How do I connect my HC 05 Bluetooth module to Arduino Uno?

How do I pair my HC 05 Bluetooth module?

Select the HC-05 Bluetooth Module on the display and double click the Serial Port Icon to connect. Key in default passwords: 1234 on [Passkey] to connect HC-05 Bluetooth Module. After key in correct passkey, the window will show which serial COM is connected to HC-05 Bluetooth Module.

How do I connect my Bluetooth module to my phone?

Before being able to use the Android application, you need to pair the Bluetooth module with your smartphone. Power the Arduino board, turn on Bluetooth on the Android phone and search for Bluetooth devices nearby: the JY-MCU module will present itself as HC-06, the pairing password is 1234.

Can HC-05 send data?

Mobile app



Connecting the Android device to the HC-05 creates a serial communication channel very similar to the serial monitor in the Arduino IDE. This means we need a Bluetooth version of the serial monitor. … for doing this go to Settings->Bluetooth->Scan device->select HC-05 and pair it. Pass code to pair is ‘1234’.

How does a Bluetooth module work?

The Bluetooth technology manages the communication channel of the wireless part. The Bluetooth modules can transmit and receives the data wirelessly by using two devices. The Bluetooth module can receive and transmits the data from a host system with the help of the host controller interface (HCI).

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Does Arduino have built in Bluetooth?

The Arduino BT is an Arduino board with built-in bluetooth module, allowing for wireless communication.

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 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.

Wireless connection