Explanation
The HC-05 Bluetooth module can operate in two primary modes:
Data Mode (Slave Mode):
In this mode, the HC-05 module functions as a slave device, allowing it to communicate with other Bluetooth devices such as smartphones, tablets, or computers. It is primarily used for establishing serial communication between devices.
Command Mode (Master Mode):
In this mode, the HC-05 module can be configured using AT commands. This allows the user to change various settings, such as the baud rate, device name, password, and mode of operation (master or slave). In master mode, the HC-05 can initiate connections with other Bluetooth devices.
These modes allow the HC-05 to be versatile, making it suitable for a variety of applications, including wireless communication between microcontrollers, PCs, and other Bluetooth-enabled devices.