How to Interface HC-05 with Arduino UNO
Overview of Bluetooth HC-05 Bluetooth Module The HC-05 is a Bluetooth module used for wireless communication with Bluetooth-enabled devices, such as smartphones. It communicates with microcontrollers via serial communication (USART). The default settings of the HC-05 Bluetooth module can be modified using specific AT commands. Since the HC-05 module operates at a 3.3V logic level …