christmas lights scheduler on particle

README.md

I used particle core http://particle.io and a relay module http://allegro.pl/show_item.php?item=6573707747 to turn the lights on/off. Relay is needed because you cannot get more than 3,3V from particle core pin and you shouldn't puch much current through it anyway.

The module has a bit surprising API, but thanks to https://community.particle.io/t/switch-relay-by-connecting-pin-to-ground/9077/27 I could use it succesfully.

Christmas lights (in my case 4,5V) are wired to the relay, relay IN is connected to pin D6 on particle and that's it.

christmas_lights.ino

void relayOn() {
  pinMode(D6, OUTPUT);
  digitalWrite(D6, LOW);
  Particle.publish("on");
}

void relayOff() {
  pinMode(D6, INPUT);
  Particle.publish("off");
}

void setup() {
    relayOn();
    Time.zone(1);
    Particle.publish("time", Time.timeStr());
    Particle.publish("hour", String(Time.hour()));
}

int hourOn_1 = 5;
int hourOff_1 = 8;

int hourOn_2 = 15;
int hourOff_2 = 22;

int previous_hour=0;

void loop() {
    
    int current_hour = Time.hour();
    
    if (current_hour != previous_hour) {
        Particle.publish("hour", current_hour);
        previous_hour = current_hour;
        
        if (current_hour == hourOn_1 || current_hour == hourOn_2) {
            relayOn();
        }
        if (current_hour == hourOff_1 || current_hour == hourOff_2) {
            relayOff();
        }
        
    }
}