Connecting the second sensor

Last updated on 2023-04-10 | Edit this page

Overview

Questions

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Objectives

  • Objective

Connecting a light level sensor

ToDo

Explain how to connect the resistors according to image below

Light Level with a Light Dependent Resistor (LDR)
Light Level with a Light Dependent Resistor (LDR)

C 

#define LIGHT_SENSOR_PIN 32 // ESP32 pin GIOP36 (ADC0)

const int readingdelay = 3000;

void setup() {
  Serial.begin(9600); // initialize serial
  Serial.println(F("Starting ..."));
}

void loop() {

  int lightlevel = analogRead(LIGHT_SENSOR_PIN);     // read light level
  Serial.print("Light: ");
  Serial.println(lightlevel);

  // wait a 3 seconds between readings
  delay(readingdelay);
}

Explanation of the code

Key Points

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