TTL HC05 O/P Bluetooth Module (Master + Slave) Compatiable Economical Version with Button

Applications :

• Wireless Data Transmission: Send and receive data between devices such as microcontrollers, smartphones, or computers.

• Home Automation: Control home appliances like lights, fans, and security systems via Bluetooth from a mobile device.

• Wireless Robotics: Enable wireless control of robots or drones using Bluetooth communication.

• PC to Microcontroller Communication: Establish communication between a PC and microcontroller (e.g., Arduino) for data exchange.

• Sensor Monitoring: Wirelessly transmits sensor data (temperature, humidity, etc.) to a mobile app or PC.

Physical Attributes

Integration with Arduino

Sample Code

//https://kitsguru.myshopify.com/products/ttl-o-p-bluetooth-module-master-slave-hc05

#include <SoftwareSerial.h>

#define rxPin 2

#define txPin 3

#define baudrate 38400

String msg;

SoftwareSerial hc05(rxPin ,txPin);

void setup(){

pinMode(rxPin,INPUT);

pinMode(txPin,OUTPUT);

Serial.begin(9600);

Serial.println("ENTER AT Commands:");

hc05.begin(baudrate);

}

void loop(){

readSerialPort();

if(msg!="") hc05.println(msg);

if (hc05.available()>0){

Serial.write(hc05.read());

}

}

void readSerialPort(){

msg="";

while (Serial.available()) {

delay(10);

if (Serial.available() >0) {

char c = Serial.read(); //gets one byte from serial buffer

msg += c; //makes the string readString

}

}

}

//https://www.aranacorp.com/en/arduino-and-bluetooth-module-hc-05/ Integration with Raspberry Pi   Sample Code import subprocess import select import serial class SerialComm: def __init__(self): self.port = serial.Serial("/dev/ttyAMA0", baudrate=9600, timeout=1) //https://kitsguru.com/products/hc-06-4-pin-bluetooth-module-slave-no-button def read_serial(self): res = self.port.read(50) if len(res): return res.splitlines() else: return [] def send_serial(self, text): self.port.write(text) class ShellWrapper: def __init__(self): self.ps = subprocess.Popen(['bash'], stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE) def execute_command(self, command): self.ps.stdin.write(command + "\n") def get_output(self): timeout = False time_limit = .5 lines = [] while not timeout: poll_result = select.select([self.ps.stdout, self.ps.stderr], [], [], time_limit)[0] if len(poll_result): for p in poll_result: lines.append(p.readline()) else: timeout = True return lines def main(): shell = ShellWrapper() ble_comm = SerialComm() while True: out = ble_comm.read_serial() for ble_line in out: print(out) shell.execute_command(ble_line) shell_out = shell.get_output() for l in shell_out: print(l) ble_comm.send_serial(l) if __name__ == "__main__": main() Package Includes 1 x TTL HC05 O/P Bluetooth Module (Master + Slave) Compatiable Economical Version with Button