HC-06

HC-06 Arduino Android Bluetooth Wireless Serial Transceiver Module (5V) – 1 Pc

Product Overview

The HC-06 Bluetooth serial transceiver module is designed for reliable wireless communication between microcontrollers and Bluetooth-enabled devices. Based on the HC-06 core module, it provides a simple serial interface and operates in transparent transmission mode after pairing, eliminating the need for Bluetooth protocol knowledge.

Key Features

• HC-06 core module with onboard interface pins: VCC, GND, TXD, RXD, and reserved LED status output pin

• LED status indicator:

  • Blinking: Bluetooth not connected

  • Solid on: Bluetooth connected and serial port open

• Input voltage range: 3.6–6V (recommended 3.3V backplane)

• Current consumption:

  • ~30 mA when unpaired

  • ~10 mA after pairing

• Maximum input voltage: 7V (do not exceed)

• 3.3V logic level interface

• Compatible with multiple microcontrollers including 51, AVR, PIC, ARM, MSP430, and others

• Can be directly connected to 5V microcontrollers without MAX232

• Effective communication distance of approximately 10 meters (longer distances possible with reduced connection quality)

• Supports full-duplex serial communication after pairing

• Communication format support: 8 data bits, 1 stop bit, no parity (only this standard format is supported)

• AT command configuration (baud rate, name, password, power-saving parameters) available before Bluetooth pairing

• Automatically switches to transparent passthrough mode after successful connection

• SMT-manufactured for consistent quality

• Enclosed in transparent heat-shrink tubing for dust protection, improved appearance, and basic anti-static protection

Physical Characteristics

• Compact size: 3.57 cm × 1.52 cm

Compatibility Notes

• Designed as a slave device

• Can pair with Bluetooth-enabled computers, hosts, and most Bluetooth mobile phones, PDAs, PSPs, and other smart terminals

• Does not support pairing between two slave devices

TXD / RXD Connection Guidelines

• TXD (Transmit): Sends data

• RXD (Receive): Receives data

• For normal communication, TXD of one device must connect to RXD of the other device

• For loopback testing, connect TXD directly to RXD on the same module to quickly verify send/receive functionality

This HC-06 Bluetooth module offers a compact, easy-to-use solution for wireless serial communication in embedded and microcontroller-based projects.