Arduino - Servo Motor Controlled By Potentiometer

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Arduino Code

/* * Created by ArduinoGetStarted.com * * This example code is in the public domain * * Tutorial page: https://arduinogetstarted.com/tutorials/arduino-servo-motor-controlled-by-potentiometer */ #include <Servo.h> Servo myServo; // create servo object to control a servo void setup() { // initialize serial communication at 9600 bits per second: Serial.begin(9600); myServo.attach(9); // attaches the servo on pin 9 to the servo object } void loop() { // reads the value of the potentiometer (value between 0 and 1023) int analogValue = analogRead(A0); // scales it to use it with the servo (value between 0 and 180) int angle = map(analogValue, 0, 1023, 0, 180); // sets the servo position according to the scaled value myServo.write(angle); // print out the value Serial.print("Analog: "); Serial.print(analogValue); Serial.print(", Angle: "); Serial.println(angle); delay(100); }

Quick Steps

  • Connect Arduino to PC via USB cable
  • Open Arduino IDE, select the right board and port
  • Copy the above code and open with Arduino IDE
  • Click Upload button on Arduino IDE to upload code to Arduino
Arduino IDE Upload Code
  • Open Serial Monitor
  • Rotate the potentiometer
  • See the servo motor's rotation
  • See the result on Serial Monitor
COM6 Send Analog: 0, Angle: 0 Analog: 85, Angle: 14 Analog: 201, Angle: 35 Analog: 286, Angle: 50 Analog: 370, Angle: 65 Analog: 444, Angle: 78 Analog: 521, Angle: 91 Analog: 608, Angle: 106 Analog: 690, Angle: 121 Analog: 793, Angle: 139 Analog: 907, Angle: 159 Analog: 1023, Angle: 180 Analog: 1023, Angle: 180 Autoscroll Show timestamp Clear output 9600 baud   Newline  

Code Explanation

Read the line-by-line explanation in comment lines of source code!

Tag » Arduino Sg90 Potentiometer