The HC-05 is a popular Bluetooth module commonly used for wireless communication between electronic devices. It is based on the Bluetooth 2.0+EDR (Enhanced Data Rate) standard and is designed for easy integration into various projects.
The module allows devices to establish a Bluetooth connection and communicate wirelessly over short distances, typically up to 10 meters. It supports both the Bluetooth Serial Port Profile (SPP) and the Bluetooth Master-Slave mode, making it compatible with a wide range of devices and applications.
The module operates using a simple serial communication interface (UART), allowing microcontrollers or other devices with UART capabilities to send and receive data wirelessly. It can be configured as a master or slave device, enabling it to establish connections with other Bluetooth devices.
The HC-05 module requires power (typically 3.3V) and can be controlled using AT commands, which enable users to configure various parameters such as device name, baud rate, security settings, and pairing modes.
Overall, the HC-05 is a cost-effective and widely used Bluetooth module that provides a convenient way to add wireless communication capabilities to projects such as robotics, home automation, and data logging, among others.