Published November 16, 2018

Calendar Notifier Using Particle Photons

This device setup keeps track of different assignments and events from a Google calendar by displaying a light when an event begins.

BeginnerShowcase (no instructions)5 hours628

Calendar Notifier Using Particle Photons

Things used in this project

Hardware components

Particle Photon

Solderless Breadboard Half Size

Software apps and online services

Google Sheets

IFTTT Maker service

Story

With all the hustle and bustle in the world that we live in, we sometimes forget the work we have to do. Using a calendar is great but it doesn't help if it's not checked. With this device setup you can link your Google calendar to the control photon and then this device will relay a signal to the notifier photon displaying a LED light on-board the photon.

The Data Control Photon is linked to the Google calendar via IFTTT. "This" is set to the Google Calendar and sends out a variable any time an event begins on the Calendar. "That" is set to the Data Control Photon which receives the variable from IFTTT and triggers a process developed in the code.

Event Variable has been received and LED's for both photons have been turned on.

The Data Control Photon will first publish a variable for the Notification Photon to subscribe to and cause the onboard LED of the Notification Photon to light up. The triggering of the onboard LED causes the Notification Photon to publish a new variable in which the Data Control Photon will be subscribed to and therefore cause the onboard LED of the Data Control Photon to turn on.

Setup button on Data Control Photon has been pushed, LED on Notification Photon has turned off.

When the user has seen the notification lights on both photons, the user can hold the SETUP button on the Data Control Photon for longer than 0.5 seconds and this will cause both onboard LED's to turn off. This also causes a new variable to be published to IFTTT where a Google Spreadsheet receives the variable and records the date and time the button was pressed, signalling the event was seen. After this, all is set back to initial state for the next event or notification. NO more missed events!

LED on Data Control Photon has now turned off and system is set back to beginning state.

A link to the Google Spreadsheet for live data can be found below.

https://docs.google.com/spreadsheets/d/e/2PACX-1vQExPHhThASePbSgDex5lc2aX8lYHroqc8yBvnKTkTOgkKvV4EkGaSsMcJfuV9JPhNGFsbgNlDlauW2/pubchart?oid=1807153617&format=interactive

Video demonstration of our project can be seen below.

IOT Project Demonstration

Code

int boardLed = D7;


void setup()
{
    Particle.subscribe("YogiSignal", flickerled);
    Serial.begin(230400);
    pinMode(boardLed,OUTPUT); // Our on-board LED output
    Particle.subscribe("Event_finished",button);
}
void flickerled (const char *event, const char *data)
{

    if(strcmp(data, "Event_Found")==0)
{
        digitalWrite(boardLed,HIGH);
        Serial.println("Event_Found");
        Particle.publish("Event_Confirmed26","1");
}
}
void button(const char *event, const char *data)
{
    if(strcmp(data,"buttonpressed")==0)
    {
        digitalWrite(boardLed,LOW);
        delay(15000);
}
}

SYSTEM_THREAD(ENABLED)
bool buttonset = false;
int boardled= D7;

void setup()
{
Particle.subscribe("Event_Found", writetoscreen); 
//receive from IFTTTT send to function
WiFi.RSSI();
Particle.subscribe("Event_Confirmed26", eventconfirmed);
pinMode(boardled,OUTPUT);
digitalWrite (boardled, LOW);
}

  
void writetoscreen(const char *event, const char *data)
{
    if(strcmp(event,"Event_Found")==0) 
    { //compare variable and determine meaning
        
        Particle.publish("YogiSignal","Event_Found", 60);
}}

void loop() {
    if (System.buttonPushed() > 500) {
        Particle.publish("Event_finished", "buttonpressed", 60); 
        buttonset = true;
        delay(5000);
        digitalWrite (boardled,LOW);
    }
}

void eventconfirmed (const char *event, const char *data) {
    if(strcmp(event, "Event_Confirmed26")==0)
    { digitalWrite(boardled, HIGH);
}}