SG90 TowerPro Micro Servo Motor - User Guide - Basic Technical Specifications & Arduino Control

Nov 2, 2026

SG90 TowerPro micro servo motor user guide describing a tiny, lightweight servo with approximately 180° rotation and beginner-friendly control. Includes brief data and electrical/mechanical specifications such as analogue modulation, torque at 4.8V, speed, weight, dimensions, motor and gear type, rotation support, pulse width range, and connector type. Provides an Arduino wiring and control setup, including connecting power, ground, and signal wires and using the IDE Servo Sweep example.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages6

Reading Time15 min

AccessFree to download

Technical Overview

Brief Data and Specifications

Mechanical Dimensions

Electrical Control Signal

Application With Arduino

Wiring

Arduino IDE Example

Related Products

| Handson Technology
User Guide

SG90 TowerPro Micro Servo Motor
Tiny and lightweight with high output power. Servo can rotate approximately 180 degrees (90 in each direction), and works just like the standard type but smaller. You can use any servo code, hardware or library to control these servos. Good for beginners who want to make stuff move without building a motor controller with feedback & gear box, especially since it can fit in small places. It comes with a 3 arms and hardware. | | | --- | --- | |
SKU: EMH1140
Brief Data: | | | 􀁸 Modulation: Analogue.
􀁸 Torque @ 4.8V: 25.00 oz-in (1.80 kg-cm) .
􀁸 Speed: @ 4.8V: 0.12 sec/60° .
􀁸 Weight: 0.32oz (9.0 g) .
􀁸 Dimensions: Length:0.91 in (23.0 mm) .
􀁸 Width: 0.48 in (12.2 mm)
􀁸 Height: 1.14 in (29.0 mm)
􀁸 Motor Type: 3-pole
􀁸 Gear Type: Plastic
􀁸 Rotation/Support: Bushing
􀁸 Pulse Width: 500-2400 µs
􀁸 Connector Type: JR
Package Included:
􀁸 1x SG90 TowerPro Servo Motor
􀁸 3x Arms.
􀁸 3x Fixing Screws. | | | 1 [www.handsontec.com](www.handsontec.com) | | | Mechanical Dimensions: | | --- | | | | Electrical Control Signal:

Position "0" (1.5ms pulse) is middle, "90" (~2ms pulse) is middle, is all the way to the right, " -90" (~1ms pulse) is all the way to the left.
| | 2 [www.handsontec.com](www.handsontec.com) | | Application With Arduino:
Circuit:
Servo motors have three wires: power, ground, and signal. The power wire is typically red, and should be connected to the 5V pin on the Arduino board. The ground wire is typically black or brown and should be connected to a ground pin on the board. The signal pin is typically yellow, orange or white and should be connected to pin 9 on the board. | | --- | | | | Open Arduino IDE, go to “File” > “Examples” > “Servo” > “Sweep”. Open the “Sweep” sketch and upload to your Arduino board. Attach a arm to the servo motor, you should see the arm sweeping at 180° to and fro. | | 3 [www.handsontec.com](www.handsontec.com) | | Related Products: | | | --- | --- | | | | | Aluminum Dual Clamping Arm/Horn for Servo Motor | | | 4 [www.handsontec.com](www.handsontec.com) | | | | | [Handsontec](Handsontec.com)[.](Handsontec.com)[com](Handsontec.com)
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In a world of constant change and continuous technological development, a new or replacement product is never far away – and they all need to be tested.
Many vendors simply import and sell wihtout checks and this cannot be the ultimate interests of anyone, particularly the customer. Every part sell on Handsotec is fully tested. So when buying from Handsontec products range, you can be confident you’re getting outstanding quality and value.
We keep adding the new parts so that you can get rolling on your next project. | | | | --- | --- | --- | |
Breakout Boards & Modules

Engineering Material

Power Supply |
Connectors

Mechanical Hardware

Arduino Board & Shield |
Electro-Mechanical Parts

Electronics Components

Tools & Accessory | | 6 [www.handsontec.com](www.handsontec.com) | | |

FAQs

What rotation range does the SG90 TowerPro micro servo provide?

It can rotate approximately 180 degrees total (about 90 degrees in each direction).

How are the SG90 servo control pulses mapped to position?

A 1.5ms pulse corresponds to position “0” (middle). Around 2ms is about “90” (middle to the right) and around 1ms is about “-90” (middle to the left).

How should the SG90 servo be connected to an Arduino for the Sweep example?

Connect power (typically red) to the Arduino 5V pin, ground (typically black or brown) to a ground pin, and the signal wire (typically yellow/orange/white) to pin 9. Then open Arduino IDE “File” > “Examples” > “Servo” > “Sweep”, upload, and observe the arm sweeping.

Nov 2, 2026

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