HC-05 Bluetooth Module for Arduino

The HC-05 Bluetooth Module is a versatile wireless communication module designed to work in both master and slave configurations. The HC 05 Bluetooth Module is commonly used in applications such as wireless headsets, game controllers, wireless mouse, wireless keyboard, and many other consumer electronics projects.

Pin Configuration

• 1. Enable / Key: Toggle between Data Mode (set low) and AT Command Mode (set high). Default is Data Mode.
• 2. Vcc: Connect to +5V supply voltage to power the module.
• 3. Ground: Connect to system ground.
• 4. TX – Transmitter: Sends serial data. All data received via Bluetooth is output here.
• 5. RX – Receiver: Receives serial data and broadcasts it over Bluetooth.
• 6. State: Connected to on-board LED for feedback to check Bluetooth status.
• 7. LED: Indicates module status: Blink once every 2 sec – Command Mode; Repeated blinking – waiting for connection; Blink twice per sec – Connection successful.
• 8. Button: Controls Key/Enable pin to switch between Data and Command Mode.

Technical Details

• Typical -80dBm sensitivity with up to +4dBm RF transmit power.
• Low power operation: 1.8V, supports 1.8 to 3.6V I/O control.
• UART interface with programmable baud rate for flexible communication.
• Integrated antenna and edge connector for easy integration.

The HC-05 Bluetooth Module is perfect for Arduino and other microcontroller projects, offering reliable wireless connectivity for IoT, robotics, and smart device applications. If you are looking for a reliable HC 05 Bluetooth Module for your projects, this module provides performance, ease of use, and durability.