HC-05 Bluetooth Module

Description

Key Features

• Supports Bluetooth Master & Slave modes

• Wireless UART (TX/RX) serial communication

• Configurable using AT commands

• Stable communication up to 10 meters

• Low power consumption

• On-board LED for status indication

• Breadboard-friendly compact design

🔹 Technical Specifications

• Bluetooth Version: 2.0 + EDR

• Frequency Band: 2.4 GHz ISM

• Operating Voltage: 3.3 V

• Input Voltage: 3.6 – 6 V (on-board regulator)

• Communication Interface: UART (Serial)

• Default Baud Rate: 9600 bps (Data mode)

• AT Mode Baud Rate: 38400 bps

• Operating Mode: Master / Slave

• Range: Up to 10 meters

• Security: Pairing with password (default: 1234 / 0000)

🔹 Pin Description

• EN / KEY: AT command mode enable

• VCC: Power supply

• GND: Ground

• TXD: Transmit data

• RXD: Receive data

• STATE: Connection status output

🔹 Applications

• Mobile-controlled robots 🤖

• Wireless home automation 🏠

• Bluetooth-based IoT projects

• Remote data monitoring

• Android app-controlled systems

• Educational & DIY electronics

🔹 Package Includes

• 1 × HC-05 Bluetooth Module