HC-05 Serial Bluetooth Module

HC-05 is simple and in-expensive serial(UART) to bluetooth adapter. The HC-05 is an expensive module that is compatible with wide range of devices including smartphone, laptops and tablets. Adding a Bluetooth to Arduino can take your project to the next level. It opens up lots of possibilities for user interface (UI) and communication. The phone/tablet etc can act as an UI element or data logger and interpreter for your next project. 

Hardware Features

• Typical -80dBm sensitivity
• Up to +4dBm RF transmit power
• Low Power 1.8V Operation ,1.8 to 3.6V I/O
• PIO control
• UART interface with programmable baud rate
• With integrated antenna
• With edge connector
• 6 Pin connector

Software Features

• Default Baud rate: 9600, Data bits:8, Stop bit:1,Parity:No parity, Data control: has.
• Supported baud rate: 9600,19200,38400,57600,115200,230400,460800.
• Permit pairing device to connect as default.
• Auto-pairing PINCODE:”1234” as default
• Auto-reconnect in 30 min when disconnected as a result of beyond the range of connection.

Resources

• AT commands for HC-05
• HC_05_Core_Datasheet.pdf
• Detailed setup details for other types of HC-05 modules with different breakout board type at itead.cc.

Tutorial:

• Setting up Bluetooth HC-05 with Arduino

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