Ardunio UNO serial Monitor xxxx with HC05

Projects Programming
1

Hello,

I was looking to make a bluetooth car with two Arduino Nanos and two HC05 modules.
So far i was able to get a respones in my serial monitor after switching the HC05 to AT mode but i just got xxxx and questionmarks... Below is the result of sending AT in the serial monitor at 9600 and 38400 Baud.

15:41:19.093 -> btSerial started at 38400
15:41:24.374 -> xxxxxxxxxx⸮⸮x⸮x⸮xx⸮x⸮

I have the code attached as well:

#include <SoftwareSerial.h>
SoftwareSerial BtSerial(0, 1);  // RX | TX

void setup() {
  Serial.begin(9600);

  BtSerial.begin(38400);
  Serial.println("btSerial started at 38400");
}

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

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

/*
Slave Command:
AT
AT+RMAAD
AT+ROLE=0
AT+UART=38400,0,0
AT+ADDR


Master Commands:
AT
AT+RMAAD
AT+ROLE=1
AT+UART=38400,0,0
AT+CMODE=0
AT+BIND=98D3:61:F613EA  (This should be your HC05 Slave address)
*/

Does anyone of you know why im not geting any OK back?

2 
SoftwareSerial BtSerial(0, 1);  // RX | TX

Don't use SoftwareSerial on pins 0 and 1 of a Nano because they are used by the hardware Serial interface. Use 2 other pins

3

Alright I will try that

4

Thank you very much. Now its working

5

I am glad that I was able to hep

6

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