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Rohith ND
Rohith ND

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Analog Input using Arduino

In this blog, I will show you how to create an analog input using Arduino.

analog input

Components required

  • Arduino UNO
  • Potentiometer

Arduino UNO

Arduino is an opensource electronics platform based on easy-to-use hardware and software. Arduino boards are able to read inputs - light on a sensor , a finger on a button , or a twitter message - and turn it into an output - activating a motor , turning on a LED , publishing something online. To do so use the Arduino programming language (based on wiring) and the Arduino Software (IDE) based on processing.


A three-terminal resistor with a sliding or revolving contact that creates a variable voltage divider is called a potentiometer. It functions as a variable resistor or rheostat if only the wiper and one end of the connector are used.


int sensorPin = A0;    // select the input pin for the potentiometer
int ledPin = 13;      
int sensorValue = 0;  
void setup() {
pinMode(ledPin, OUTPUT);
void loop() {
  sensorValue = analogRead(sensorPin);
  digitalWrite(ledPin, HIGH);
  digitalWrite(ledPin, LOW);
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