How to compare 2 values with 2 nodemcu and control

Need Help With My Project
1

hello Blynk community

first, i connect 2 nodemcu with wifi and after that i send value temperature of first nodemcu (client) to second nodemcu (server ) and compare 2 value of temperature and control led but it not working . Does any can help me ? thanks you so much

// this is code sever
#define BLYNK_PRINT Serial

#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <SimpleTimer.h>
#include <DHT.h>
#define den  D0
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "de7e5b820d7a4e54be6d760*******"; 
char ssid[] = "Nokia5.1"; //Tên wifi
char pass[] = "88888888"; //Mật khẩu
#define SOIL_MOIST_1_PIN A0 
#define DHTPIN D3 // What digital pin we're connected to
int soilMoist = 0; 
#define DHTTYPE DHT11   // DHT 11

DHT dht(DHTPIN, DHTTYPE);
SimpleTimer timer;
WidgetBridge bridge1(V1);

BLYNK_WRITE(V11) {
int pinValue = param.asInt();
}

BLYNK_CONNECTED() {
  
  bridge1.setAuthToken("de7e5b820d7a4e54*********"); 
}

void sendSensor(){

  float hsever = dht.readHumidity();
  float tsever = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
  
  if (isnan(hsever) || isnan(tsever)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }


  Blynk.virtualWrite(V3, hsever);
  Blynk.virtualWrite(V4, tsever);
  if( tsever < V11 )
    {
      digitalWrite(den,1);
      }
  else{
      digitalWrite(den,0);
    }
}

void setup(){
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);
  dht.begin();

  timer.setInterval(1000L, sendSensor);
}

void loop(){
  Blynk.run();
  timer.run();
}

and this is client


#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <DHT.h>
#define DHTPIN D2
#define  DHTTYPE DHT11   // DHT 11
DHT dht(DHTPIN, DHTTYPE);
#include <SimpleTimer.h>
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "de7e5b820d7a4e54be6d7****5a84d6";
SimpleTimer timer;
int soilMoist = 0; 
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Nokia5.1"; //Tên wifi
char pass[] = "88888888"; //Mật khẩu



void sendSensor(){
  // get readings from the DHT22 sensor
  float hclient = dht.readHumidity();
  float tclient = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
  
  if (isnan(hclient) || isnan(tclient)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
    
     
    Blynk.virtualWrite(V2, tclient);


bridge1.virtualWrite(V11, tclient); 

  }
  }

void setup()
{
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);
  dht.begin();

  timer.setInterval(1000L, sendSensor);

}

void loop()
{
  Blynk.run();
   timer.run();
}
2

you need to receive…

BLYNK_WRITE(V3) { //2nd nodemcu
hsever= param.asInt();
}

BLYNK_WRITE(V4) { //2nd nodemcu
tsever= param.asInt();
}
  ```
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3 
BLYNK_WRITE(V11) { //1st nodemcu
tclient= param.asInt();
}

I don’t see any bridge1.virtualWrite(Vxx, hclient );

1 Like