HC05 Bluetooth Transceiver Module for Arduino 

Description

HC05 Bluetooth Transceiver Module can add two way (full-duplex) wireless functionality to projects. It is used to communicate between two microcontrollers like Arduino. Or communicate with any device with Bluetooth functionality like a Phone or Laptop. It also communicates with the help of USART at 9600 baud rate hence it is easy to interface with any microcontroller that supports USART. 

Specifications of HC05 Bluetooth Transceiver Module includes;

• It is a Serial Bluetooth module for Arduino and other microcontrollers
• Has an Operating Voltage of  4V to 6V (Typically +5V)
• It has an Operating Current of 30mA
• Its Range is <100m
• In addition to that, it Works with Serial communication (USART) and is TTL compatible
• Also Follows IEEE 802.15.1 standardized protocol
• To add on that, it Uses Frequency Hopping Spread spectrum 
• Moreover, it Operates in Master, Slave or Master/Slave mode
• Also its easily interfaced with Laptop or Mobile phones with Bluetooth
• Lastly, Supported baud rate of  9600,19200,38400,57600,115200,230400,460800.

Default Settings

• Bluetooth Name: “HC-05”
• Password: 1234 or 0000
• Communication: Slave
• Mode: Data Mode
• Data Mode Baud Rate: 9600, 8, N, 1
• Command Mode Baud Rate: 38400, 8, N, 1
• firmware: LINVOR

HC-05 Equivalent Bluetooth Module

HC-02

Other Bluetooth Modules

HC-04, HC-06, HM-11, ESP32, CSR8645

Applications

• Used in Wireless communication between two microcontrollers
• Also used to Communicate with Laptop, Desktops and mobile phones
• In addition to that, in Data Logging application
• It is also used in Consumer applications
• Last but not least, in Wireless Robots
• Lastly, in Home Automation

Datasheet