Arduino/Raspberry Pi website controllable Christmas lights

Use a Raspberry Pi and Arduino UNO to control Christmas lights with a website/app and sync music with it!

IntermediateShowcase (no instructions)816

Arduino/Raspberry Pi website controllable Christmas lights

Things used in this project

Hardware components

Raspberry Pi 4 Model B

Arduino UNO

LED (generic)

USB-A to B Cable

Buzzer

Jumper wires (generic)

Software apps and online services

Arduino IDE

Raspberry Pi Raspbian

Story

This project is great for Christmas time and a perfect way to change up your tree. It's fun, customizable, cheap, and not hard to do.

What you'll need:

Code

import serial
import time
import RPi.GPIO as GPIO
from flask import Flask, render_template, request
app = Flask(__name__)

GPIO.setmode(GPIO.BCM)

if __name__ == 'main':
    ser = serial.Serial('/dev/ttyACM0',9600, timeout=1)
    ser.flush()

pins = {
   15 : {'name' : 'LIGHTS', 'state' : GPIO.LOW},
   14 : {'name' : 'TREE','state' : GPIO.LOW},
   9 : {'name' : 'JINGLE BELLS LIGHTS', 'state' : GPIO.LOW}
   }

for pin in pins:
   GPIO.setup(pin, GPIO.OUT)
   GPIO.output(pin, GPIO.LOW)

@app.route("/")
def main():
   for pin in pins:
      pins[pin]['state'] = GPIO.input(pin)
   templateData = {
      'pins' : pins
      }
   return render_template('main.html', **templateData)

@app.route("/<changePin>/<action>")
def action(changePin, action):
   changePin = int(changePin)
   deviceName = pins[changePin]['name']
   if action == "on":
      if changePin == 9:
        GPIO.output(changePin, GPIO.LOW)
        ser = serial.Serial('/dev/ttyACM0',9600, timeout=1)
        ser.write(b"RESET NOW")
      if changePin == 14:
        GPIO.output(changePin, GPIO.HIGH)
      if changePin == 15:
        GPIO.output(changePin, GPIO.HIGH)
      message = "Turned " + deviceName + " on."
   if action == "off":
      GPIO.output(changePin, GPIO.LOW)
      message = "Turned " + deviceName + " off."

   for pin in pins:
      pins[pin]['state'] = GPIO.input(pin)

   templateData = {
      'pins' : pins
   }

   return render_template('main.html', **templateData)

if __name__ == "__main__":
   app.run(host='raspberry pi IP here', port=80, debug=True)

<!DOCTYPE html>
<head>
   <title>LED X-Mas Light</title>
   <meta name="viewport" content="width=device-width">
<style>
.test{
    height:200px;
    width:200px;
}

.block {
  display: block;
  width: 326px;
  height: 100px;
  border: none;
  background-color: #008ae6;
  padding: 14px 28px;
  font-size: 16px;
  cursor: pointer;
  text-align: center;
}
</style>
</head>

<body>
   <h1>LED X-Mas Lights</h1>
   {% for pin in pins %}
   <h2>{{ pins[pin].name }}
   {% if pins[pin].state == true %}
      is currently <strong>on</strong></h2><div class="row"><div class="col-md-2">
      <a href="/{{pin}}/off" class="block" role="button">Turn off</a></div></div>
   {% else %}
      is currently <strong>off</strong></h2><div class="row"><div class="col-md-2">
      <a href="/{{pin}}/on" class="block" role="button">Turn on</a></div></div>
   {% endif %}
   {% endfor %}
</body>
</html>

