LDR Sensor & Arduino using Tinkercad

In this video, we will see the interfacing of Light Dependent Resistor (LDR) Sensor or Photo-resistor with Arduino in Tinkercad.

#ldrsensor #arduino #tinkercad #photoresistor

[sinforoso]

Excellent video, helped a lot!
Heres the code he uses:

const int LEDPin = 13;
const int LDRPin = A0;

void setup()
{
Serial.begin(9600);
pinMode(LEDPin, OUTPUT);
pinMode(LDRPin, INPUT);
}

void loop()
{

int LDRStatus = analogRead(LDRPin);

if (LDRStatus <= 500)
{
digitalWrite(LEDPin, HIGH);
Serial.println(LDRStatus);

}
else
{
Serial.println(LDRStatus);
digitalWrite(LEDPin, LOW);
}
}

[allan]

why do you need to add resistor to the grounded cable/wiring?