No response on AT commands in HC-05bt module

Projects General Guidance
1

When I am trying to use AT command there is no response in serial monitor. I tried all the ways in the internet but that didn't work. I need help soon.....bcz we are in school project
I applied the normal code i.e

void setup() {
// put your setup code here, to run once:

}

void loop() {
// put your main code here, to run repeatedly:

}

and then I tried connecting Rx pin in arduino Rx pin in bt module and Tx pin to Tx pin in bt module
also tried connecting Rx pin from arduino to Tx in Bt module and Tx pin to RX pin in bt module
but I didn't get any response from bt module...... I need solution for this soon. I tried changing baud rate also but it didn't help in anyway......

2

You are providing absolute minimal information.

For atarters

  1. Which board?
  2. Wiring diagram/ schematic.
  3. Your code, posted with code tags as described in How to get the best out of this forum.

Your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project.

3

I edited my post now tell me the solution pl
ease I need it soo

4

Your "code" doesn't do anything.

5

I'm not familiar with bleutooth modules so can't advise further.

That might be because OP seems to be trying to use the Arduino as a TTL-to-USB converter.

6

nope the method I had done is different we need to upload the code and connect the pins normally in this way I Tried one time that work's but this time it didn't

7

What Arduino? The pass through method will not work with a native USB board.

You can try the alternative method to issue AT commands with software and a loaded sketch.
http://www.martyncurrey.com/hc-05-with-firmware-2-0-20100601/#AT-Command-Mode

8

How should I know :smiley: I asked OP to provide that information but did not see an answer and that question :frowning:

Very true; assumption is the mother of all f...ups :wink: