I get no response to AT commands with HC-05 and Arduino Nano Every

Projects Networking, Protocols, and Devices
1

I have an Arduino Nano Every and I want to use an HC-05 Bluetooth module with it, but when trying the AT command, I get no response. I tried changing the baud rate, changing the pins, resetting the Arduino, but nothing works. Can somebody help me?

2

Post your test code. Read the forum guidelines to see how to properly post code and some good information on making a good post.

Use the IDE autoformat tool (ctrl-t or Tools, Auto format) before posting code in code tags.

Please post a wiring diagram. Written descriptions are always more ambiguous than a drawing. Hand drawn, photographed and posted is fine. Include all pin names/numbers, components, their part numbers and/or values and power supplies.

3

My code is :

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11);

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

  Serial.println("Enter AT commands:");

  mySerial.begin(38400);
}

void loop() {
  if (mySerial.available())
    Serial.write(mySerial.read());
  if (Serial.available())
    mySerial.write(Serial.read());
}

and here are my connections :
fritzing hc 05

4

You might try

mySerial.print("AT"); //PING

as the last line in setup.

5

Already tried, doesn't work.

6

Does the Bluetooth LED change to slow flash?
Are you using a button switch?

7

The HC-05 LED is blinking slowly, but I don't understand what do you mean by "button switch" ?

8

Most, if not all, modern HC-05s have a button to put them into AT mode.

9

Are you talking about the KEY pin?

10

HC-05 buttonI
IF you have slow flash, I'm not sure this is relevant as you are in AT mode. Maybe your breadboard is suss. Check the Martyn Currey website, I think he covers everything.
I'm going to bed.

11

Thank you for your help, good night.

12

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