1- Use a macro like this to send at commands:
#include <SoftwareSerial.h>
SoftwareSerial btSerial(2, 3); // RX, TX
/*
* Connect pin 2 Arduino to pin TX HC-06
* Connect pin 3 Arduino to pin RX HC-06
*/
void setup() {
Serial.begin(9600);
Serial.println("Enter AT commands:");
btSerial.begin(9600);
}
void loop()
{
if (btSerial.available())
Serial.write(btSerial.read());
if (Serial.available())
btSerial.write(Serial.read());
delay(1000);
//btSerial.print("AT+PIN4321");
//btSerial.print("AT+NAMEAlibaba");
//btSerial.print("AT+BAUD4");
}
2- You may have another port set on the HC 06 instead of 9600, like I had. If so, try this code with all the possible port numbers and changing something like the password, and everytime you run the code - go check if it worked, this way you will find in wich port number you have your module.
good luck
