Arduino with HC 08 bluetooth module I am connecting Arduino Uno R3 with HC 08 module lie following

Arduino 5v -&gt; HC 08 Vcc
Arduino gnd -&gt; HC 08 gnd
Arduino Pin 5 -&gt; HC 08 RXD
Arduino Pin 6 -&gt; HC 08 TXD


Then I connected two LEDs to 9 and 10 pins

Then loading following sketch.

#include &lt;SoftwareSerial.h&gt;

int availableLEDpin = 9;
int notAvailableLEDpin = 10;
SoftwareSerial hc_08(5, 6); // RX-5, TX-6
void setup() {
  pinMode(availableLEDpin, OUTPUT);
  pinMode(notAvailableLEDpin, OUTPUT);
  Serial.begin(9600);
  hc_08.begin(9600);

}

void loop() {
  hc_08.listen();
  if (hc_08.available()) {
    Serial.println(hc_08.read());
    digitalWrite(availableLEDpin, HIGH);
    digitalWrite(notAvailableLEDpin, LOW);

  }
  else {
    digitalWrite(availableLEDpin, LOW);
    digitalWrite(notAvailableLEDpin, HIGH);
  }
  delay(100);
}


I am trying to connect to bluetooth from y iOS application. The application is searching and connecting to the HC 08 correctly. And sending data successfully - Swift code log showing sent successfully.

But back in Arduino, always led connected to pin notAvailableLEDpin is glowing and nothing is printing in serial monitor. What is wrong with my implementation?
You have the receive port on your arduino connected to the receive port on your bluetooth module. Connect pin 5 to the Tx on your module and connect pin 6 to the Rx on your module.