how to communicate batwen arduino and node mcu(esp8266)

SENDING DATA BETWEEN ARDUINO TO ARDUINO OR ARDUINO TO NODE MCU

(WORKS FOR BOTH)

Use the following code in  Sender side

  

#include <SoftwareSerial.h>   // connect the 5 of esp to 5 of arduino
SoftwareSerial s(5,6);               //connect the 6 of esp to 6 of arduino

void setup() {
s.begin(9600);
}

void loop() {
int data=50;
if(s.available()>0)
{
 s.write(data);
}
}

 use following code on receiver side

#include <SoftwareSerial.h>
SoftwareSerial s(D6,D5);
float data;
void setup() {

Serial.begin(9600);
}

void loop() {
 
if (s.available()>0)
  {
    data=s.read();
    Serial.println(data);
  }
}