Tag Archives: Super Soaker

Defend your personal space with this wearable device

Maker builds an over-sized, electro-mechanical backpack with a shoulder-mounted, self-firing Super Soaker. 

Don’t you hate when people invade your personal space and get up in your business? What better way to send a message than by squirting them with a water gun? However, having to manually target people with your soaker of choice can be a tedious task, especially if there is an entire army of time-wasting, close-talking friends or colleagues approaching you. Luckily, there’s an automated solution that will do the trick. Introducing the Personal Space Defense System (PSDS)


The brainchild of DJ from Instructables, the system is described as an “over-sized, electro-mechanical backpack with a shoulder-mounted, self-firing water gun.” While this isn’t the first robotic buffer zone defender, it’s perhaps one of the coolest — and most applicable nevertheless. (Anouk Wipprecht’s Spider Dress is still pretty sweet, too!)

How it works is pretty straightforward: If someone encroaches upon your personal space, an embedded sensor pendant will detect the invader and the Super Soaker Electro Storm will blast a few shots of water towards them.


Aside from the stripped-down water gun, the Maker employed several electronic components to make the project a reality. These included an Arduino Micro (ATmega32U4), an IR distance sensor, a PIR motion sensor, a laser diode, a power switch, an illuminated switch, a 2200mAh 7.4V LiPo battery, a voltage regulator, a MOSFET, a bunch of resistors, a transistor and a capacitor, as well as a number of other off-the-shelf supplies.

The PSDS is comprised of three main parts: a shoulder-mounted water gun, a sensor-laden necklace and a trigger mechanism. As AJ explains, pressing the power button activates system while pushing the trigger button will toggle between armed and disarmed modes. Once the system is armed, the gun will flip up and the attached laser diode will power on.


What’s more, he removed the original case of the Super Soaker to reduce the weight and allow for easy direct electrical control. This enabled him to wedge the water gun and reservoir into a channel bracket and actuate it by a geared servo.

“For ease of mounting and added comfort, I designed the system to be mounted to a regular backpack. The pack provides a sturdy mounting point for the main tube and proto-board for the electronics,” AJ adds. “The gun assembly is a bit hefty, so to balance out its inherently wobbly nature, I created a counterweight that has a mount for a camera. I ended up attaching a GoPro.” (This will surely capture some hilarious clips!)

The program running the PSDS is a basic Arduino sketch, which the Maker has made available, along with the Bounce library that will need to be installed. Those wishing to build a personal space defending wearable of their own can head over to AJ’s Instructables page, where you’ll find a detailed breakdown of the project.

Creating a water-squirting, Twitter-enabled Super Soaker

What’s better than a motorized Super Soaker? A motorized Super Soaker that can blast water when it detects motion. 

As fun as water balloon fights may be, when it comes to summertime fun, nothing beats a good ol’ Super Soaker battle with friends. That is unless, of course, you decide to up your outdoor H2O warfare arsenal with some motion sensing water guns.


Instructables user “aderhgawen” has developed a water spraying intruder alarm based on a LightBlue Bean (ATmega328P) along with a PIR motion sensor. Not only does the modded Super Soaker Thunderstorm automatically squirt water when it detects movement, it also triggers a nearby computer to snap a photo of the victim and tweets it. This is accomplished through the combination of Node-RED and Python to link the MCU to Twitter.


In order to pull off this project, the Maker tore down the original Soaker’s casing and cut one of the battery wires. He then lengthened the exposed ends and ran them out of the gun to his control circuit. Beyond that, he connected a protection diode to help prevent any reverse EMF from damaging his more sensitive electronics. Since this gadget has a motorized pump, he used a MOSFET on a breadboard to drive its motor, allowing it to be controlled by the Bean.


The system itself runs on a computer and monitors the Bean’s serial output. If motion is detected, it triggers a Python script and captures a photo via the webcam. A second script will upload that photo to a Twitter account. The Node-RED server can also monitor the Twitter account for incoming direct messages. If it receives a message with a verified password, it can use the rest of the message as one of four commands to enable or disable the Super Soaker.

Are you looking to take your water gun fight to the next level? Check out the Maker’s entire project on Instructables here.