home automation project elaborated in arduino, the complete material with connection diagram is shared
For correct communication between the Arduino, the HC-05 bluetooth module and the device bluetooth master, which in this case will be a cell phone, the following must be done setting. The bluetooth module comes by default established like this: Name HC-05, slave mode, with pairing code of 1234 (Password) and speed of 9600 baud. East module has 4 working states, connected state, disconnected state, AT1 mode and AT2 mode; For the configuration, enter the AT1 or AT2 mode. Using the "Command Prompt" or "Putty.exe" program you can perform the module configuration, since it is configured by AT command (AT1 or AT2 mode), when communication with AT commands is obtained, the name change is performed if you wish, password, communication speed and especially the job role, to this project requires the role of slave.