Hm-10 factory reset

Projects Interfacing w/ Software on the Computer
1

Hello!!
Recently I got my HM 10 module and I started exploring it's AT commands.
But accidentally I set the baud rate to 38400 using AT+BAUD2.
Now I am unable to use any AT commands.
some random characters get displayed.

Below is the code I used.

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX

void setup() {

Serial.begin(19200);

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

mySerial.begin(9600);

}

void loop()

{

if (mySerial.available())

Serial.write(mySerial.read());

if (Serial.available())

mySerial.write(Serial.read());

}

I also tried to factory reset it by setting reset b pin to gnd but that too didn't work.
Need help here!!!!!

2

Why not change the baud rate in the sketch to 38400 ?

4

Tried that too but same random characters on serial monitor.
I have checked every combination on serial monitor.

5

These indicate (to me) that comms is trying, but with baud mismatch. What is the factory default? 9600? 115200? 300?

6

9600 is default for hm10

7

when you tried the HM-10 at 38400baud did you change the Serial Monitor baudrate?
I suggest changing it to 115200baud
you may have problems with SoftwareSerial at 38400baud
try AltSoftSerial or move to a board with hardware serial ports, e.g. Mega

8

Yess I synced the serial monitor with the baud rate.
Currently I am using arduino nano

9

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