Bluetooth Shield V2.0


The Bluetooth Shield integrates a Serial Bluetooth module. It can be easily used with Arduino/Seeedstudio for transparent wireless serial communication. You can choose two pins from Arduino D0 to D7 as Software Serial Ports to communicate with Bluetooth Shield (D0 and D1 is Hardware Serial Port). The shield also has two Grove connectors (one is Digital, the other is Analog) for you to install Grove modules.


  • Input Voltage: 3.3V
  • Baudrate: 9600, 19200, 38400, 57600, 115200, 230400, 460800
  • Seeeduino/Arduino compatible
  • Up to10m communication distance in house without obstacle
  • UART interface (TTL) with programmable baud rate
  • Default Baud rate: 9600, Data bits: 8, Stop bit: 1, Parity: No parity
  • Default PINCODE:”1234”
  • A full set of configuration commands
  • On board PCB Antenna

Interface function

Pad Type Description
BT_IO IO Port of Bluetooth module can be control: read, write.
BT_RX UART Data input of Bluetooth module.
BT_TX UART Data output Bluetooth module.
Two Grove connectors One is Digital (D8 and D9), the other is I2C/Analog (A4 and A5).


1:Two Bluetooth Shield Connect

This demo will show you how to connect two Bluetooth shield.

You need two piece of Seeeduino V3.0, One Bluetooth Shield as Master while the other as Slave.

Hardware Installation

as folowing:

make sure the right connection of the jumpers

Download Code and Upload

  1. You can download the code in github, click here,then extract it to libraries folder of Arduino.

  2. Open Arduino IDE, open File -> Examples -> Bluetooth_Shield_V2_Demo_Code -> Master_Button, then you can open the code of Master

  3. Open Arduino IDE, open File -> Examples -> Bluetooth_Shield_V2_Demo_Code -> Slave_led, then you can open the code of Slave

  4. Click Upload to Upload the code, if you have any problem about how to start Arduino, please click here for some help.