Room LED Strip with Music Integration

Need Help With My Project
1

Hey Guys!
I have an Idea for equipping my Room with an ~30 m LED Strip and I Need your Guys help for Setting it up!
It should be possible to Controll it via Blynk at it would be very nice if I could let it blink with the Music i Play on my Smartphone or via an AUX Port so that the ryrthm of the LED Strip is the same as the rythm of the Music.

I really hope you guys can help me and tell me how to do it! :grin:

2

Get microphone (you need amplifier circuit and other stuff but there are modules for that) connect it to uC and do some DSP - Fast fourier transformation on samples you acquire. You can extract particular frequencies of the sound and display it using LEDs. Enjoy😄

3

I don’t know if you’re still interested, but a friend of mine built this Music Reactive LED Strip for his room. I’ve built my own version and have integrated Blynk into it to turn it on and off remotely with the help of virtual pins.

4

Wow Zach that is cool! Do you have the code you used to integrate it with Blynk? This may be my next project…

5

It’s actually super simple! The Neopixel LED strip is controlled by an Arduino Uno. That Uno is hooked up to a NodeMCU ESP8266 and just sends a HIGH or LOW via GPIO to the Uno.

Something like this:
Uno:

void setup(){
   pinMode(5, INPUT);
}
void loop(){
   if(digitalRead(5) == HIGH)
      neopixelMethod();
   else
     neopixelOff();
}

NodeMCU ESP8266:

#include <BlynkSimpleEsp8266.h>
#include <SimpleTimer.h>

const char* ssid = "networkName";
const char* password = "networkPassword";

//Blynk Auth
char auth[] = "xxxxxxxxxxxxxxxxxxxxxxxxxxxx;

boolean nextLEDState = 0;
boolean currentLEDState = 0;

BLYNK_WRITE(V0){
  nextLEDState = param.asInt(); // assigning incoming value from Blynk virtual pin 0 to a variable
}

void setup(void){
   Blynk.begin(auth, ssid, password);
   pinMode(V0, INPUT);
   pinMode(D2, OUTPUT);
   timer.setInterval(500L, updateAllSystems);
}

void loop(void){
   if(Blynk.connected()){
      Blynk.run();
   }
   timer.run();
}
   //Obviously could contain more methods, but for the sake of this demo, there is only one
   void updateAllSystems(){
      updateLED();
   }
   
   //logic for LED
   void updateLED(){
     //if light should be on, turn on light
     if(nextLEDState == 1 && currentLEDState == 0){
       LEDon();
     }//if light should be off, turn off light 
     else if(nextLEDState == 0 & currentLEDState == 1){
       LEDoff();
     }
   }

   //writes to GPIO, updates current LED state, and updates Blynk app   
   void LEDon(){
       digitalWrite(D2, HIGH);
       currentLEDState = 1;
       Blynk.virtualWrite(1, 1);
       Blynk.syncVirtual(1);
   }
   
   //writes to GPIO, updates current LED state, and updates Blynk app
   void LEDoff(){
       digitalWrite(D2, LOW);
       currentLEDState = 0; 
       Blynk.virtualWrite(1, 0);
       Blynk.syncVirtual(1);
   }
}

After writing this code, I realize it looks a little complicated on the ESP8266 side, but trust me, it’s more a matter of me being bad at writing efficient code than it is being complicated. Anyhow, cheers and let me know if you have any more questions!

6

This is great, can you post a link to the Schematics or take pictures of the wiring and setup?