Picture of Flamethrowing Jack-O'-Lantern
A flamethrowing jack-o'-lantern keeps the trick-or-treaters a safe distance from your house and is a fine addition to any anti-Halloween arsenal. At the first sign of any sugar-obsessed imp, simply press the trigger button and wirelessly shoot a one-second burst of flames out of the jack-o'-lantern's mouth. This plume of hellfire will make even the most bold of people think twice about approaching your door. Very few people are willing to risk life and limb for the chance of a tiny box of milk duds.

WARNING!: This pumpkin is extremely dangerous and you definitely should not make one of these. The instructions were posted here are for entertainment purposes only. I do not condone the manufacture or use of flamethrowing jack-o'-lanterns. Seriously, nothing good will come of making one of these. Don't do it.

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Step 1: Go get stuff

Picture of Go get stuff

For carving the jack-o'-lantern, you will need:

- A large pumpkin (mine was probably about 18" in diameter)
- An assortment of cutting knives. Serrated seemed to work the best.
- A marker
- Paper and pencil
- Scissors
- A spoon
- Other scraping implements. I found a chisel worked very well.

For the remote controlled flamethrower:

- Door lock actuator
- SquidBee transmitter and receiver. I had these lying around from a previous project. Any Arduino/Xbee combination should do.
- An extra ATMEGA168 or ATMEGA28 (only if using the Squidbee setup above as the receiver has no chip)
- Small can of WD-40
- 12" x 12" x 1/8" sheet of black acrylic
- SPST 5V relay
- Perfboard
- 5" x 2.5" x 2" project box.
- SPST momentary pushbutton switch
- 10K resistor
- (x2) 9V battery snap
- (x2) M-type plug adapters
- Misc. long zip ties
- 16" x 2" x 1/4" aluminum extrusion
- 3-1/2" x 1/4 bolts
- (x6) 1/4 nuts
- Tea light
- Matches
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lime3D5 months ago

The WD40 formula has changed, and will no longer work for this. You might be able to find aerosol hair spray.

I made something very similar to this last halloween. I removed the pump mechanism from an electric weed sprayer, and secured it inside a jack o lantern. I also connected a gas tank of lighter fluid to the back of the pumpkin, and extended the battery pack by about ten feet and inside my house. I then placed an ordinary candle inside the jack o lantern, and sprayed flame by activating the pump from inside the house. Not exactly wireless, but you couldn't tell how it was powered.

The neat thing about this design was that the tank could be filled with any oother liquid such as water or fake blood. The effect was pretty cool.

Apxeon1 year ago
OMG your porch is made of wood though!

Wood isn't as flammable as most people think.

Thanks for inspiring me. And i try this!
Mr.1 year ago
This is great and I'm sure you'll use it safely but pleases remember that many Halloween costumes are very flammable and you will seriously injure someone if you light them on fire.
kjlpdx1 year ago
easiest would be a wire and switch assuming you're smart enough not to want to fire this without being present and watching. also no stray signals could set it off.
(removed by author or community request)
(removed by author or community request)
easier idea is use 1 of those motion censored air freshners. but angle the tube down ward. an out the front over the candle. uill get the same result. w/o going thro the same programing stuff
wusupworld1 year ago
to late making it hahahahah take that kids who trash my house i'l use a tripwire hahaah
dennist11 year ago
With arduino and a distance sensor, this could make quite a security system! Don't try this at home or anywhere else though - the idea would make this even more dangerous than it already is!
dennist11 year ago
Neat idea, for sure ... but Arduino is a bit overkill. All ya gotta do is power up the actuator. Even real fancy, use a 555 and the relay to limit the on time (to save baking the pumpkin).
baited2 years ago
This is a cool project. You may want to place a diode across the coil on the relay to protect the electronics. And depending on the relay a transistor may be needed to handle the current.
You could havee used the ruler :D
JensonBut2 years ago
I'm rating most of your i'bles 5! Awesome stuff, affordable and compact.
awesome! i wish i had known about this far enough in advance of october 31st to construct it. seems a fairly simple idea just having a remote controllled aerosol can to spray over a flame. i would like to know if there is an easier and cheaper way to set up a remote control system for other projects, i do not have an arduino but surely i can make a transmitter/receiver from basic electronic components or rewiring a remote control car.
RC car would be my suggestion.
mangomango2 years ago
I'm working on my own creation for this halloween and i was wondering if you had problems with your candle getting blown out?
I don't think they actually made this, remember?
tooo awesome!
canida3 years ago
Sweet! Now all you need is a motion/proximity sensor...
a few simple things for a motion prox sensor is to get a cheap motion light from menards or lowes or some store like that and add a relay from 120vac down to what ever your control voltage is this will give you (in test mode) a 5-15 second trip on a 555 ic timer
randofo (author)  canida3 years ago
Maybe next year...
lol... +1 for no warning :)
Alpvax canida3 years ago
The problem being you then have to warn people not to get too close... have it inside a cage for example, so the flames won't reach the person
ElectroFlex2 years ago
Not that I'm trying to make one of these or anything... But, if I were, theoretically, and the actuator was not, hypothetically, not strong enough to press the spray nozzle, how would I make it? Should more battery power do the trick?
randofo (author)  ElectroFlex2 years ago
The motor I use is supposed to run of 12V. Hypothetically... A little more voltage / current, would not hurt.
dlchambers2 years ago
Pretty cool, but the Arduino/XBee is overly complex/expensive.
A 1-channel RF remote like this would be much easier/cheaper/faster:
this is probobly the most epic pumkin i have ever seen.... ever
i am geussing you don't get many trick or treaters huh
tinker2343 years ago
wow that be so funny to make it work at a angel above trick or tr eater and blow flames
Annix153 years ago
LOL, this is awesome, what if someone passed by and the pumpkin starting throwing fire out of its mouth!!

Dude who is passing by: pit pat pit pat, walks up stairs to knocks on door*
Flame throwing Pumpkin: Starts breathing fire out*
Dude: AHHHHHH, jumps back and falls of patio*
Flame throwing pumpkin: MWHAHAHAHAHA
black hole3 years ago
This is hilarious! You've got my vote.
bernynhel3 years ago
Cool! I did the same thing with my articulated cardboard skeleton on the front door of my pad using a flex line to extend the natural gas from behind my kitchen range/oven to the peephole on the door - motion detector > solenoid > flex-line to nozzle from a fireplace ceramic log kit to concentrate/direct flame at peephole. Adjusting the gas flow at the source resulted in flame range from the answer to "Got a light?" all the way to the center line of the street in front of the house! There were 18 of those nozzles to share the gas feed in the fireplace kit I cannibalized the nozzle from so... chose halfway between front door and the sidewalk, and, being self contained with unlimited fuel supply, you can just turn it on, cross your fingers that the Gas Co delivers @ constant pressure and forget about it!
vinnyjojo3 years ago
Awesome as always, Randofo. Keep em' coming
nspirit3 years ago
I WON'T ring your home for sure XD
tha_jaker3 years ago
wow........ not much else to say......
s005003 years ago

But i used servo and a 555 timer ic another remote and a lever to trigger
great project
ytashi3 years ago
OWH MY GAWD!!!! THIS IS SO DAMN COOL! now i want like a DOZEN? hehehe!
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