Iron Man Arc Reactor

A chest light to be worn under a shirt to look like Tony Stark


    Creative Commons Public Domain Dedication

    All rights to this work are waived and you can use it however you please.

    Learn more or download attribution tags


    I made this model and wore it to the SLC Comic-Con 2014. There are two models - the top cover and the "LED holder". The LED holder is more complicated than it needed to be, because I decided to add "dimming" of the LEDs, driven by a microcontroller. I didn't want to spend the money to make a circuit board, so the soldering was done on the back side of the LED holder.

    Notes on building:
    There are lots of holes for LEDs (I used blue). I wired them into 3 banks of LEDs. Since I used a microcontroller, I controlled the banks via MOSFETs, but if you just wanted to turn on the lights, you could just drive the LEDs straight off the battery pack. I kept the battery pack in my pocket, with a cable running up the inside of my shirt to the device. I used an elastic strap to hold the device in place (I ran the strap over one shoulder and under the other arm - running it across my chest made it look weird). I used a small amount of (unused) toilet paper on the inside of the top cover to diffuse the light. When I made it, I did not bother to add a back cover, so I had some electronics touching my undershirt. Over time, it felt a little warm, and tickled somewhat. I don't think the voltage was high enough to notice - I think it was simply something touching slightly.

    I do not own the rights to the Marvel Universe. However, I made this model from scratch, by looking at pictures online.

    Materials and methods


    -These 3D printed parts

    -Battery pack (I used a total of 5 AAs wired together)

    -Battery cable

    -Elastic strap and safety pins

    For less-complicated electronics:

    -28 blue LEDs

    -resistors to limit current (such as 14 50 ohm resistors - 2 LEDs per resistor, or there are
    other configurations)

    For more-complicated electronics:

    -28 blue LEDs

    -14 50 ohm resistors

    -2 MOSFETs (one to control the bank of 16 outer LEDs, one for the middle bank of 8 - the
    inner 4 were powered directly from the microcontroller)

    -PIC16F629 microcontroller

    -22 uF 16V capacitor on the input power



    Issues are used to track todos, bugs or requests. To get started, you could create an issue.


    2fa3d94ec51b26f7a42d48a595cfb80c?default=blank&size=40First Amendment added this to the Costume collection ago
    Mini kennymccormickchenio added this to the Tontas collection ago
    B43b3d9e56107d2b37a20d2abfff1fba?default=blank&size=40Snakefyst added this to the Big Projects collection ago
    64f2b98222e9f62a23bbc61ed5e706ad?default=blank&size=40Kamblor added this to the Marvel collection ago
    226113d9d97d6d827228013e29c8b488?default=blank&size=40Kbmay44 added this to the Cool stuff collection ago
    Mini 238ebde1 7113 438d 9453 267e339e8d88Jason Pittenger added this to the Toys collection ago
    F73193851e3235e2eb4c2b2ad8dd6950?default=blank&size=40Adolfo Barbeito added this to the props collection ago
    59c2b986bdb861d3241220d1becbc3bd?default=blank&size=40jsmith8045 added this to the Cosplay collection ago
    040f736ae7fd3b038650faea098ab5ec?default=blank&size=40Sciuruz added this to the Cosplay collection ago
    0ecbad5d52432013ee2611bc5fa8a97d?default=blank&size=40Nickmdq added this to the Mi Coleccion! collection ago
    02ea859c0d0b1128220f875fb2d96049?default=blank&size=40krzys4 added this to the Zabawki collection ago
    Fd3fbb8f7c0d2b2ae562aeb8fff22239?default=blank&size=40Pablo SuΓ‘rez Quero added this to the games geek collection ago
    8868941f6a32bdf2206f476aa360642b?default=blank&size=40eric777 added this to the Figures collection ago
    Edf1ec9389ed3b6d07ad632eb3b8e937?default=blank&size=40Christian Bosna Eder added this to the Fun collection ago
    A3be5e022a181dff58738a08fd7f1555?default=blank&size=40aieie added this to the iron man collection ago
    934e4bed827658c8827c72316acf3191?default=blank&size=40Emmanuel Halder added this to the DIY collection ago
    4433f94a093bd24f80a1766821990c06?default=blank&size=40Derek Uahinui added this to the Geekery collection ago
    C68f8bd1514637c8a17ff503d9503e15?default=blank&size=40Vezdehod684 added this to the сад collection ago
    C913fa36799f18228b703be91e002c1e?default=blank&size=40wizard04 added this to the Cool collection ago
    Mini bobahelmet1Tommy Napier added this to the Marvel collection ago
    Mini attilaexcite published this design ago