Nerf Sentry Gun for the Apocalypse

nerf-sentry

If you’ve ever wanted to shoot someone with a Nerf gun, but just didn’t have the energy to get off the couch, this hack may be for you. It’s also a good way to ward off zombies if another apocalypse, Mayan or otherwise, is on the horizon.

Although the effects are very cool, as seen in the video after the break, the method for making this setup was quite simple. The requirements for this project were that the gun could not be permanently modified, and everything had to fire automatically. These restrictions may have contributed to the simplicity of the design as many of us would start breaking things before we had to.

Instead of some elaborate hack, the trigger was tied back in the firing position at all times. A relay was then used to interrupt the power supply to the mechanism allowing an Arduino equipped with an infrared sensor to automatically control the firing. The setup is explained after the break, but skip to around 1:55 if you’d rather just see the guns in action.

Comments

  1. Hack Man says:

    2 rounds per minute…..

  2. Mindcore says:

    Yeah. Somehow, I’d rather have 200 per minute :P

    (Especially if zombies are involved. Or Mayan gods.)

  3. Tech B. says:

    Couldn’t we skip the Arduino? I mean the PIR sensor can trigger a transistor to turn the relay on. Rate of fire could be done with a 555? I can see the arduino being there if it was rigged to some servos or something.

    Nice build/idea though. I been wanting to build my own Nerf gun lately with maybe some C02 or something.

    • Hack Man says:

      Arduino makes it easier.

      • joeisi says:

        I beg to differ. A 555 is much more straight forward. Less components, way cheaper as well as smaller. Why over complicate a design?

        • Nick Short says:

          I suppose it depends on whether or not you’re proficient at coding an Arduino.

          There are no calculations to be had using an Arduino and figuring out which resistors to use with a 555 can be annoying. I’d much rather use an Arduino and have the ability to add functionality at a later time.

          • If you’re proficient at doing the necessary math in C to bang this out, you’re more than capable of learning LC circuits and how a 555 works.

            Processor overkill/i-have-a-hammer-and-now-I-only-see-nails is a huge problem for the current Arduino community in my opinion, and one big reason why I distance myself from the community at large, despite being in charge of projects that would be in-scope. Everybody just wants to throw an Atmel at everything.

          • Eirinn says:

            If you’re used to the Arduino it’s way easier to just use one – much less hassle – I agree.

          • Ken says:

            You could use a ARM powered Arduino for real overkill!

    • fartface says:

      Why even a transistor? Alarm motion sensor 12V power and a relay. I am all done.

  4. freelancer says:

    Will not work for zombies.. Remember, they’re already cold, so no PIR trigger ;)

  5. Wow!!!have done a good job.

  6. john says:

    This would be useless against zombies….

  7. joeisi says:

    While a interesting build, I find that these torrents would only be able to stop dumb zombies. Oh wait, that’s our target here. Ok carry on…

  8. Nick says:

    Its a neat concept, but shoots wayyy to slow, and doesn’t move, its just stationary….

  9. jimbob says:

    isn’t a “sentry gun” by definition one that tracks targets ???

  10. Ali Nabulsi says:

    Wait a sec! Zombies are roaming cold blooded cadavers while the motion sensor you are using is a PIR sensor which is triggered by warm-bodied objects. So zombies can walk in and out and the PIR sensor won’t complain. Sorry body. You are zombie snack.

  11. Jerry Tremble says:

    Fun idea but be aware that in some jurisdictions it is illegal to “booby-trap” your home. Check your local regulations before attempting a project like this!

  12. chmodlabs says:

    Where did those transparent cases for the Nerf launchers come from?

  13. Dethpiss says:

    Why even bother? Just take a hammer and fuck shit up! Electricity controlling functions in a circuit! Pah! High Tech Sorcery! Burn the Heretics!!!

  14. Mike says:

    I like the sentries on http://www.realsentrygun.com/ better

  15. kj6epl says:

    A buzzer? Why not an mp3 shield with portal turret sounds?

  16. wanzibar says:

    needs auto targeting and higher rate of fire

  17. Now for more fire power with a rail-gun propulsion system…

  18. Office Nerf says:

    Aww i want them guns.

    I have just started getting in to nerf guns and i have converted the whole office to use them as well. It will go quiet for a few mins then the shooting begins lol.

    Im currently working on some modifications for the Maverick and will soon be working on the Strongarm :)

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Follow

Get every new post delivered to your Inbox.

Join 96,699 other followers