Daylight-detecting Outdoor Light

This circuit turns a light on or off depending on how bright its surroundings are. This can be used as a daylight-sensitive outdoor light.

Aug 17, 2021

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1549 views

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3 respects

environmental sensing

lights

Components and supplies

Power splitter to multiple AC outlets

Male/Female Jumper Wires

Relay Module (Generic)

Photo resistor

Arduino UNO

LED (generic)

LED Light Bulb, Frosted GLS

Resistor 1k ohm

Switch Actuator, APEM A01 series Illuminated Push-Button Switches

Jumper wires (generic)

9V DC Power Supply for Motherboard

Apps and platforms

Arduino IDE

Project description

Code

Photocell Project Code

c_cpp

1#define photoresistor 0
2#define MorA 8
3#define modeBtn 4
4#define  toggleBtn 5
5#define led 2
6
7int mode = 0; // 0 is Auto, 1 is Manual
8int  on = 1;
9
10void setup() {
11  pinMode(modeBtn, INPUT_PULLUP);
12  pinMode(toggleBtn,  INPUT_PULLUP);
13  pinMode(led, OUTPUT);
14  pinMode(MorA, OUTPUT);
15  Serial.begin(9600);
16}
17
18void  loop() {
19  int light = analogRead(photoresistor);
20  
21  if (digitalRead(modeBtn)  == LOW){
22    mode += 1;
23    mode = mode % 2;
24    if (mode == 0){
25      Serial.println("Auto");
26      digitalWrite(MorA, LOW);
27    }
28    if (mode == 1){
29      Serial.println("Manual");
30      analogWrite(MorA, 150);
31    }
32    delay(1000);
33  }
34
35  if (mode  == 0) {
36    if (light < 300) {
37      digitalWrite(led, LOW);
38    }
39    else {
40      digitalWrite(led, HIGH);
41    }  
42  }
43
44  if (mode  == 1) {
45    if (digitalRead(toggleBtn) == LOW){
46      on += 1;
47      on  = on % 2;
48      if (on == 0){
49        Serial.println("OFF");
50        digitalWrite(led,  HIGH);
51      }
52      if (on == 1){
53        Serial.println("ON");
54        digitalWrite(led, LOW);
55      }
56      delay(1000);
57    }
58  }
59}

#define photoresistor 0
#define MorA 8
#define modeBtn 4
#define  toggleBtn 5
#define led 2

int mode = 0; // 0 is Auto, 1 is Manual
int  on = 1;

void setup() {
  pinMode(modeBtn, INPUT_PULLUP);
  pinMode(toggleBtn,  INPUT_PULLUP);
  pinMode(led, OUTPUT);
  pinMode(MorA, OUTPUT);
  Serial.begin(9600);
}

void  loop() {
  int light = analogRead(photoresistor);
  
  if (digitalRead(modeBtn)  == LOW){
    mode += 1;
    mode = mode % 2;
    if (mode == 0){
      Serial.println("Auto");
      digitalWrite(MorA, LOW);
    }
    if (mode == 1){
      Serial.println("Manual");
      analogWrite(MorA, 150);
    }
    delay(1000);
  }

  if (mode  == 0) {
    if (light < 300) {
      digitalWrite(led, LOW);
    }
    else {
      digitalWrite(led, HIGH);
    }  
  }

  if (mode  == 1) {
    if (digitalRead(toggleBtn) == LOW){
      on += 1;
      on  = on % 2;
      if (on == 0){
        Serial.println("OFF");
        digitalWrite(led,  HIGH);
      }
      if (on == 1){
        Serial.println("ON");
        digitalWrite(led, LOW);
      }
      delay(1000);
    }
  }
}

Downloadable files

Example of how to connect lightbulb to relay

This is not the final circuit diagram. This just shows how you would connect a lightbulb to a relay the way I did.

Example of how to connect lightbulb to relay

This is not the final circuit diagram. This just shows how you would connect a lightbulb to a relay the way I did.

Example of how to connect lightbulb to relay

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kindcrow896

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