"Bellissimo" by Doug Maxwell
https://www.youtube.com/watch?v=_63nqkEmw2U

IoTkazam! There is nothing up my sleeve .. save for this giant WIFI and Bluetooth enabled flash paper igniter.With a sleight of hand .. a touch of the screen .. and poof. No one is paying attention any ways bcz they are looking at their phones too. #MillennialMagic


Ingredients
NodeMCU 12E
HC-05 Bluetooth Module
(3) RC Glow Plugs
(3) 5V Relay Modules
(3) AA Batteries
CR2 3V Battery
Flash Paper

Code

// Magic Flame Hand Thing
// Bluetooth Only Version
// Vije Miller

// Pins
int one = D0;
int two = D1;
int thr = D2;

// Burn Time
int burn = 1500;
int mix_burn = 1500;

void setup() {
  Serial.begin(9600);

  pinMode(one, OUTPUT);
  pinMode(two, OUTPUT);
  pinMode(thr, OUTPUT);

  digitalWrite(one, LOW);
  digitalWrite(two, LOW);
  digitalWrite(thr, LOW);
}

void loop() {

  if (Serial.available())
  {
    char data;
    data = Serial.read();
    if (data == '1') {
      digitalWrite(one, HIGH);
      Serial.write("Yep");
      delay(burn);
      digitalWrite(one, LOW);
    }
    else if (data == '2') {
      digitalWrite(two, HIGH);
      Serial.write("Sure");
      delay(burn);
      digitalWrite(two, LOW);
    }
    else if (data == '3') {
      digitalWrite(thr, HIGH);
      Serial.write("Okay");
      delay(burn);
      digitalWrite(thr, LOW);
    }
    else if (data == '4') {
      digitalWrite(one, HIGH);
      Serial.write("Bomb's Away");
      delay(mix_burn);
      digitalWrite(two, HIGH);
      delay(mix_burn);
      digitalWrite(one, LOW);
      digitalWrite(thr, HIGH);
      delay(mix_burn);
      digitalWrite(two, LOW);
      delay(mix_burn);
      digitalWrite(thr, LOW);
    }
  }

}

Notations
1. Prototype .. read the room.
2. NodeMCU (wifi) + HC-05 (not BLE) + TIP120 (relays) shd be a maker board. "VijeCU"?
3. Bcz the glow plugs are simply resistance wire coils, they are driving current and grounding the circuit. Thus, per this particular purpose, we must use relays .. which is a s/o/b after having had confidence in the transistor model.
4. WTH happen to those Radio Shack drawer 'mini' 5V relays?!
5. Isolate.
6. "Fallen Hero" by Emily M. Klassen

Archive
https://hackaday.io/project/163522-nodemcu-bt-wrist-hand-flame-flash-idk
https://www.audioblocks.com/stock-audio/fallen-hero-153246.html

Trick for treat .. the illusion of proving you are alive .. and alive enough to even enjoy a treat.

This particular project is a carry over from a request to simply 3D print a heart for a 4th grade class demonstration -- and after negotiations negated instead reanimating a heart in a lightning storm .. uh, with an Arduino obviously .. we (me) pitched a pulse driven beating heart .. that in turn rewards your having proved to subsist, with a treat.


Ingredients
Arduino Uno
Servo
(2) 10K Potentiometer
LCD Display
Pulse Sensor
(2) 330 ohm Resistor
1000 uf Capacitor
Piezo Buzzer
2N2222 Transistor
4007 Diode
Neopixels
(2) Toggle Switch
MDF

Code

// Arduino Dead or Alive
// Vije Miller

#include <FastLED.h>
#include <LiquidCrystal.h>
#include <Servo.h>

#define NUM_LEDS 5
CRGB leds[NUM_LEDS];
#define PIN 6

// Beat Var LED
int bpm_led_delay = 500;

// Buzzer Pin
const int ekg = 9;

// LCD
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

// Switch
int aux = 7;
int aux_state = 0;

// Servo
Servo srv;
int st = 110;
int ps = 45;

// Pulse
int pulse = A0
int val;
int tot;
int nxt;
int high;

void setup()
{
  Serial.begin(9600);

