Monsters INC light up scream canister

Remix uses the same parts and has the LED spacer and code provided for 3 different modes;

PARTS LIST:

-Arduino Nano(https://www.aliexpress.us/item/3256806803424232.html?spm=a2g0o.order_list.order_list_main.10.291e1802LBHJP8&gatewayAdapt=glo2usa)

-5 LEDs (3mm and 5mm work fine)

-MAX4466 Electret Microphone Amplifier Module  (https://www.aliexpress.us/item/3256803832972502.html?spm=a2g0o.order_list.order_list_main.5.327e1802EJjeQU&gatewayAdapt=glo2usa)

- Colored solid core wire makes keeping track of wire easier

-electrical tape/ shrink tube

-prototyping board/breadboard

-superglue/ epoxy/ hot glue

-Power source, I used a phone power bank 

-wago/ wirenuts / way to secure wires

-zipties 

** If you choose to go the breadboard route you won't need to solder otherwise you will. Beware that wires may be pulled from the breadboard while manipulating the canister. You will also need male-to-female wires to connect the microphone to the breadboard. 

Program 1:

This program does not use the microphone and is intended for use in loud environments. light goes up and down at random intervals from 1000-10000ms.

Program 2 :

This program does not use the microphone and is intended for use in loud environments. randomly jumping around between slots is more “flashy”

Program 3:

This program uses the microphone and is intended for use in light to medium sound environments. Will change level based on the sound level around the canister the sensitivity can be tuned via a screw on the microphone module or in the code. 

TIPs

• Place tape over the inside of the LED holder for a more secure fit and poke the led legs through the tape
• Use alternating color for wires to make wiring easier
• Don't solder Arduino directly to the prototyping board use connectors 
• Make sure to leave long enough wires for routing 
• Zip tie wires together towards solder joints to provide some relief
• If soldering, use PPE (glasses). Solder is hot; be careful!
• Make sure wire connections are tight so you don't short circuit anything and have random flickering . 
• Print scream guage is translucent PLA I used gyroid infill  with 20%

Instructions

FOR LEDS

-Use digital io pins 2-6 

-Wire pin 2 to the bottom of the canister and keep wiring up, note that the short leg of LED should be connected to the ground wire  With the long one connected to pin 2, then 3, etc.

FOR MICROPHONE

-Connect microphone out to A0 

-Connect vcc to 3v and grnd to ground 

CODE MODS:

-If you want to change time between cycles, just change the numbers in the rannum function 

int Rannum()

{

  int time;

  time = random(1000,10000); // CHANGE HERE 

  time = abs(time);

  Serial.println(time);

  return time;

}

-1000 is equal to one second. If you want a set time, just remove all the time = stuff and just add time = to whatever time interval you want. 

-The led holder was attached with superglue/CA glue

STICKERS

-svg was purchased from https://www.etsy.com/listing/1075459297/monsters-scream-canister-signs-SVG?ref=yr_purchases

-They were then cut using a cricut

MODEL REMIXED FROM

https://www.printables.com/model/898232-monsters-inc-scream-canister-with-removeable-lid