Description

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

Connecting

Code

// 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   #include <SoftwareSerial.h> 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 = ' ';   void setup() { Serial.begin(9600); Serial.println("Enter AT commands:");   // HC-05 default serial speed for communcation mode is 9600 BTserial.begin(9600); }   void loop() { BTserial.println("Bluetooth Test"); Serial.println("Bluetooth Test"); delay(1000); }