Published May 21, 2017

Automatic Brightness Sensor

This small tool checks brightness, and if there is fog or night out, will turn on without human action or worry.

BeginnerShowcase (no instructions)12 minutes8,176

Things used in this project

Hardware components

Arduino UNO

Resistor 221 ohm

Photo resistor

LED (generic)

Seeed Studio Grove - Relay

Software apps and online services

Arduino IDE

Story

First, I m working on a project that needs light. I thought about a small tool to resolve these issue, and I made this one. With auto brightness, if there is fog or dark or night, it will turn on automatically. I use it to turn on my car lights automatically, because usually in the city there is lights and I always forgot about turning on lights. I'll add these tools to my car, and my house lights, especially some places in the garden for example. I found it to be a useful tool, and I will integrate it to my future projects.

OUKHEIR Achraf

Code

Code

//OUKHEIR Achraf
const int LumPin = A0;    // select the input pin for Senosr
const int RidPin1 = 9;      // select the pin for Rideaux
const int RidPin2 = 8;      // select the pin for Rideaux
int LumValue = 0;  // variable to store the value coming from the sensor
int SiLum =0 ; //Etat rideau 0
void setup() {
  // declare the ledPin as an OUTPUT:
  pinMode(RidPin1, OUTPUT);
  pinMode(LumPin, INPUT);
  Serial.begin(9600);
}

void loop() {
 Serial.print("Luminoste value = ");
Serial.println(ReadLum());

SiLum= LightDark();
if(SiLum==1){
   Rideaux1(1);
}else {
  Rideaux1(0);
}

delay(1000);
}


//fonction de Luminosite read
int ReadLum(){
LumValue =analogRead(LumPin);
delay(100);
  return  LumValue;
}

//fonction de check Luminosite
int LightDark(){
 //check ifDark or light
  if ( LumValue  < 28) {
    // turn  on:
    digitalWrite(RidPin1, HIGH);
    return 1; 
  } else  if ( LumValue  >33){
    // turn  off:
    digitalWrite(RidPin1, LOW);
  
  return 0;
  }
  
}

//fonction de Rideau
int Rideaux1(int act){
  if(act==1){
    digitalWrite(RidPin1, HIGH);
  return 1;
  }else{
  digitalWrite(RidPin1, LOW);
  return 0;
  }
  }
//OUKHEIR Achraf