// Jingle Bells + Raspberry Pi BUS Restart
#include "pitches.h"

int melody[] = {
  NOTE_D4, NOTE_B4, NOTE_A4, NOTE_G4, NOTE_D4, NOTE_D4, NOTE_D4,
  NOTE_D4, NOTE_B4, NOTE_A4, NOTE_G4, NOTE_E4,
  NOTE_E4, NOTE_C5, NOTE_B4, NOTE_A4, NOTE_FS4,
  NOTE_D5, NOTE_D5, NOTE_C5, NOTE_A4, NOTE_B4, NOTE_D4,
  NOTE_D4, NOTE_B4, NOTE_A4, NOTE_G4, NOTE_D4, NOTE_D4, NOTE_D4,
  NOTE_D4, NOTE_B4, NOTE_A4, NOTE_G4, NOTE_E4, NOTE_E4,
  NOTE_E4, NOTE_C5, NOTE_B4, NOTE_A4, NOTE_D5, NOTE_D5, NOTE_D5, NOTE_D5,
  NOTE_E5, NOTE_D5, NOTE_C5, NOTE_A4, NOTE_G4,
  NOTE_B4, NOTE_B4, NOTE_B4, NOTE_B4, NOTE_B4, NOTE_B4,
  NOTE_B4, NOTE_D5, NOTE_G4, NOTE_A4, NOTE_B4,
  NOTE_C5, NOTE_C5, NOTE_C5, NOTE_C5, NOTE_C5, NOTE_B4, NOTE_B4, NOTE_B4, NOTE_B4,
  NOTE_B4, NOTE_A4, NOTE_A4, NOTE_B4, NOTE_A4, NOTE_D5,
  NOTE_B4, NOTE_B4, NOTE_B4, NOTE_B4, NOTE_B4, NOTE_B4,
  NOTE_B4, NOTE_D5, NOTE_G4, NOTE_A4, NOTE_B4,
  NOTE_C5, NOTE_C5, NOTE_C5, NOTE_C5, NOTE_C5, NOTE_B4, NOTE_B4, NOTE_B4, NOTE_B4,
  NOTE_D5, NOTE_D5, NOTE_C5, NOTE_A4, NOTE_G4 };

int noteDurations[] = {

  8, 8, 8, 8, 3, 16, 16,
  8, 8, 8, 8, 2,
  8, 8, 8, 8, 2, 
  8, 8, 8, 8, 3, 8,
  8, 8, 8, 8, 3, 16, 16,
  8, 8, 8, 8, 3, 8,
  8, 8, 8, 8, 8, 8, 8, 8,
  8, 8, 8, 8, 2,
  8, 8, 4, 8, 8, 4,
  8, 8, 6, 16, 2,
  8, 8, 6, 16, 8, 8, 8, 16, 16,
  8, 8, 8, 8, 4, 4,
  8, 8, 4, 8, 8, 4, 8, 8, 6, 16, 2,
  8, 8, 6, 16, 8, 8, 8, 16, 16,
  8, 8, 8, 8, 2 };

void setup() {
    pinMode(3,OUTPUT);
    pinMode(6,OUTPUT);
    pinMode(9,OUTPUT);
    pinMode(11,OUTPUT);
    digitalWrite(3, LOW);
    digitalWrite(6, LOW);
    digitalWrite(9, LOW);
    digitalWrite(11, LOW);
  for (int thisNote = 0; thisNote < 100; thisNote++) {

    int noteDuration = 1800/noteDurations[thisNote];
    // I found that by lengthening the noteDuration,
    // I was able to "slow" the song down.
    tone(7, melody[thisNote],noteDuration);
    LEDon();

    int pauseBetweenNotes = noteDuration * 1.30;
    delay(pauseBetweenNotes);
    // stop the tone playing:
    noTone(7);
    LEDoff();
  }
}

void loop() {

}

int currentLEDpin=3;
void LEDon()
{
    digitalWrite(currentLEDpin, HIGH);
}

void LEDoff()
{
    digitalWrite(currentLEDpin, LOW);
    if (currentLEDpin==3) currentLEDpin=9;
    else if (currentLEDpin==3) currentLEDpin=9;
    else if (currentLEDpin==9) currentLEDpin=3;
    else currentLEDpin=9;
}

void software_Reset()
{
asm volatile ("  jmp 0");  
}