What is the function of HC-05 Bluetooth module?

What is the function of HC-05 Bluetooth module?

HC-05 Bluetooth Module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup. Its communication is via serial communication which makes an easy way to interface with controller or PC.

How many pins are there in the HC-05 Bluetooth module?

The use of the HC-05 Bluetooth module is simple for every microcontroller, even for every system which has a serial communication interface. The module has two serial input pins, both will interface for data communication.

What is the range of HC-05 Bluetooth module?

It uses the 2.45GHz frequency band. The transfer rate of the data can vary up to 1Mbps and is in range of 10 meters.

How do I fix my HC-05 Bluetooth module?

Step 1: Diagnosing the Issue

  1. Give VCC and GND connections to your Bluetooth module. I gave 5V from Arduino UNO and used one of the ground.
  2. Set your DMM to voltage and check the voltage of the regulator as shown in the pic.
  3. 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 check my HC-05 Bluetooth Module?

(The easiest way is to see if the RED indicator is blinking). Now, go to the Bluetooth Settings on your phone and pair your phone with the HC-05 Device. The key is 1234. After successfully pairing, open the ArduDroid App and connect with the HC-05 module.

What are the 6 pins of the HC-05?


  • 1) ENABLE:
  • 2) VCC.
  • 3) GND.
  • 4) TXD:
  • 5) RXD.
  • 6) STATE:

How do I check my HC-05 Bluetooth module?

How do I know what Bluetooth module I have?

Scroll to the Wi-Fi section. Look at the Description: listing to see the brand and model of the wireless adapter installed in your computer. Note: The Bluetooth driver will be listed with the same brand and model number as the wireless adapter, as the Bluetooth module is built into the wireless adapter.

How do I test my HC-05 Bluetooth module?

4. Connect via Serial Bluetooth Terminal App

  1. Turn on Bluetooth and search for your HC-05 device.
  2. Connect to device using 4-digit secret.
  3. Download App “Serial Bluetooth Terminal”
  4. Open app and go to menu -> devices and select your HC-05.
  5. Type on or off at buttom of screen and hit -> send button.

What is en pin on Bluetooth module?

This pin is used to bring the Bluetooth module in AT commands mode. By default, this pin operates in data mode. The Key/EN pin should be high to operate Bluetooth in command mode. In HC-05, the default baud speed in command mode is 38400bps and 9600 in data mode.

What is the maximum range of Bluetooth?

The range of the Bluetooth® connection is approximately 30 feet (10 meters). However, maximum communication range will vary depending on obstacles (person, metal, wall, etc.) or electromagnetic environment. NOTE: Not all audio devices are supplied with Bluetooth capability.

Can Bluetooth range be extended?

A Bluetooth extender helps extend the connection distance, and it can extend your connection up to 100 feet indoors and 300 feet outdoors. They can also boost your signal strength and allow you to connect to multiple devices.

How many types of Bluetooth modules are there?

The Various Bluetooth modules used in the biomedical applications are HC-05, HC-06, RS 232: TTL, BLE link Bee, BLE mini, Blue SMiRF, Bluetooth mate, JY-MCU, ITEAD BT, etc. Among all the Bluetooth modules the HC-05 is commonly used modules.

How do I check my HC 05 Bluetooth module?

How do I test my HC-05 Bluetooth Module?

What is frequency of Bluetooth?

2.45 GHzBluetooth / Frequency

What is hc-05 serial Bluetooth module?

HC-05 Serial Bluetooth Module. Bluetooth is a technology for wireless communication. It is designed to replace cable connections.It uses serial communication to communicate with devices. It communicates with microcontroller using serial port (USART).

What is the voltage and current of the serial Bluetooth module?

Serial Bluetooth module for Arduino and other microcontrollers Operating Voltage: 4V to 6V (Typically +5V) Operating Current: 30mA Range: <100m

What are the operating modes of the hc-05?

The HC-05 has two operating modes, one is the Data mode in which it can send and receive data from other Bluetooth devices and the other is the AT Command mode where the default device settings can be changed.

What are the technical specifications of the hc-05?

HC-05 Technical Specifications. Serial Bluetooth module for Arduino and other microcontrollers. Operating Voltage: 4V to 6V (Typically +5V) Operating Current: 30mA. Range: <100m. Works with Serial communication (USART) and TTL compatible. Follows IEEE 802.15.1 standardized protocol.