BT shield is a HC-05 serial port Bluetooth module breakout board, plug in with Arduino and use the UART port for BT communication is ok.

ITEAD Wireless Bluetooth Shield Module Starter Kit For Arduino

Model: IM120417010

Regular Price: $26.00

Special Price $13.60

Availability: Out of stock

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Quick Overview

The Bluetooth Shield integrates a HC-05 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).