Published December 9, 2024

PCL Door Switch

A particle device that pulls dials controlling light and a fan when a door is opened.

BeginnerShowcase (no instructions)2 hours30

Things used in this project

Hardware components

Photo resistor

Adafruit vibration sensor

Continuous Motion Servo

Particle Photon 2

Male/Male Jumper Wires

Resistor 100 ohm

Software apps and online services

Particle Build Web IDE

Hand tools and fabrication machines

Soldering iron (generic)

Wire Stripper & Cutter, 18-10 AWG / 0.75-4mm² Capacity Wires

Story

Home automation project for Lane Tech PCL course.

The project mainly uses a photo resistor and a vibration sensor. The vibration sensor is attached to the door you want to trigger the code and the photo resistor/rest of the photon needs to be in an area affected by the light that it controls. When the door is opened the vibration sensor should have an input greater than 0. When the vibration sensor has a reading the photon checks the light level through the photo resistor. If the light level is high it signals the servos to turn one way and turn the lights off. If the light level is low it signals the servos to turn the other way which turns the lights on. There is a delay built in to allow time to close the door and not have the program trigger on that input to the vibration sensor.

The video links would work through this program so

Video: https://go.screenpal.com/watch/cZlIlBnnCJX

Door Switch Code

// Include Particle Device OS APIs
#include "Particle.h"
SerialLogHandler logHandler(LOG_LEVEL_INFO);
Servo myServo;
Servo myServo2;
int photoPin = A5;
int vibePin = A2;



void setup()
{
    myServo.attach(D1);
    myServo2.attach(MISO);
    pinMode(photoPin, INPUT);
    Serial.begin(9600);
}

void loop()
{
// read the analog pin
    int vibe = analogRead(vibePin);
    int light = analogRead(photoPin);
//    Particle.publish(String(vibe));
//    Particle.publish(String(light));
    if(vibe > 30){
        if(light < 2000){
            myServo.write(0);
            myServo2.write(0);
            delay(1000);
            myServo.write(90);
            myServo2.write(90);
        }else if(light > 2000){
            myServo.write(180);
            myServo2.write(180);
            delay(1000);
            myServo.write(90);
            myServo2.write(90);
        }
    }
    delay(2000);
}