HC-06 Bluetooth Slave Serial (UART) Module

The HC-06 is a slave Bluetooth 2.0+EDR serial (UART) pass-through module. It can easily pair with a master Bluetooth device but cannot pair with another slave device.

It can be connected to the serial pins on your Arduino or other dev board and serve as a wireless serial link, all without having to do anything except connect power, ground, Tx, and Rx. Once powered, the module automatically starts broadcasting its ID waiting for a master Bluetooth device to pair with it.

The module has an on-board voltage regulator which allows you to power the module with supply voltages of 3.6V to 6V.

With a logic level of 3.3V you can directly connect this module to a Raspberry Pi but we recommend using a logic level converter when connecting it to 5V logic devices such as most Arduino boards.

Specifications

• Supply Voltage: 3.6V to 6V
  
• Chipset: CSR BC417
  
• Bluetooth Version: V2.0 + EDR
  
• Default Device ID: Addicore HC-06
  
• Default Passcode: 1234
  
• Default Baud Rate: 9600
  
• Board Dimensions:
  
  • Length (not including pins): 37mm (1.457")
    
  • Width: 16.96mm (0.668")

Resources

• HC-06 Module Datasheet
  
• Guide to using the HC-06 (By Erich Styger)
  
• Windows Bluetooth Terminal App (If you have a Bluetooth dongle, or your computer has integrated Bluetooth, then this app works for communicating with the HC-06 module over Bluetooth.)

Changing the ID, Passcode, or Baud Rate

• You can use AT commands, without any new-line or return characters, to change the following settings on the HC-06:
  
• Device ID:
  
  • Send “AT+NAMExxxx” where xxxx is the new name
    
    • Example: "AT+NAMEMyDevice" will change the name to MyDevice
      
• Passcode:
  
  • Send “AT+PIN####” replace #### with desired four digit pin
    
    • Example: "AT+PIN9876" will change the passcode to 9876
      
• Baud Rate:
  
  • Send “AT+BAUD#” replace # with the associated baud code found in the Baud Rate
  • Code List below
    
    • Example: "AT+BAUD8" will change the baud rate to 115200

Baud Rate Code List

• Baud Code - Baud Rate
  
  • 1 - 1200
    
  • 2 - 2400
    
  • 3 - 4800
    
  • 4 - 9600 (Default)
    
  • 5 - 19200
    
  • 6 - 38400
    
  • 7 - 57600
    
  • 8 - 115200
    
  • 9 - 230400
    
  • A - 460800
    
  • B - 921600
    
  • C - 1382400