Drone Accessories, Electronics accessories, Motors

Servo SG90 9g 180 Degree

(3 customer reviews)

In stock


Short Info

  • Operating Voltage is +5V typically
  • Torque: 2.5kg/cm
  • Rotation : 0°-180°

රු450.00 රු650.00

In stock

or 3 X රු 150.00 with Koko Koko

Servo SG90 9g 180 Degree

Wire Configuration

Wire Number Wire Colour Description
1 Brown Ground wire connected to the ground of system
2 Red Powers the motor typically +5V is used
3 Orange PWM signal is given in through this wire to drive the motor

TowerPro SG-90 Features

  • Operating Voltage is +5V typically
  • Torque: 2.5kg/cm
  • Operating speed is 0.1s/60°
  • Gear Type: Plastic
  • Rotation : 0°-180°
  • Weight of motor : 9gm
  • Package includes gear horns and screws

Selecting your Servo Motor

There are lots of servo motors available in the market and each one has its own specialty and applications. The following two paragraphs will help you identify the right type of servo motor for your project/system.

Next comes the most important parameter, which is the torque at which the motor operates. Again there are many choices here but the commonly available one is the 2.5kg/cm torque which comes with the Towerpro SG90 Motor. This 2.5kg/cm torque means that the motor can pull a weight of 2.5kg when it is suspended at a distance of 1cm. So if you suspend the load at 0.5cm then the motor can pull a load of 5kg similarly if you suspend the load at 2cm then can pull only 1.25. Based on the load which you use in the project you can select the motor with proper torque. The below picture will illustrate the same.

Servo SG90 9g 180 Degree


How to use a Servo Motor

After selecting the right Servo motor for the project, comes the question how to use it. As we know there are three wires coming out of this motor. The description of the same is given on top of this page. To make this motor rotate, we have to power the motor with +5V using the Red and Brown wire and send PWM signals to the Orange colour wire. Hence we need something that could generate PWM signals to make this motor work, this something could be anything like a 555 Timer or other Microcontroller platforms like Arduino, PIC, ARM or even a microprocessor like Raspberry Pie. Now, how to control the direction of the motor? To understand that let us a look at the picture given in the datasheet.

how to use servo motor

From the picture we can understand that the PWM signal produced should have a frequency of 50Hz that is the PWM period should be 20ms. Out of which the On-Time can vary from 1ms to 2ms. So when the on-time is 1ms the motor will be in 0° and when 1.5ms the motor will be 90°, similarly when it is 2ms it will be 180°. So, by varying the on-time from 1ms to 2ms the motor can be controlled from 0° to 180°



  • Used as actuators in many robots like Biped Robot, Hexapod, robotic arm etc..
  • Commonly used for steering system in RC toys
  • Robots where position control is required without feedback
  • Less weight hence used in multi DOF robots like humanoid robots


SG90 Servo Motor Dimensions

Servo Motor Dimensions

Data Sheet of 9G Servo motor –https://components101.com/sites/default/files/component_datasheet/SG90%20Servo%20Motor%20Datasheet.pdf

Based on 3 reviews

5.0 overall

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  1. Vishva

    Super service, thanz Lk tronics………servo moters are in good condition…best price…😍😍😍😍keep on…


    • M.Coolsoul

      Thank you Vishva, Happy to trade with a Genuine Customer like you !


  2. Chamath SL

    Best Servo motors, Quick Delivery, Thank you LK-Tronics !!!!

    Chamath SL

    • M.Coolsoul

      Thanks Chamath


  3. Sahan Abewardhena

    Resonable price.good product

    Sahan Abewardhena