ATCommands for the HC05 Bluetooth breakouts

atcommand.ino

#include <SoftwareSerial.h>
SoftwareSerial BTSerial(10, 11); // RX | TX

/**
 * TX -> 10
 * RX -> 11
 * KEY -> 6
 * 
 * Set baudrate in Serial monitor to 38400!!!
 * Connect Module after arduino is started!
 * 
 * Commands:
 * AT
 * AT+VERSION
 * AT+NAME=NAME
 * AT+PSWD=1234
 * AT+UART=115200,1,0 // Baudrate, stopbit, parity
 */

void setup()
{
  pinMode(6, OUTPUT);  // this pin will pull the HC-05 pin 34 (key pin) HIGH to switch module to AT mode
  digitalWrite(6, HIGH);
  Serial.begin(9600);
  Serial.println("Enter AT commands:");
  BTSerial.begin(38400);  // HC-05 default speed in AT command more
}

void loop()
{
  // Keep reading from HC-05 and send to Arduino Serial Monitor
  if (BTSerial.available())
    Serial.write(BTSerial.read());
  // Keep reading from Arduino Serial Monitor and send to HC-05
  if (Serial.available())
    BTSerial.write(Serial.read());
}