Improved arm mounted flame thrower

prometheus-flame-thrower[Everett] is at it again with Prometheus, an arm mounted flame thrower.This is the third generation of the project and makes some huge advances over the second generation we saw last year. We’d say he’s reached cinema/stage-performance quality with his design.

The self-contained system is completely arm mounted with a fuel reservoir mounting behind the elbow. The new version adds an adjustable flow valve actuated by a servo motor to regulate the flame size. An arc generator has been incorporated to replace the lighter from the last version. A microcontroller measures wrist angle and takes care of creating the arc and regulating the fuel supply.

Prometheus is small, controllable, and frightening. See a full demonstration as well as some video of the prototyping process after the break. Does this make you wonder how much burn cream [Evertt's] needed over the years?

Extended demonstration video.

Build log video.


  1. Matt says:

    This is how super-villains get started.

  2. Rory says:

    Thats really cool.I’d make one of them…

  3. phil says:

    anyone else see a dragon/snake with fangs in that first picture

  4. Tercio says:

    He should feel himself the Pyro – a character of X-Men comics… =)
    Very cool!

  5. dave says:

    That idiot set his hand on fire at 0:54 in the first video!

  6. khani3s says:

    I never use something like that without wearing a heavy leather glove.

  7. andi says:

    I still see the need for an emergency cut off – sensing a jerk reaction, for example – but I must admit that this… this…

    is mighty cool.

  8. chicosoft says:

    One day something goes bad and his arm goes booom..

    But that is a cool hack…

  9. Cody says:

    This on one arm, ( That guy’s tazer glove on the other, and you got a super villain.

  10. emuboy says:

    this is dangerus…not the ArduNIX….

    hu…can I have an arduino shell of this? :D

  11. filgy says:

    I wonder.. could a battery powered air compressor with an electronically controlled regulator be added to increase the flame height? :)

    I also wonder if he smears his arm with a flame retardant gell of some sort.. :)

  12. defyboy says:

    Greak work Everett, thanks Hackaday

  13. durp says:

    That is all kinds of awesome!

  14. vonskippy says:

    Playing with fire – yeah, that’s a good idea.

  15. The third generation is awesome! Great video and post!

  16. mowcius says:

    How black do you think his ceiling is now!

    I would prefer one like Tony Stark’s personally.
    The taser one linked looks kinda cool too.


  17. Unreal says:

    Looks very similar to some of the pyro used by Rammstein in their live gigs.

  18. TedH says:

    Anyone interested in laying bets an how long it is before we see the headline “Fool inventor burns face off”?

  19. Spadefinger says:

    Awesome. Absolutely friggin awesome.

    Yeah, that was the first thing I noticed too. I’m wondering if it was photoshopped. It’s a good pic either way.

  20. Jerome says:

    and you guys tell me to wear a helmet when I drive my 25mph electric scooter!


  21. Jerome says:

    for project like that, I would of use high quality servo or simply use tiny geared motor like the old Sanyo motors from

  22. Me says:

    Everett is hot!

  23. Andy says:

    I would definately think twice before shaking his hand.

  24. DanAdamKOF says:


  25. pookeye says:

    … and the point of this is….what?

    I’m not being a troll… I really don’t understand the point of this.

  26. Pat says:

    Hey, I used to work with this guy, and he knows what he’s doing. No, it’s not photoshopped Spadefinger. I’ve seen it in real life, or at least a prototype of his first one. He’s the real deal guys, a real true hacker, and an amazing mind.

  27. Hackius says:

    That is awesome but there’s no social setting I can imagine that I can show that and not get looks.

    Very awesome nevertheless.

  28. aztraph says:

    way to bang the rocks together!

  29. Skitchin says:

    lol @ Jerome, true nuff. I consider myself a pyro, hell, even a risk taker – but a flame like that indoors is beyond ballsy.


  30. monkeyslayer56 says:

    this is one REALLY sweet hack/build
    2 thumbs up =D

  31. nope says:

    Mmmmm. The world needs more crazy inventive people to take risks like this. How else are we gonna get super powers?

  32. Chris says:

    Great work Everett! I totally wanna play with this next time you’re in Troy!


  33. thach says:

    That’s cool. Some suggestion though. He should have the chip monitor his middle finger extensor muscle rather than his wrist motion. that way he can monitor how fast he open his hand. Doing so you can make it start the arc when you open you hand quickly as if you want to start a fire ball. Then to control the intensity of the flame he could monitor his bicept muscle. By flexing your bicept you get a larger flame.

  34. moo says:

    the flame looks like a cobra or dragon or something o.0

  35. bhartley says:

    Now all he needs is one for his left hand that shoots water.

  36. Dere says:

    how many times you think he burnt him self??

  37. PocketBrain says:

    Ahh, but will you use this power for good, or evil?

    Unkind that you did not normalize the audio in the two videos. The second one came out LOUD as we have turned up the volume to hear you speak in the first.

  38. Derrick says:

    Combine this with that arduino hack of the force trainer toy and the possibilities are *endless*.

    Alphawave controlled pressure boost? Yes please. Well… it could have… unfortunate consequences if you somehow lit yourself on fire and got overly anxious about the whole burning thing. But still.

  39. khani3s says:

    @bhartley: Now all he needs is one for his left hand that shoots water.

    Liquid Nitrogen is much better (and dangerous).
    Or maybe ultracool alcohol luncher!!!!
    Very cold and sticky. And you can set fire after!!!

  40. I use something exactly like that all the time every day.
    I never use something like that without eating a heavy leather glove

  41. cde says:

    Playing with fire is how humanity went from animals to toll users. Playing with fire was the start of human civilization, our first invention, and the first real sentient manipulation of our environment.

    Playing with fire is a good thing.

  42. Robert says:


    Playing with fire-dangerous
    Making a hand made flamethrower-more dangerous
    Making a hand made, hand mounted flamethrower-even more dangerous
    Making a hand made, hand mounted flamethrower WITHOUT THE USE OF FIREPROOF GLOVES-Insane.

  43. k0ldBurn says:

    Robert has a point, this is awesome but he should really have gloves on, and possibly something more fire resistant than a t-shirt or a mask. Nobody thinks that they’ll blast themselves in the face with something like this but it can happen.

  44. Ben says:

    55 seconds in you seem too have a problem with a constant amount of fluid being released when you move around.

    Hopefully you didn’t burn your hand lol

  45. teck monkey says:

    i like the idea alot and the hack for the forcetrainer.a machinic’s heat-resistent/or fire proof glove would be a good idea..also i agree with placing the flexsensor on all of the fingers would save them from getting burned…gives me EVIL ideas for some armor >:)

  46. darkshadow6921 says:

    Evil is born, and only one Firefighter can bring him to justice or die trying.

    Coming soon to theaters near you.

    (dang narrators voice in my head again)

  47. bullygram says:

    this project is cool.but safety should be always first!

  48. thinking says:

    Iron man may be fictional but since he is a tech hero then someday he could become an actual superhero. I wish creative people like this would become rich so they could fund more research.

  49. nin82 says:

    this was my explanation 12 years ago for ken and ryu x)

  50. Spork says:

    Just wanted to point out that he obviously knows what he is doing and that fire is dangerous.
    You people type like he is 12 years old.

    Nice build, looks like it would be all kinds of fun for special effects and toasting marshmallows.

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