5 Tech Support: info@iteadstudio.comAT command Default: How to set the mode to server (master): 1. Connect PIO11 to high level. 2. Power on, module into command state. 3. Using baud rate 38400, sent the “AT+ROLE=1\r\n” to module, with “OK\r\n” means setting successes. 4. Connect the PIO11 to low level, repower the module, the module work as server (master). AT commands: (all end with \r\n) 1. Test command: Command Respond Parameter AT OK - 2. Reset Command Respond Parameter AT+RESET OK - 3. Get firmware version Command Respond Parameter AT+VERSION? +VERSION:<Param> Param : firmware version OK Example: AT+VERSION?\r\n +VERSION:2.0-20100601 OK HC-05 Bluetooth module iteadstudio.com 06.18.2010