Cảm Biến Nhiệt độ ẩm DHT11 Với ESP8266 Và ứng Dụng BLYNK

HomeESP8266BLYNK Cảm biến nhiệt độ ẩm DHT11 với ESP8266 và ứng dụng BLYNK byIoT Review -October 24, 2021 1

1. Chuẩn bị:

+ NodeMcu ESP8266+ DHT11 Temperature Sensor+ BreadBoard+ Jumpers

2. Kết nối:

3. Code Blynk:

//www.youtube.com/c/nnchau //Cảm biến nhiệt, độ ẩm DHT11 /************************************************************** * App project setup: * Value Display widget attached to V5 * Value Display widget attached to V6 * **************************************************************/ #define BLYNK_PRINT Serial #include <SPI.h> #include <ESP8266WiFi.h> #include <BlynkSimpleEsp8266.h> #include <SimpleTimer.h> #include <DHT.h> // You should get Auth Token in the Blynk App. // Go to the Project Settings (nut icon). char auth[] = ""; //Enter the Auth code which was send by Blink // Your WiFi credentials. // Set password to "" for open networks. char ssid[] = ""; //Enter your WIFI Name char pass[] = ""; //Enter your WIFI Password #define DHTPIN 2 // Digital pin 4 // Uncomment whatever type you're using! #define DHTTYPE DHT11 // DHT 11 //#define DHTTYPE DHT22 // DHT 22, AM2302, AM2321 //#define DHTTYPE DHT21 // DHT 21, AM2301 DHT dht(DHTPIN, DHTTYPE); SimpleTimer timer; // This function sends Arduino's up time every second to Virtual Pin (5). // In the app, Widget's reading frequency should be set to PUSH. This means // that you define how often to send data to Blynk App. void sendSensor() { float h = dht.readHumidity(); float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit if (isnan(h) || isnan(t)) { Serial.println("Failed to read from DHT sensor!"); return; } // You can send any value at any time. // Please don't send more that 10 values per second. Blynk.virtualWrite(V5, h); //V5 is for Humidity Blynk.virtualWrite(V6, t); //V6 is for Temperature } void setup() { Serial.begin(9600); // See the connection status in Serial Monitor Blynk.begin(auth, ssid, pass); dht.begin(); // Setup a function to be called every second timer.setInterval(1000L, sendSensor); } void loop() { Blynk.run(); // Initiates Blynk timer.run(); // Initiates SimpleTimer } Tags: ESP8266BLYNK

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1 Comments

1. IoT ReviewOctober 26, 2021 at 10:17 PM

   rất hữu ích, xin cảm ơn!

   ReplyDeleteReplies
   Reply

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