Please be gentle with me. I am attempting to modify the configurations of my HC-05 bluetooth module by using the AT command set. The method by which I'm trying to do this is by implementing the following connection:
HC-05 GND --> Arduino GND; HC-05 3.3v --> Arduino 3.3V; HC-05 TX --> Arduino Pin 10; HC-05 RX --> Arduino Pin 11; HC-05 KEY --> Arduino Pin 9
This is the code which I uploaded to my Arduino (btw my arduino uno is an SMD clone): (code's from http://www.instructables.com/id/Modify-The-HC-05-Bluetooth-Module-Defaults-Using-A/step2/The-Arduino-Code-for-HC-05-Command-Mode/)
#include <SoftwareSerial.h>
SoftwareSerial BTSerial(10, 11); // RX | TX
void setup() {
pinMode(9, OUTPUT); // this pin will pull the HC-05 pin 34 (key pin) HIGH to switch module to AT mode
digitalWrite(9, 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());
}
The problem is I can't seem to activate the AT mode. I don't get any response from the Serial Monitor whatever AT command I try. I double-checked the wiring and it's all good. I can't figure out what the problem is.
