HC-05 Bluetooth Module

Overview

• HC-05 module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup.
• Serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps Modulation with complete 2.4GHz radio transceiver and baseband. It uses CSR Bluecore 04-External single chip Bluetooth system with CMOS technology and with AFH(Adaptive Frequency Hopping Feature).
• Can be used with the Arduino

Features

• Typical -80dBm sensitivity
• Up to +4dBm RF transmit power
• Low Power 1.8V Operation ,1.8 to 3.6V I/O
• PIO control
• UART interface with programmable baud rate
• With integrated antenna
• With edge connector

Software Specifications

• Default Baud rate: 38400, Data bits:8, Stop bit:1,Parity:No parity, Data control: has. Supported baud rate: 9600,19200,38400,57600,115200,230400,460800.
• Given a rising pulse in PIO0, device will be disconnected.
• Status instruction port PIO1: low-disconnected, high-connected;
• PIO10 and PIO11 can be connected to red and blue led separately. When master and slave are paired, red and blue led blinks 1time/2s in interval, while disconnected only blue led blinks 2 times/s.
• Auto-connects to the last device on power as default.
•  Permit pairing device to connect as default.
• Auto-pairing PINCODE:”0000” as default
• Auto-reconnect in 30 min when disconnected as a result of module going beyond the range of connection.

Applications

• Computer and peripheral devices
• GPS receiver
• Industrial control
• MCU projects

Resources

• Datasheet
• UserManual
• How to interface With Microcontroller.

Note 1: This is a single unit only. We recommend the purchase a USB dongle to interface to a computer if you do not already have access to a computer with Bluetooth connectivity.

Note 2: Do not attach this device directly to a PC RS232 Port. You will need an RS232 to TTL converter circuit if you need to attach this to a computer

Note 3: I/O Pins are not 5V Tolerant , use level converter for interfacing with 5V Microcontrollers