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Servo Motor Micro SG90 9G

Servo Motor Micro SG90 9G

The SG90 9G micro servo motor is a compact, lightweight, and cost-effective electromechanical device that converts electrical signals into precise rotational movement. Manufactured in China, it is widely used in hobby electronics, robotics, RC models, and DIY automation projects. With a torque of up to 2.5kg/cm, an operating speed of approximately 0.1s/60°, and a 4.8V-6V operating voltage, it provides smooth and accurate position control while weighing only 9g.

Package Includes:

  • 1 x SG90 9G Micro Servo Motor
Small Servo
13.50 AED 13.50 AED (Tax included)

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Features:

  • Compact and lightweight 9g design
  • Manufactured in China
  • Cost-effective solution for hobby and DIY projects
  • Reliable plastic gear construction
  • Maximum torque up to 2.5kg/cm
  • Fast operating speed of approximately 0.1s/60°
  • Operating voltage range of 4.8V-6V
  • Accurate PWM position control
  • 180° rotation range
  • Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, and other microcontrollers
  • Suitable for robotics, RC models, automation, and educational projects

 

Principle of Work:

The SG90 servo operates using a small DC motor, a reduction gear train, a control circuit, and an internal potentiometer. A PWM signal from a microcontroller determines the desired shaft position. The internal control circuit continuously compares the requested position with the actual position measured by the potentiometer and drives the motor until both positions match. Once the desired angle is reached, the servo actively holds its position until a new PWM signal is received.

Pinout:

  • Signal (Orange/Yellow/White): PWM control input from the microcontroller.
  • VCC (Red): Positive power supply (4.8V-6V, typically +5V).
  • GND (Brown/Black): Ground connection.

Applications:

  • Educational and hobby robotics
  • Robot arms and grippers
  • RC airplanes, cars, boats, and other RC models
  • Pan-tilt camera systems
  • Animatronics and moving displays
  • Smart home and automation projects
  • STEM education and training kits
  • DIY electronic projects requiring precise angular control

Circuit:

  • Connect the red wire (VCC) to the Arduino 5V pin.
  • Connect the brown wire (GND) to Arduino GND.
  • Connect the signal wire to Arduino digital pin 5.

Library:

The Servo.h library is included with the Arduino IDE.

Code:

#include "Servo.h"
Servo myservo;
void setup() {
 myservo.attach(5);
}
void loop() {
 myservo.write(0);
 delay(1000);
 myservo.write(90);
 delay(1000);
 myservo.write(180);
 delay(1000);
}

This example demonstrates basic servo control by moving the servo shaft to 0°, 90°, and 180° with one-second delays. The signal pin can be changed by modifying the value passed to myservo.attach().

Technical Details:

  • Product Type: SG90 9G Micro Servo Motor
  • Country of Manufacture: China
  • Operating Voltage: 4.8V-6V (5V recommended)
  • Torque: Up to 2.5kg/cm
  • Operating Speed: Approximately 0.1s/60°
  • Gear Type: Plastic
  • Rotation Range: Approximately 180°
  • Control Signal: PWM
  • Weight: 9g
  • Dimensions: 22.8 × 12.2 × 28.5mm
  • Dead Band Width: 10μs
  • Operating Temperature: 0°C to 55°C
  • Connector Type: JR/Futaba Compatible

Resources: