HC-05 Bluetooth Module with TTL Output

The HC-05 Bluetooth Module is a powerful and affordable solution for wireless serial communication over Bluetooth. Featuring TTL output, it allows seamless integration with microcontrollers like Arduino, ESP32, STM32, and Raspberry Pi for data exchange, wireless control, and IoT projects.

The module supports Bluetooth SPP (Serial Port Protocol), enabling reliable, bidirectional communication. It can be configured as either Master or Slave using AT commands. The onboard EN (key) pin allows switching between data and command modes, making the HC-05 ideal for a wide range of Bluetooth-based wireless applications.

Key Features:

• Bluetooth v2.0+EDR (Class 2) with up to 10m range
• Supports Master and Slave modes
• TTL-level UART interface (3.3V logic)
• Baud rate configurable via AT commands
• LED indicator for pairing and communication status
• Default baud rate: 9600 bps
• Operating voltage: 3.6V to 6V, logic level: 3.3V

Applications:

• Wireless data transfer between microcontrollers
• Remote control of Arduino-based devices
• Wireless programming and debugging
• Home automation via Bluetooth
• Robotics and serial communication projects
• DIY electronics and IoT modules