Controlling Smart Board Using Adafruit iO.

Smart Board

Hey Friends In This Video I Will Show You How To Make Controlling Smart Board Using Adafruit.io IoT Platform.

Circuit Diagram :-

RELAY CONECTION :-

TWO WAY SWITCH CONECTIONS :-

Code :-

//Prateek //www.prateeks.in #include <ESP8266WiFi.h> #include "Adafruit_MQTT.h" #include "Adafruit_MQTT_Client.h" #include "DHT.h" //Relays for switching appliances #define Relay1 D1 #define Relay2 D2 #define Relay3 D3 #define Relay4 D4 //DHT11 for reading temperature and humidity value #define DHTPIN D5 //buzzer to know the status of MQTT connections and can be used for any other purpose according to your project need. #define buzzer D0 #define WLAN_SSID "justDo" #define WLAN_PASS "pratik123" // Adafruit.io Setup #define AIO_SERVER "io.adafruit.com" #define AIO_SERVERPORT 1883 #define AIO_USERNAME "justdoelectronics" #define AIO_KEY "aio_MbRZ81TiDcZaH6BsxlRkVBgIF6hE" WiFiClient 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); // Notice MQTT paths for AIO follow the form: <username>/feeds/<feedname> Adafruit_MQTT_Publish Humidity = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/humidity"); Adafruit_MQTT_Publish Temperature = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/temperature"); // Setup a feed called 'onoff' for subscribing to changes. Adafruit_MQTT_Subscribe Light1 = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/relay1"); Adafruit_MQTT_Subscribe Fan1 = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/relay2"); Adafruit_MQTT_Subscribe Light2 = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/relay3"); Adafruit_MQTT_Subscribe Fan2 = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/relay4"); #define DHTTYPE DHT11 // DHT 11 DHT dht(DHTPIN, DHTTYPE); uint32_t delayMS; void MQTT_connect(); void setup() { Serial.begin(115200); pinMode(buzzer, OUTPUT); pinMode(Relay1, OUTPUT); pinMode(Relay2, OUTPUT); pinMode(Relay3, OUTPUT); pinMode(Relay4, OUTPUT); 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()); //Setting up DHT sensor dht.begin(); // Setup MQTT subscription for onoff feed. mqtt.subscribe(&Light1); mqtt.subscribe(&Fan1); mqtt.subscribe(&Light2); mqtt.subscribe(&Fan2); } uint32_t x = 0; void loop() { MQTT_connect(); Adafruit_MQTT_Subscribe *subscription; while ((subscription = mqtt.readSubscription(20000))) { if (subscription == &Light1) { Serial.print(F("Got: ")); Serial.println((char *)Light1.lastread); int Light1_State = atoi((char *)Light1.lastread); digitalWrite(Relay1, Light1_State); } if (subscription == &Light2) { Serial.print(F("Got: ")); Serial.println((char *)Light2.lastread); int Light2_State = atoi((char *)Light2.lastread); digitalWrite(Relay2, Light2_State); } if (subscription == &Fan1) { Serial.print(F("Got: ")); Serial.println((char *)Fan1.lastread); int Fan1_State = atoi((char *)Fan1.lastread); digitalWrite(Relay3, Fan1_State); } if (subscription == &Fan2) { Serial.print(F("Got: ")); Serial.println((char *)Fan2.lastread); int Fan2_State = atoi((char *)Fan2.lastread); digitalWrite(Relay4, Fan2_State); } } // Reading temperature or humidity takes about 250 milliseconds! // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor) float h = dht.readHumidity(); // Read temperature as Celsius (the default) float t = dht.readTemperature(); // Read temperature as Fahrenheit (isFahrenheit = true) float f = dht.readTemperature(true); // Check if any reads failed and exit early (to try again). if (isnan(h) || isnan(t) || isnan(f)) { Serial.println("Failed to read from DHT sensor!"); return; } if (! Humidity.publish(h)) { Serial.println(F("Failed")); } else { Serial.println(F("OK!")); } if (! Temperature.publish(t)) { Serial.println(F("Failed")); } else { Serial.println(F("OK!")); } } void MQTT_connect() { int8_t ret; // Stop if already connected. if (mqtt.connected()) { return; } Serial.print("Connecting to MQTT... "); uint8_t retries = 3; digitalWrite(buzzer, HIGH); delay(200); digitalWrite(buzzer, LOW); delay(200); digitalWrite(buzzer, HIGH); delay(200); digitalWrite(buzzer, LOW); delay(200); 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(5000); // wait 5 seconds retries--; if (retries == 0) { // basically die and wait for WDT to reset me while (1); } } Serial.println("MQTT Connected!"); digitalWrite(buzzer, HIGH); delay(2000); digitalWrite(buzzer, LOW); }