Polymythic

Half Hour Halloween Hack

by on Oct.30, 2009, under technoPHILE

Skull furious you have entered his space

Skull furious you have entered his space

Halloween came out of nowhere this year for me. I have not had the time to do much of anything having just moved into a new house, so I took it upon myself to quickly whip up something to get into the Halloween mood. I was at a local store and saw these little foam skulls for $1.50 and grabbed a couple.  Its fun to see what can be made quickly, and now I have something to put outside when the trick-or-treaters arrive.

The materials:

Parallax Infrared Motion Sensor #555-28027

ioBridge Control Module + Servo Smart Board (or arduino + motor shield, if preferred)

Hobbyist Servo

Resistor

Glue Gun

Mini-breadboard (I used my arduino protoshield from adafruit)

Some wire

2 Red Leds

Sharpie

Foam Skull

1 Sock (yeah, the hood is a black sock)

The object here was to simply make the skull do something when someone approached. I know this is FAR from original, but hey, I was pressed for time (and want to show that simple projects are really accessible to ANYONE) and didn’t want to do much planning. So, the project was born.  I know I am not breaking any new ground here, but it didn’t detract from my bliss at annoying any co-worker who stepped in my office for the last 2 days.  It did make the meetings more fun when the skull open his mouth to speak whenever a colleague would adjust their chair!

Steps:

Foam skull purchased for $1.50.

Foam skull purchased for $1.50.

1- Took a saw to the lower jaw of the foam skull to detach it.

Lower jaw has been sawn off so it can be hinged

Lower jaw has been sawn off so it can be hinged

2- Bored 2 holes through the eye sockets out the back of the skull to run the LEDs and wires through

Bored 2 eyes into sockets to run LEDs into.

Bored 2 eyes into sockets to run LEDs into.

Testing that the LEDs are working and solder joints didn't break when inserting into skull.

Testing that the LEDs are working and solder joints didn't break when inserting into skull.

3- Attached 2 long wires to the LED leads (drop of solder on each lead)

4- Whipped up a little rig for the servo and skull to sit on

5- Glue gunned lower jaw onto servo rig

Used glue gun to affix lower jaw.

Used glue gun to affix lower jaw.

6- Used sharpie to color in jaw (previously white because of styrofoam) and teeth.

7- Ran wires appropriately: (Digital Output -- Eyes, Motion Sensor -- Digital In, Servo Smartboard -Channel 1)

ioBridge wired up.

ioBridge wired up.

Parallax Infrared Motion Sensor #555-28027

Parallax Infrared Motion Sensor #555-28027 on a protoshield from adafruit.

8- Set up messaging and triggers on ioBridge (or read digital input and write outputs if using arduino)

Note: I was actually unaware that the messaging and triggers for ioBridge were there, and they are easy to use (basically following the mantra of the platform).  For an arduino, a simple read from the digitalIO and write to a PWM output using the servo library would do the trick, no problem!

Mouth closed.

Mouth closed.

Mouth opened.

Mouth opened.

9- Put sock over the skull

Skull with hood (not a gold-toe).

Skull with hood (not a gold-toe).

10- Annoy co-workers or greet tricker treaters.

HAPPY HALLOWEEN!

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3 comments for this entry:
  1. ioBridge Projects» Halloween Project Round Up

    [...] Jaw Dropping Skull (aka the Half Hour Hallow Hack) by Steve from Polymythic [...]

  2. Frost

    Excellent. Skeletor approves. I’m glad you continue to put your Construx to use.

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