SG90 Servo

SG90 Micro Servo Motor

The SG90 is a lightweight, small-size servo motor widely used in robotics, RC vehicles, hobby electronics, and DIY projects.

It provides precise angular control (0°–180°) using a standard PWM signal, making it perfect for steering mechanisms, robotic arms, camera mounts, and animatronics.

This micro servo is easy to interface with microcontrollers such as Arduino, ESP32, STM32, and Raspberry Pi.

✨ Key Features

✅ Operating voltage: 4.8 – 6V
✅ PWM control (0°–180° rotation)
✅ Lightweight & compact (≈9g)
✅ Standard 3-pin connector
✅ Metal/plastic gears (depending on variant)
✅ Compatible with Arduino, Raspberry Pi, and microcontrollers
✅ Low-cost and beginner-friendly

📊 Technical Specifications
Parameter Typical Value
Type Micro Servo Motor
Operating Voltage 4.8 – 6V DC
Stall Torque ~1.8 kg·cm @ 4.8V
Speed ~0.1 s / 60° @ 4.8V
Rotation Angle 0° – 180°
Weight ~9 g
Dimensions 22.8 × 12.2 × 29 mm
Connector 3-pin (PWM)
Gear Type Plastic (SG90) / Metal variant (MG90)
📍 Pin Configuration

Standard 3-pin connector:

Pin Color Function
VCC Red Power supply (4.8–6V)
GND Brown / Black Ground
Signal Orange / Yellow PWM control signal
🔌 Basic Wiring (Arduino Example)
SG90 Pin Arduino Pin
VCC 5V
GND GND
Signal Digital PWM pin (e.g., D9)
Example Arduino Code
#include <Servo.h>

Servo myServo;
int angle = 0;

void setup() {
myServo.attach(9); // PWM pin
}

void loop() {
for(angle = 0; angle <= 180; angle++) {
myServo.write(angle);
delay(15);
}
for(angle = 180; angle >= 0; angle--) {
myServo.write(angle);
delay(15);
}
}

⚙️ Applications

Perfect for:

🤖 Small robotics (arms, legs, wheels)

🚗 RC car steering

🎨 Animatronics & model figures

📷 Pan/tilt camera mounts

🧪 Educational electronics projects

⭐ Quick Summary

👉 Type: Micro Servo Motor
👉 Rotation: 0°–180°
👉 Voltage: 4.8–6V
👉 Torque: ~1.8 kg·cm
👉 Control: PWM (Arduino compatible)
👉 Weight: 9 g