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The Bluetooth Shield integrates a Serial Bluetooth module. It can be easily used with Arduino 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 Puzzle connectors (one is Digital, the other is Analog) for you to install Puzzle modules.

Note: Headers of this product is shipped soldered.

Features：

●  Stackable Bluetooth Shield Support Master/Slave Role  Model for Arduino 

●  Bluetooth Shield a serial port Bluetooth module (Master/Slave) breakout board. You can choose ARDUINO's Digital PIN D0->D7 as Software UART to communicate with Bluetooth Shield (and D0,D1 also is Hardware UART).

●  Serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps Modulation with complete 2.4GHz radio transceiver and baseband. It uses CSR Blue core 04-External single chip Bluetooth system with CMOS technology and with AFH (Adaptive      Frequency Hopping Feature). Hope it will simplify your overall design/development cycle.

●  And now, we provide HC-05, which could be setting to Master or Slave by user.

●  Note: Only between master device and slave device can be paired with each other. Between Master and Master devices or Slave and Slave devices can't be paired each other. The Slave mode could be paired with PDA, PC etc.

Hardware Features

●  Arduino compatible.

●  On board 3.3v/5v level conversion.

●  Typical -80dBm sensitivity.

●  Up to +4dBm RF transmits power.

●  Fully Qualified Bluetooth V2.0+EDR 3Mbps Modulation.

●  Low Power Operation.

●  PIO control.

●  UART interface with programmable baud rate.

●  Integrated PCB antenna.

Software Features

●  Default Baud rate: 38400, Data bits:8, Stop bit:1,Parity:No parity.

●  Supported baud rate:   9600,19200,38400,57600,115200,230400,460800.

●  Status instruction port PIO1: low-disconnected,  high-connected(3V3);

●  Auto-connect the last device on power as default.

●  Permit matched device connect by default.

●  Default PINCODE:”1234”.

●  Auto-reconnect in 30 min when disconnected as a result of beyond the range of connection.