Description

HC-06 is a Bluetooth 2.0 serial communication module used to add wireless UART communication to Arduino, ESP32, and other microcontrollers. It works mainly in slave mode, meaning it connects to phones or other master devices for wireless data transfer.

🔹 Features

✅ Bluetooth 2.0 + EDR
✅ UART serial communication (TX / RX)
✅ Simple 4-pin interface
✅ Easy pairing with Android devices
✅ Default baud rate: 9600
✅ Stable wireless range ~8–10 meters
✅ Works with Arduino, ESP32, STM32, PIC

🔹 Pinout (4 Pins)

• VCC → 3.3V to 5V power supply
• GND → Ground
• TXD → Data output (connect to MCU RX)
• RXD → Data input (connect to MCU TX, use voltage divider if 5V)

🔹 Specifications

• Model: HC-06
• Bluetooth Version: 2.0 + EDR
• Mode: Slave only
• Interface: UART (Serial communication)
• Default Baud Rate: 9600 bps
• Operating Voltage: 3.3V – 5V (module regulated)
• Logic Level: 3.3V (RX pin not 5V tolerant)
• Range: ~10 meters (open space)
• Current Consumption: ~30–40 mA

⚠️ Important Notes

• HC-06 cannot act as master (unlike HC-05)
• RX pin should be protected with resistor divider when using 5V boards
• Works only with devices that support classic Bluetooth (not BLE)

📦 Package Includes

• 1 × HC-06 Bluetooth 4-Pin Module

🔧 Applications

🤖 Robot control via phone
📡 Wireless serial communication
🚗 Bluetooth RC cars
🏠 Smart home projects
📊 Sensor data transmission
🔌 Arduino & ESP32 projects