Anon_1234
Newbie level 4
Hello, im doing a project on iot enabled thermal detector system using nodemcu,, I am not familiar with the ARDUINO IDE. There was an error for compiling board Nodemcu 1.0. Below is the link to the coding and the coding itself, any help is much appreciated.
www.instructables.com
IR Temperature Sensor IoT for Industries.
IR Temperature Sensor IoT for Industries.: Hi all. My project is based on real time temperature monitoring using Infra Red Temperature sensor and Nodemcu module. I used Adafruit IO for the dash board. This is to be made into a product and sold to industries which has furnaces, heater, or Mil…
www.instructables.com
Code:
//wiring: vin - 3.3v, gnd - gnd, scl - D1, sda - D2
#include <ESP8266WiFi.h>
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"
#include <Wire.h> // I2C library, required for MLX90614
#include <SparkFunMLX90614.h> // SparkFunMLX90614 Arduino library
/************************* WiFi Access Point *********************************/
#define WLAN_SSID "123456789"
#define WLAN_PASS ""
/************************* Adafruit.io Setup *********************************/
#define AIO_SERVER "io.adafruit.com"
#define AIO_SERVERPORT 1883
#define AIO_USERNAME "your IO user name"
#define AIO_KEY "your secret io key"
/************ Global State (you don't need to change this!) ******************/
// Create an ESP8266 WiFiClient class to connect to the MQTT server.
WiFiClient client;
// or... use WiFiFlientSecure for SSL
//WiFiClientSecure client;
// Setup the MQTT client class by passing in the WiFi client and MQTT server and login details.
Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_KEY);
/****************************** Feeds ***************************************/
// Setup a feed called 'photocell' for publishing.
// Notice MQTT paths for AIO follow the form: <username>/feeds/<feedname>
Adafruit_MQTT_Publish temperature = Adafruit_MQTT_Publish(&mqtt, "prasannaakumar/feeds/temperature");
// Setup a feed called 'onoff' for subscribing to changes.
Adafruit_MQTT_Subscribe onoffbutton = Adafruit_MQTT_Subscribe(&mqtt, "prasannaakumar/feeds/onoff");
/*************************** Sketch Code ************************************/
// Bug workaround for Arduino 1.6.6, it seems to need a function declaration
// for some reason (only affects ESP8266, likely an arduino-builder bug).
void MQTT_connect();
IRTherm therm; // Create an IRTherm object to interact with throughout
void setup() {
Serial.begin(115200);
delay(10);
therm.begin();
therm.setUnit(TEMP_F); // Set the library's units to Farenheit
Serial.println(F("Adafruit MQTT demo"));
// Connect to WiFi access point.
Serial.println(); Serial.println();
Serial.print("Connecting to ");
Serial.println(WLAN_SSID);
WiFi.begin(WLAN_SSID, WLAN_PASS);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println();
Serial.println("WiFi connected");
Serial.println("IP address: "); Serial.println(WiFi.localIP());
// Setup MQTT subscription for onoff feed.
mqtt.subscribe(&onoffbutton);
}
uint32_t x=0;
void loop() {
// Ensure the connection to the MQTT server is alive (this will make the first
// connection and automatically reconnect when disconnected). See the MQTT_connect
// function definition further below.
MQTT_connect();
// this is our 'wait for incoming subscription packets' busy subloop
// try to spend your time here
Adafruit_MQTT_Subscribe *subscription;
while ((subscription = mqtt.readSubscription(5000))) {
if (subscription == &onoffbutton) {
Serial.print(F("Got: "));
Serial.println((char *)onoffbutton.lastread);
}
}
if (therm.read()) // On success, read() will return 1, on fail 0.
{
// Use the object() and ambient() functions to grab the object and ambient
// temperatures.
// They'll be floats, calculated out to the unit you set with setUnit().
temperature.publish(therm.object(), 2);
Serial.print("Object: " + String(therm.object(), 2));
Serial.write('°'); // Degree Symbol
Serial.println("F");
Serial.print("Ambient: " + String(therm.ambient(), 2));
Serial.write('°'); // Degree Symbol
Serial.println("F");
Serial.println();
delay(1);
// ping the server to keep the mqtt connection alive
// NOT required if you are publishing once every KEEPALIVE seconds
/*
if(! mqtt.ping()) {
mqtt.disconnect();
}
*/
}
}
// Function to connect and reconnect as necessary to the MQTT server.
// Should be called in the loop function and it will take care if connecting.
void MQTT_connect() {
int8_t ret;
// Stop if already connected.
if (mqtt.connected()) {
return;
}
Serial.print("Connecting to MQTT... ");
uint8_t retries = 3;
while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
Serial.println(mqtt.connectErrorString(ret));
Serial.println("Retrying MQTT connection in 5 seconds...");
mqtt.disconnect();
delay(500); // wait 5 seconds
retries--;
if (retries == 0) {
// basically die and wait for WDT to reset me
while (1);
}
}
Serial.println("MQTT Connected!");
}
Last edited by a moderator:
