#include #define RxD 1 #define TxD 2 #define LRxD 3 #define LTxD 4 #define LedPin 0 SoftwareSerial EEBlue(RxD, TxD); // RX | TX SoftwareSerial mySerial(LRxD, LTxD); // RX | TX void setup() { pinMode(RxD, INPUT); pinMode(TxD, OUTPUT); pinMode(LRxD, INPUT); pinMode(LTxD, OUTPUT); pinMode(LedPin, OUTPUT); mySerial.begin(9600); EEBlue.begin(9600); mySerial.println("Hello ... I am Slave HC-05"); } void loop() { EEBlue.listen(); while (EEBlue.available() > 0) { char inByte = EEBlue.read(); if(inByte =='1') { digitalWrite(LedPin,HIGH); mySerial.println("1 received"); } if(inByte =='0') { digitalWrite(LedPin,LOW); mySerial.println("0 received"); } } }