Student Soaker, wireless water gun

As far as pranks go, [Austin Shaf's] wireless hidden water gun is a real treat. The video above goes over a brief explanation and shows the setup in action. The prankster holds onto a wireless AVR remote, and when the unsuspecting victim walks by, he activates a second AVR controlling a pump; spraying water everywhere.

While most of us are out of school by now, the project would still be a fun office or perhaps street prank. If you’re one for registering, schematics and source code can be found at AVRFreaks. Alternatively, check after the jump for a copy of both.

Related: Office Pranks, and Water Guns.

(Click for big, or right click save as.)

Here for TX.zip

Here for RX.zip

25 thoughts on “Student Soaker, wireless water gun

  1. I’m just imagining walking around with a hand-held baton with a glowing button on one end and a key on the other in an over-paranoid post 9-11 public school…

  2. At first I was angry at this kid using his knowledge for petty pranks, but 1minute 24 seconds into it I forgave him.

  3. And now they work again, this is a really odd problem that seems to occur only here.

    If I try to visit the direct link of the image that does not work in the beginning unless I try to access the paths directly and then refresh.

  4. did this a long time ago with an old card alarm a video tripod and a airsoft machine gun

    use the car alarm with a motion sensor ( armed with the keyfob) use the siren output to a relay to trigger a doorlock actuator ( the aftermarket ones) that was clamped to the trigger of the airsoft — armed up the alarm st the tripod up near the door or hallway set the outer and inner motion trigger and blast away an the thieves that came near my stuff!!! of course it was not amed at the suspects face – only the lower half of the body

  5. Well done — I have roommates this would work great on.

    …so those were college students? They look awful young these days!

    I guess I keep getting older and they stay the same age…

  6. What should you build next? You made a gadget that soaks hot co-eds’ t-shirts. You should retire on a high note.

  7. You should call the low, medium and high settings “After a long run”, “Just got up” and “Six Beers”.

  8. Should be about time for David Letterman to start plating with his remote “water gun”, if he hadn’t already.

  9. ok, options for next thing to build. Giant remote controlled elephant with a pigs head, eye patch and buck teeth. oh, it also shoots water balloons from a trap door in its back and poops out old sticks of ram. Second Idea, water balloon mini gun? 3rd- spanish speaking hamster on tricycle that drives around asking for directions in spanish? 4th- build a min Tesla coil into a door handle. Need any more? let me know!

  10. Don’t you think the ATMEGA8 is a little bit of an overkill?

    By the way.. What’s a NPN MOSFET? I only know NPN BJTs and N-channel MOSFETs. Is this like a crossbred of these two? :O

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