![]() ![]() The SG90 servo motor usually comes with a 3-pin connector that makes it easy to connect to a control circuit or microcontroller.The pins typically include ground (Brown wire), power supply (Red wire), and the control signal (Orange wire). SG90 Micro servo motor specification: Operating Voltage ![]() The SG90 micro servo motor is the one used in this tutorial, it is the one shown below with horns and screws: The most used hobby servo motors are: SG90 Micro Servo and MG996R Servo. It is commonly used in applications that require accurate and controlled motion, such as robotics, CNC machines, and industrial automation. We’ll also see the simulation of Arduino UNO board with a typical servo motor using Labcenter Electronics Proteus circuit simulation software.Ī servo motor is a type of electric motor that is designed for precise control of position, velocity, and acceleration. we start the function by attaching the servo object created to pin D8 of the microcontroller, after which we center the servo, turning it to zero degrees.In this tutorial we will see how do servo motors work and how to control a small size hobby servo motor with Arduino development board. With this done, we proceed to the void setup() function. Next, we create an object of the library, to be used as a reference for controlling our servo motor throughout the code. We start the code for the project by including the libraries that we will use which in this case is the servo.h library. The library comes pre-installed in the Arduino IDE removing the need for us to download and install. The library makes it easy to turn the servo at different angles using a single command. ![]() The code for this project is quite easy thanks to the very comprehensive and concise servo.h library developed by the Arduino team to facilitate the use of servo motors in Arduino projects. With the connection all done, we can now proceed to write the code for the project. Servo directions are sent from the microcontroller to the servo motor as PWM pulses. The signal pin was connected to the digital pin 8 of the Arduino because it is a PWM pin. Schematicsįor emphasis, the connection is further described below. The Signal pin is the one used to feed the control signal from the microcontroller to the servo, to get the servo rotate to a particular angle.Ĭonnect the Servo to the Arduino as shown in the schematics below. Servo motors generally have three pins/wires, this includes the VCC, GND, and the Signal pin. The schematics for this project is quite simple as we will be connecting just the servo motor to the Arduino. The following components are required to build this project:Įach of these components can be bought via the link attached to them. Since we will be using just one servo in this tutorial its fine to power it with an Arduino. Servo’s have high current requirement so when using more than one servo motor with the Arduino, it is important to connect their power connections to an external power supply as the Arduino may not be able to source the current needed for the servo. For this tutorial, we will be using the popular SG90 servo motor and our goal will be to rotate the servo motor from one end to the other. ![]()
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