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DIY 3D Printed Arc Reactor (Arduino/ATtiny85, Transistors, CAD, …

DIY 3D Printed Arc Reactor (Arduino/ATtiny85, Transistors, CAD, ...

To celebrate the release of "Avengers: Infinity War," check out this tutorial about how to make your own, screen-accurate DIY 3D printed Arc Reactor from the movie Iron Man!

The STL files for the arc reactor can be found at:

The ATTiny85 code, PCB design files, and dimensioned drawing can be downloaded here:

Don't want to deal with PCB design files? Order a bare copy of the circuit board here: LINK COMING SOON!

Tiny AVR Programmer tutorial:

ATTiny85 programming tutorial:

BILL OF MATERIALS (Amazon links are affiliate links):

- Clear PLA 3D printer filament:
- Gray PLA 3D printer filament:
- Gold PLA 3D printer filament:
- 30 gauge enamel coated magnet wire:
- 24 gauge gold craft wire:...


List your electronic components at

Tags: transistors

About the Author


  1. Date: March 31, 2018 at 21:15
    Author: Burak Eker

    It's a great video. I look forward to your videos. every video is really nice.

  2. Date: April 1, 2018 at 00:00
    Author: Petr Kratina

    Really nice project, but git repo is empty, there is only MIT licence file :'(

  3. Date: April 1, 2018 at 03:33
    Author: Bruno Henrique

    Dude you're awesome! Thank you for every video content, It always impress me

  4. Date: April 1, 2018 at 09:13
    Author: prankster1893

    Du bist echt hammer, Respekt für so hochqualitative Videos! Die kleinschrittigen Erklärungen zum elektrischen Schaltplan waren super, genau das hatte mich interessiert. Ich hoffe du behältst die Motivation für solche aufwendigen Projekte aufrecht! Mach weiter so 🙂

  5. Date: April 2, 2018 at 00:08
    Author: David L.

    wow, so awesome video, you sir have cool super skills…. you won a subscriber, thanks.

  6. Date: April 4, 2018 at 01:55
    Author: Scott Lawrence

    Really like how you explained every part of this. Most skip over the technical parts of the pcb and wiring parts expecting everyone to be an expert already. Subbed ?

  7. Date: April 4, 2018 at 03:38
    Author: Gamingoodz

    I'm trying to get into electronics as an extra hobby. How did you know what transistor to use? did you just look at the current draw of the leds and the current needed to for the base and size it so it could output enough current from the collector to power the leds and then have a low enough current requirement for the base for the attiny to switch it?

  8. Date: April 10, 2018 at 22:10
    Author: Hoon Ki Kim

    This is very cool!!!! How do you like your new Delta 3D Printer?

  9. Date: April 28, 2018 at 10:19
    Author: kavs game

    wow dude, you could make a video on how to connect a wire to a battery and still make it as interesting as a spacecraft

  10. Date: May 15, 2018 at 09:31
    Author: Kerem Rekmete

    If i wanted to make it i would just print the whole thing in one piece and colour, carve a hole behind it and add an LED, paint it with the proper colours and i would get the same look.. would save a lot of time..

  11. Date: October 7, 2018 at 00:08
    Author: V4HE __

    Nice build! Just so you know, AWG stands for American Wire Gauge.

  12. Date: October 28, 2018 at 12:02
    Author: Quang D? Tr?n

    hello , i am Vietnamese , i want to know the first machine in demo video with title " let's get started " . thank you very much .

  13. Date: November 8, 2018 at 03:23
    Author: Ana's Workshop

    Hey, there! I'm using this model, along with two others, to build an arc reactor of my own for display. I'd like to make a video on it which won't be monetized now (because it'll be my first video) but might be in the future. I won't provide any stls and I'll mention in the video that the base model isn't mine. I'll also provide a link to your model in the description. I'd like to get your permission to do this. If not, I totally understand! Just let me know if you see this, please. We can also arrange something else privately if you'd rather have it any other way! That said, your model was really one of the most accurate models I've seen. Especially when it comes to the coil spacers. Loved it!

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