You Can Now 3D Print a Working Portal Turret (and It’s Awesome)

A completely articulated Portal Turret is delivered to life by an Arduino and a raft of sensors in addition to servo motors assembled in a 3D printed shell.

Valve’s 2007 puzzle platformer Portal and its 2011 sequel could also be properly over a decade outdated, however makers and embedded techniques fanatics proceed to recreate the quirky murderous robots from the franchise to at the present time. And Dutch online game developer Joran de Raaff’s model of the Portal Turret could also be the perfect one but. What’s extra, you may even make this at dwelling because of its painstakingly complete documentation.

Secret Sauce: Intelligent Gearbox for Convincing Kinematics

Joran de Raaff’s take on the Aperture Science Sentry Turret could not hearth dwell ammunition, nevertheless it however incorporates the sport’s trademark IKEA-esque minimalist design and the deceptively cutesy voiceover designed to lure unsuspecting check topics into its line of fireside.

The mission makes use of off-the-shelf elements, such because the Arduino WeMos D1 Mini 3 Wi-Fi improvement board (some extra ESP32 gaming initiatives) together with an ADXL 345 accelerometer and a PIR movement sensor, which permits the turret to go on a simulated murderous rampage upon detecting motion.

The Sentry Turret mimics gunfire by utilizing a intelligent association of servos, LED lights, and an onboard MP3 add-on board to recreate the recoil, muzzle flash, and witty one-liners. Nonetheless, the sheer compactness and high quality of the kinematics sells the phantasm higher than extra difficult makes an attempt previously, akin to Ytec 3D’s stab at the Portal Turret.

The key to this turret’s top-notch kinematics comes not solely from the painstaking programming effort, but in addition the good gearbox design that significantly will increase the cheap SG90 servos’ torque in addition to motion velocity. The result’s considerably much less wobbly and agile motion of the turret wings, with out having to spend massive bucks on highly effective servos.


How Difficult Is This DIY Sentry Turret Mission?

Portray and 3D printing the turret’s shell and movement system elements are probably the most tough elements of this DIY endeavor, whereas the code and schematics required to make the electronics work are a comparatively easy affair. All because of the wonderful documentation. The mission additionally contains the supply code. This could enable different makers to include probably fascinating new options.


De Raaff appears to have a superb grasp over the 3D printing course of, as evidenced by how properly the STL information have been optimized and oriented for FDM 3D printing—a luxurious that’s exceedingly uncommon in such initiatives. The information come pre-arranged for the standard mattress measurement frequent on most low-cost 3D printers, such because the Prusa Mini and Creality Ender-3. In case you personal the latter, you would possibly need to try our our Ender-3 improve information.

We suggest sticking to this structure and following the official project instructions.

An Interactive Memento of Valve’s Glory Days

For a company that dominates the gaming panorama, Valve solely made valuable few video games earlier than determining that actual cash lies in online game distribution as an alternative. Nonetheless, the video games it did make left an enduring impression and have been consolidated as popular culture icons.

Nothing underscores this higher than the truth that Portal followers proceed to spend numerous hours recreating the in-game automatons in actual life. In case you’re a fan of Cave Johnson’s work, you would possibly need to give this one a go.


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