Design & development of daughter board for Raspberry Pi to support Bluetooth communication using UART

Reliable and secured communication between two or more devices require wired connection. A wireless communication such as — Bluetooth, WI-Fi, ZigBee etc. provides flexible and inexpensive solution for remote applications. A large number of low cost hardware platforms such as Raspberry Pi, Arduino, mbed boards etc. are available that do not provide any inbuilt wireless module but are equipped with UART, I2C ports for design and development of Internet of Things (IoT) and embedded applications. Designers face the difficulty to use such a low cost hardware for wireless communication in order to implement these applications. In this paper, Design & Development of Daughter Board for Raspberry Pi to support Bluetooth Communication using UART is proposed as an integrated solution. Results of various QoS parameters such as transmission rate, file format(text, pdf, image & audio), baud ratesand range for Bluetooth communication between two devices are presented. The result shows that Bluetooth module is capable of transmitting files of same size in different format approximately in same time. Proposed solution can further be extended to different protocols such as Wi-Fi and ZigBee etc.