Gear Type: Plastic
  • Rotation Range: 0°-180°
  • Weight: 9g
  • Dimensions: 22.8 x 12.2 x 28.5mm
  • Dead Band Width: 10us
  • Temperature Range: 0°C to 55°C
  • Control System: PWM (Pulse Width Modulation) signal
  • Connector Type: JR/Futaba compatible

Resources:

Comparisons:

The SG92R is another popular micro servo motor that is often compared to the TowerPro SG90. Here are some key differences between the SG90 and SG92R:

  1. Torque: The SG92R has a slightly higher torque than the SG90, with a maximum torque of 2.5 kg/cm compared to 2.2 kg/cm for the SG90. This can make the SG92R better suited for applications that require more force.
  2. Operating Voltage: The SG92R has a wider operating voltage range than the SG90, with a typical range of 4.8V-6.0V compared to the SG90's typical range of +5V. This can make the SG92R more versatile and compatible with a wider range of power supplies.
  3. Gear Type: The SG92R has metal gears, while the SG90 typically has plastic gears. This can make the SG92R more durable and better able to withstand wear and tear over time.
  4. Size: The SG92R is slightly smaller and lighter than the SG90, with a weight of around 9g compared to the SG90's weight of 14g. This can make the SG92R more suitable for smaller or more compact applications.