8 Channel Bluetooth Controller Switch//(In Hindi)//(DIY) 

No bro rx pin of hc05 is connected to tx of arduino and tx pin connect to rx of arduino and connect the hc05 to 5v which is provided in arduino board

@@letmindcreativebut the tx pin of arduino is 5v also, so directly connecting may be unsafe?

@@aiyolo2914 no bro use arduino 5v pin to provide 5v to hc05 module and connect rx to to tx and tx to rx of arduino module simple

Yes but, other processes or programing required to make this

@@letmindcreative Thanks

#include SoftwareSerial BTSerial(D5, D6); // RX (HC-05 TX), TX (HC-05 RX) const int RelayPins[] = {D0, D1, D2, D3}; int activeRelay = -1; void setup() { for (int i = 0; i < 4; i++) { pinMode(relayPins[i], OUTPUT); digitalWrite(RelayPins[i], HIGH); // Initialize Relays to OFF } BTSerial.begin(9600); } void loop() { if (activeRelay >= 0 && activeRelay < 4) { digitalWrite(RelayPins[activeRelay], HIGH); activeRelay = -1; // Reset activeRelay } if (BTSerial.available()) { char command = BTSerial.read(); int newRelay = -1; // Initialize to an invalid Relay switch (command) { case '1': newRelay = 0; // Relay 1 break; case '2': newRelay = 1; // Relay 2 break; case '3': newRelay = 2; // Relay 3 break; case '4': newRelay = 3; // Relay 4 break; default: // Invalid command break; } // Check if a valid Relay command was received if (newRelay >= 0 && newRelay < 4) { // Turn off the currently active Relay (if any) if (activeRelay >= 0 && activeRelay < 4) { digitalWrite(RelayPins[activeRelay], HIGH); } // Turn on the new Relay digitalWrite(RelayPins[newRelay], LOW); activeRelay = newRelay; // Update activeRelay } }\ } } //@@letmindcreative

Youcan increase the number of relays by changing max loop value to your desired value and adding pins to the *RelayPins[i[={}* section

How can I help you sir ??

Kon sa aap bro

@@letmindcreative Bhai Vahi jo discription me aap ka link diya hai play store se open hota hai par install nahi hota hai kya kare bhai..🙏🏻🙏🏻🙏🏻