Published October 24, 2021 © MIT

Virtual ESP32 simulator - light sensor interface-2022

Interface a light sensor (photo sensor) to an ESP32 - Micropython - Embedded systems simulator - #Arduino2022 #EmbeddedSystemsSimulator2022

BeginnerProtip1 hour5,448

Things used in this project

Hardware components

Arduino UNO

Espressif ESP32S

DIYables Jumper Wires

DIYables LDR Light Sensor, Photoresistor, Photocell

DIYables LCD I2C 16x2 Display

Story

Introduction

Virtual ESP32 Simulator provides you a way to keep learning ESP32 programming online. No hardware needed. Wokwi ESP32 simulator supports Arduino style programming as well as Micropython. You will save lot of time, you can program from anywhere. No need to download or install.

This project is about connecting a photo sensor (light sensor) to an ESP32 simulator. The Photo sensor has only three connections - Power, Ground and Data. The data line will change it's state based on the amount of light falling on the sensor. This can be used to several projects including a garage door sensor based on the light or the application where you can turn on lights only during evening, automatically. Let us begin

ESP32 Simulator

The link to the online ESP32

https://wokwi.com/arduino/projects/310595963995554370

The code

#include <LiquidCrystal_I2C.h>
#define LDR_PIN 2
LiquidCrystal_I2C lcd(0x27, 20, 4);
void setup() {
pinMode(LDR_PIN, INPUT);
lcd.init();
lcd.backlight();
}
void loop() {
lcd.setCursor(2, 0);
lcd.print("Question: ");
if (digitalRead(LDR_PIN) == LOW) {
lcd.print("FALSE!");
} else {
lcd.print("TRUE! ");
}
delay(100);
}