Smart Kitchen Containers

// This example shows how to connect to Cayenne using an ESP8266 and send/receive sample data.
// Make sure you install the ESP8266 Board Package via the Arduino IDE Board Manager and select the correct ESP8266 board before compiling. 
int echoPin1=2,trigPin1=0;

#define CAYENNE_DEBUG
#define CAYENNE_PRINT Serial
#include <CayenneMQTTESP8266.h>

// WiFi network info.
char ssid[] = "***";
char wifiPassword[] = "***";

// Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
char username[] = "***************";
char password[] = "***************";
char clientID[] = "***************";

unsigned long lastMillis = 0;

void setup() {
  Serial.begin(9600);
  Serial.println("hello");
// pinMode(LED_BUILTIN, OUTPUT); 
 pinMode(echoPin1,INPUT);
 pinMode(trigPin1,OUTPUT);
//  digitalWrite(LED_BUILTIN, LOW);
 // delay(3000);
  Cayenne.begin(username, password, clientID, ssid, wifiPassword);
}

void loop() {
   int duration,distance;
    
  Cayenne.loop();
  //-----------------------------------------------------------------------------------------------------------------------------------
  //                                                 Content Measurement
  //-----------------------------------------------------------------------------------------------------------------------------------
       digitalWrite(trigPin1,LOW);
       delayMicroseconds(2); 
       digitalWrite(trigPin1,HIGH);
       delayMicroseconds(10); 
       digitalWrite(trigPin1,LOW);
       duration = pulseIn(echoPin1,HIGH);
       distance = ((duration/2))/29.1;
       Serial.println(distance);
       delay(300);
  //-----------------------------------------------------------------------------------------------------------------------------------
//                                                End of Content Measurement
  //-----------------------------------------------------------------------------------------------------------------------------------
  //Publish data every 10 seconds (10000 milliseconds). Change this value to publish at a different interval.
  if (millis() - lastMillis > 1000) {
    lastMillis = millis();
    
    Cayenne.virtualWrite(0, distance, TYPE_PROXIMITY, UNIT_CENTIMETER);    // writing the content information
  }
}