  FastLED.addLeds<WS2812, PIN, GRB>
  (leds, NUM_LEDS).setCorrection( TypicalLEDStrip );

  pinMode(ekg, OUTPUT);
  digitalWrite(ekg, LOW);

  pinMode(aux, INPUT);

  srv.attach(10);
  srv.write(st);

  lcd.begin(16, 2);
  lcd.setCursor(0, 0);
  lcd.print("Dead or Alive?");

}

void loop() {
  // Motor and Buzzer Switch On/Off
  aux_state = digitalRead(aux);

  // Reset Value
  tot = 0;
  nxt = 0;
  set_bpm = 0;

  // Smoothing Pulse
  for (int n = 0; n <= 5; n++) {
    for (int i = 0; i <= 25; i++) {
      val = analogRead(pulse);
      tot = val + tot;
      // Display Per Peak
      if (val > 580) { // Adjust
        // If Motor and Buzzer
        if (aux_state == HIGH) {
          beat_led(0xff, 0x00, 0x00);
          delay(bpm_led_delay);
          // If No Motor and Buzzer
        } else if (aux_state == LOW) {
          beat_led_non(0xff, 0x00, 0x00);
          delay(bpm_led_delay);
        }
      }
      delay(2);
    }
    nxt = tot / 25;
    set_bpm = set_bpm + nxt;
  }
  // BPM Maths
  bpm = set_bpm * 12;
  // Not Very Accurate .. Meh!

  if (bpm > 30) {
    lcd.setCursor(0, 0);
    lcd.print("Alive!");
    lcd.setCursor(0, 1);
    lcd.print(bpm);
    lcd.print(" BPM");
  } else if (bpm <= 30) {
    lcd.setCursor(0, 0);
    lcd.print("Undead!");
  }

}


// Neopixel FastLED Fade Red via http://tweaking4all.com
void beat_led(byte red, byte green, byte blue) {
  float r, g, b;
  for (int k = 0; k < 256; k = k + 8) {
    r = (k / 256.0) * red;
    g = (k / 256.0) * green;
    b = (k / 256.0) * blue;
    setAll(r, g, b);
    showStrip();
    digitalWrite(ekg, HIGH);
    srv.write(ps);
  }
  digitalWrite(ekg, LOW);
  srv.write(st);
  for (int k = 255; k >= 0; k = k - 10) {
    r = (k / 256.0) * red;
    g = (k / 256.0) * green;
    b = (k / 256.0) * blue;
    setAll(r, g, b);
    showStrip();
  }
}

void beat_led_non(byte red, byte green, byte blue) {
  float r, g, b;
  for (int k = 0; k < 256; k = k + 8) {
    r = (k / 256.0) * red;
    g = (k / 256.0) * green;
    b = (k / 256.0) * blue;
    setAll(r, g, b);
    showStrip();
  }
  for (int k = 255; k >= 0; k = k - 10) {
    r = (k / 256.0) * red;
    g = (k / 256.0) * green;
    b = (k / 256.0) * blue;
    setAll(r, g, b);
    showStrip();
  }
}

void showStrip() {
#ifdef ADAFRUIT_NEOPIXEL_H
  strip.show();
#endif
#ifndef ADAFRUIT_NEOPIXEL_H
  FastLED.show();
#endif
}

void setPixel(int Pixel, byte red, byte green, byte blue) {
#ifdef ADAFRUIT_NEOPIXEL_H
  strip.setPixelColor(Pixel, strip.Color(red, green, blue));
#endif
#ifndef ADAFRUIT_NEOPIXEL_H
  leds[Pixel].r = red;
  leds[Pixel].g = green;
  leds[Pixel].b = blue;
#endif
}

void setAll(byte red, byte green, byte blue) {
  for (int i = 0; i < NUM_LEDS; i++ ) {
    setPixel(i, red, green, blue);
  }
  showStrip();
}

Notations
1. 'Clear watermelon' filament .. (>_ლ)
2. Censored #$@*!$#% about people, places and things.
3. Extensive modification of https://3dwarehouse.sketchup.com/mod... by Profesor D.
4. Did not earn a TVShow episode bcz .. it had been done.
5. Original concept included a candy dispenser that required evidence of life.

Archive
https://hackaday.io/project/161614-arduino-dead-or-alive
https://3dwarehouse.sketchup.com/model/ufce9d3ab-1e98-442f-afb3-7ed2d09802dd/heart
https://www.thingiverse.com/thing:3186600