Here is a simple breakout board for the Rayson BTM-182. It is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup. This is a fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps modulation with complete 2.4GHz radio transceiver. It uses CSR Bluecore 04 external single chip Bluetooth system with CMOS technology and with AFH (Adaptive Frequency Hopping). Project description, more information and ordering can be found at https://www.sparkfun.com/products/9977 Module Datasheet: http://www.sparkfun.com/datasheets/Wireless/Bluetooth/BTM182.pdf Command Set: http://www.sparkfun.com/datasheets/Wireless/Bluetooth/SPP%20AT%20command%20set.pdf BTM-112 Datasheet: http://www.sparkfun.com/datasheets/Wireless/Bluetooth/BTM112_wATcommands.pdf Example Design: http://www.sparkfun.com/datasheets/Wireless/Bluetooth/LM400%20Data%20Sheet%20DSS%20ver%201.2.pdf