HC-05 Bluetooth Module

The HC-05 Bluetooth module is a popular and easy-to-use wireless communication device designed for serial communication. It operates over Bluetooth Classic and can be configured as either a master or slave device. The module allows microcontrollers like Arduino or ESP32 to communicate wirelessly with smartphones, computers, or other Bluetooth-enabled devices over a short range (up to 10 meters). It uses the Serial Port Profile (SPP), making it ideal for data transmission in projects such as wireless control, home automation, and robotics. The HC-05 supports both 3.3V and 5V systems, making it versatile for various applications.