Arduino controlled door trigger light bulb

I always forget to turn off the light, no longer bother to turn the lights

erkin

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Description

I always forget to turn off the light, no longer bother to turn the lights

When the door is opened the relay pulls,
If the door is closed wait 10 seconds and leave the role.

Details

Components

1 × ATTiny 85 http://www.banggood.com/x-p-921115.html
1 × 8 Pin DIP IC Socket Adaptor (RECOMMENDED!!) http://www.banggood.com/x-p-922882.html
1 × Relay http://www.banggood.com/x-p-943402.html
1 × NPN Transistor http://www.banggood.com/x-p-943224.html
1 × Diode http://www.banggood.com/x-p-952556.html

View all 9 components

Build Instructions

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Step 1

Source code:

int rolePin = 2; // pin that connects the relay 
int magnetPin = 3; // pin that connects magnetic switches 
int wait = 10000; // time to turn off light (in milliseconds) 
boolean doorStatus = false;


void setup() { 
pinMode(rolePin, OUTPUT); 
pinMode(magnetPin, INPUT_PULLUP); 


} 


void loop() { 
int magnetState = digitalRead(magnetPin); 


if (magnetState == HIGH) { 
digitalWrite(rolePin, HIGH);  
doorStatus = true;
} 
else{ 
  if (doorStatus == true) {
delay(wait);
digitalWrite(rolePin, LOW); 
doorStatus = false;
 }
} 
delay(5);
}