Arduino DIY LED Control with LDR Sensor (Photoresistor)

1/*Inventor DIY Inventor (Krishna Agarwal)
2Desingner DIY Inventor (Krishna   Agarwal)
3Codder DIY Inventor (Krishna Agarwal)
4*/
5
6//set pin numbers
7//const   won't change
8const int ledPin = 12;   //the number of the LED pin
9const int   ldrPin = A0;  //the number of the LDR pin
10
11
12void setup() {
13
14  Serial.begin(9600);
15   pinMode(ledPin, OUTPUT);  //initialize the LED pin as an output
16  pinMode(ldrPin,   INPUT);   //initialize the LDR pin as an input
17}
18
19void loop() {
20  int   ldrStatus = analogRead(ldrPin);   //read the status of the LDR value
21
22  //check   if the LDR status is <= 500
23  //if it is, the LED is HIGH
24Serial.println(ldrStatus);
25/*Inventor   DIY Inventor (Krishna Agarwal)
26Desingner DIY Inventor (Krishna Agarwal)
27Codder   DIY Inventor (Krishna Agarwal)
28*/
29   if (ldrStatus <=80) {
30
31    digitalWrite(ledPin,   HIGH);               //turn LED on
32
33   }
34  else {
35
36    digitalWrite(ledPin,   LOW);          //turn LED off
37  }
38}
39

1/*Inventor DIY Inventor (Krishna Agarwal)
2Desingner DIY Inventor (Krishna  Agarwal)
3Codder DIY Inventor (Krishna Agarwal)
4*/
5
6//set pin numbers
7//const  won't change
8const int ledPin = 12;   //the number of the LED pin
9const int  ldrPin = A0;  //the number of the LDR pin
10
11
12void setup() {
13
14  Serial.begin(9600);
15  pinMode(ledPin, OUTPUT);  //initialize the LED pin as an output
16  pinMode(ldrPin,  INPUT);   //initialize the LDR pin as an input
17}
18
19void loop() {
20  int  ldrStatus = analogRead(ldrPin);   //read the status of the LDR value
21
22  //check  if the LDR status is <= 500
23  //if it is, the LED is HIGH
24Serial.println(ldrStatus);
25/*Inventor  DIY Inventor (Krishna Agarwal)
26Desingner DIY Inventor (Krishna Agarwal)
27Codder  DIY Inventor (Krishna Agarwal)
28*/
29   if (ldrStatus <=80) {
30
31    digitalWrite(ledPin,  HIGH);               //turn LED on
32
33   }
34  else {
35
36    digitalWrite(ledPin,  LOW);          //turn LED off
37  }
38}
39