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.
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