HC-05 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). It has the footprint as small as 12.7mmx27mm. Hope it will simplify your overall design/development cycle.
HC-05 Bluetooth Module 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
// Basic Bluetooth sketch
// Sends "Bluetooth Test" to the serial monitor and the software serial once every second.
// Connect the HC-05 module and data over Bluetooth
// The HC-05 defaults to commincation mode when first powered on.
// The default baud rate for communication is 9600
SoftwareSerial BTserial(2, 3); // RX | TX
// Connect the BlueTooth TX to Arduino pin 2 RX.
// Connect the BlueTooth RX to Arduino pin 3 TX through a voltage divider.
char c = ' ';
Serial.println("Enter AT commands:");
// HC-05 default serial speed for communcation mode is 9600