SG90 Micro Servo


The SG90 Micro Servo [Product Link] from TowerPro [Link] is an ideal servo motor for Pan-Tilt assembly and application which require 180 degree motion and not much torque.

Technical Specs

SG90 Micro Servo by TowerPro
SG90 Micro Servo by TowerPro
  • Plastic Gears
  • Operating Voltage: 4.8V
  • Stall Torque: 1.8 kg*cm (4.8V)
  • Rotational Range: 180°
  • Analog Modulation
  • Operational Speed: 0.1sec/60°(4.8V)
  • Pulse Width: 500-2400µs
  • Rotation: Bushing
  • Temperature Range: 0°C-55°C
  • Weight: 9.0g
  • Dimensions (lxwxh): 23*12.2*29mm


This servo motor finds many applications in areas which require a 180 motion of light weight objects. Highly used in many robotic projects that require Pan-Tilt mechanisms for Cameras [Product Link], Ultrasonic Sensors [Product link] etc. This motor can also be used to make light weight and small-sized bipeds, humanoids, spiders (6- or 8- legged), robot hand, robot arm and other similar applications.

This motor has 3 pins- middle wire (red) connects to Vcc, brown wire connects to GND, and yellow wire is signal which is to be connected to the digital pin of the arduino board.

It is usually a good idea to power the motors from an external power source and not directly from the arduino board. When powering the motor from the external source, it is important to remember to create a common ground, by connecting the GND of the source with the GND pin of the Arduino board.

// Code by Jasmeet Singh for
#include <Servo.h>
Servo jservo;  // create servo object to control a servo
// a maximum of eight servo objects can be created

void setup()
jservo.attach(2);  // connects the servo on digital pin 2 to the servo object

void loop()

Possible Application Areas

Some applications using this product are:
1. Spider Robot [Link].
2. Object Detecting Robot [Link].
3. Line Follower with Object Detecting Robot [Link].
4. Humanoid Robot [Link].
5. Biped Robot [Link].

Did you create a project using this product? Leave details/links below!


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