ESP8266-Blynk+วัดอุณหภูมิ ความชื้น
1.สมัครสมาชิก
https://blynk.cloud/
2.สร้าง APP
3.เขียนโค๊ด
https://examples.blynk.cc/?board=ESP8266&shield=ESP8266%20WiFi&example=More%2FDHT11
ต้วอย่าง Blynk Cloud
ตัวอย่าง CODE
#define BLYNK_TEMPLATE_ID "TEMPLATE_ID"
#define BLYNK_DEVICE_NAME "DEVICE_NAME"
#define BLYNK_AUTH_TOKEN "AUTH_TOKEN"
// Comment this out to disable prints and save space
#define BLYNK_PRINT Serial
#include ESP8266WiFi.h //ให้ใส่ < > ครอบไว้
#include BlynkSimpleEsp8266.h //ให้ใส่ < > ครอบไว้
#include DHT.h //ให้ใส่ < > ครอบไว้
char auth[] = BLYNK_AUTH_TOKEN;
// Your WiFi credentials.
// Set password to “” for open networks.
char ssid[] = “iot”;
char pass[] = “044056570”;
#define DHTPIN D2 // What digital pin we’re connected to
// 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);
BlynkTimer 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(V1, h);
Blynk.virtualWrite(V0, t);
}
void setup()
{
// Debug console
Serial.begin(115200);
Blynk.begin(auth, ssid, pass);
// You can also specify server:
//Blynk.begin(auth, ssid, pass, “blynk.cloud”, 80);
//Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8080);
dht.begin();
// Setup a function to be called every second
timer.setInterval(1000L, sendSensor);
}
void loop()
{
Blynk.run();
timer.run();
}
