How do I fix my HC-05 Bluetooth module?

Step 1: Diagnosing the Issue

Give VCC and GND connections to your Bluetooth module. I gave 5V from Arduino UNO and used one of the ground.
Set your DMM to voltage and check the voltage of the regulator as shown in the pic.
In my case it was 0.6V thats why one of the LED was litting up dim like shown in the pic above.

How do I connect to HC-05 as master?

Step 5: To Configure and Pair Two HC-05 As Master and Slave (Step 3)

AT+RMAAD (To clear any paired devices)
AT+ROLE=0 (To set it as slave)
AT+ADDR (To get the address of this HC-05, remember to jot the address down as it will be used during master configuration)
AT+UART=38400,0,0 (To fix the baud rate at 38400)

What is the default connection Role of bluetooth module HC-05?

HC-05 Bluetooth Module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup. HC-05 Bluetooth module provides switching mode between master and slave mode which means it able to use neither receiving nor transmitting data.

How do I reset my HC-05 Bluetooth module?

Configure with AT Mode: After the connection, If you Plug the power source, you will see the HC-05 power on with short rapid blink, which is standard pairing mode of module. For At Mode, you need to plug the power source while holding down the reset button on the module.

How do I know if my Bluetooth module HC-05 is working?

Testing HC-05 bluetooth module using Arduino UNO as serial to USB converter

First make sure your HC-05 Bluetooth Module is paired with your mobile.
Click on “SELECT DEVICE” icon to select paired Bluetooth module.
When you press “UP Arrow” it sends the data “A” to Bluetooth Module connected with the circuit.

How do I test a Bluetooth module?

The first thing to do is to power on the Bluetooth module and see if you can connect to it. For this you need an Android device. With the Bluetooth module powered and the LED(s) blinking, on the Android device go to Settings => Connections => Bluetooth and scan for Bluetooth devices. Here the phone has found the HC-06.

How do I know if my Bluetooth module is HC-05?

How do I reprogram my HC-05?

Make sure the HC-05 module is NOT PAIRED with any other Bluetooth device. Re-connect the Arduino Uno 5V wire to the HC-05’s VCC (5V power) pin. The HC-05 LED will blink on and off at about 2 second intervals. Now the HC-05 is in AT command mode ready to accept commands to change configuration and settings.

How to configure hc-05 Bluetooth module as Master?

This tutorial is going to teach you some basics on configuring two HC-05 Bluetooth Modules as Master and Slave respectively and also a simple tutorial to see how each HC-05 controls LEDs wirelessly. HC-05 Bluetooth Module is an easy-to-use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup.

What’s the maximum Bluetooth connection range for hc-05?

The connection can be point-to-point or multi-point where the maximum range is 10 meters. The transfer rate of the data is 1Mbps. HC-05 Bluetooth module provides switching mode between master and slave mode which means it able to use neither receiving nor transmitting data.

Is the hc-05 module compatible with Arduino?

To demonstrate the connection between HC-05 Module and Arduino, I have designed a simple circuit.

Is the hc-05 Bluetooth module compatible with UART?

HC-05 Bluetooth Module is a simple Wireless Communication device based on the Bluetooth Protocol. This module is based on BC417 Single Chip Bluetooth IC that is compliant with Bluetooth v2.0 standard and with support for both UART and USB interfaces.

How do I fix my HC-05 Bluetooth module?