Trouble with HM-10

Using Arduino Networking, Protocols, and Devices
1

Hello, I have a problem with the HM-10 BLE 4.0 bluetooth module. I have a 4wd Arduino Uno kit with L293D motor shield. I connected the Bluetooth module first to the pins where the servo was located, then switched to RX and TX on A4 and A5. The indicator light on the module is flashing. I tried to communicate via Serial Monitor with the following code:
#include <SoftwareSerial.h>

#define BAUD 9600

SoftwareSerial softSerial (A4, A5); // Rx, Tx as required.

void setup()
{
Serial.begin(BAUD);
softSerial.begin(BAUD);

Serial.print("Ready @ ");
Serial.print(BAUD);
Serial.println("baud");
}

voidloop()
{
while (Serial.available() > 0)
softSerial.write(Serial.read());

while (softSerial.available() > 0)
Serial.write(softSerial.read());
}

The result was: 18:47:38.010 -> Ready @ 9600 baud
18:47:48.849 -> Ready @ 9600 baud.
I entered various commands (AT etc.), I get neither OK nor ERR. I don't know what to do anymore. Any suggestions?

2

Please use code tags when posting code.

The HM-10 is 3.3V only and cannot be directly connected to OUTPUT pins on a 5V Arduino.

Good starting tutorial: HM-10 Bluetooth 4 BLE Modules – Martyn Currey

3

Keyes Bluetooth 4.0 Module MD-269 Wireless Serial HM-10 Arduino Flux Workshop | eBay. I have exactly it, I did the same thing as the person in the YT video and it doesn't work for me.

4

This is utterly meaningless. You will get that result with the Bluetooth disconnected and in your pocket. Check your connections are Rx to Tx and Tx to Rx.