1、Module description: The BT-HC05-V1.0 module is a high performance Bluetooth serial port module. 1 can be used for a variety of Bluetooth enabled computers, Bluetooth hosts, mobile phones, PDA, PSP and other smart terminal pairing. 2 wide range of baud rate 4800~1382400, and the module is compatible with single chip microcomputer system. 3 when the master slave mode two Bluetooth module after the success, you can simply change to the wireless Bluetooth, so that your equipment or products more advanced, more fashionable. 4 you can easily use the available Bluetooth mobile phone software, etc.. Master slave 5V/3.3V to replace the previous serial wire communication application control car, home appliances 2、Function Description: Bluetooth 2.0 with EDR, 2Mbps-3Mbps modulation o built-in 2.4 GHz antenna, users do not need to debug antenna o external 8Mbit flash o low voltage 3.3V Optional PIO control Standard HCI port (or USB UART) USB protocol: Full Speed USB1.1, Compliant With 2 O module can be used as SMD chip technology RoHS process O pin half hole process Digital 2.4GHz wireless transceiver BC04 CSR Bluetooth chip technology afh Small size (27mm * 13mm * 2mm) Simple peripheral circuit Bluetooth Class 2 power level Storage temperature: -40 to +85 degrees, working temperature: -25 to +75 degree Co wave interference: 2.4MHz, transmit power 3 dBm Bit error rate: 0, but it will produce signal decay in the transmission link, only the error, such as RS232 and TTL line processing line 3、Description of each function module: ![enter image description here][1] 4、Components and PCB diagram before welding: ![enter image description here][2] 5、Physical map after welding: ![enter image description here][3] ![enter image description here][4] ![enter image description here][5] [1]: /editor/20160606/575518c14c24f.png [2]: /editor/20160606/575518d290dff.jpg [3]: /editor/20160606/575518e952721.jpg [4]: /editor/20160606/575518f1656f3.jpg [5]: /editor/20160606/575518f9c62c6.jpg