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News: This LEGO Mindstorms Submersible Can Be Piloted by Your Xbox Controller

Making little robots with a LEGO Mindstorms NXT set is already cool, but putting one underwater? Now that's just crazy. That didn't stop this engineer, who built a LEGO submarine that can not only maneuver around his fish tank, but can also be remotely controlled with his Xbox controller. The craft has a sealed battery compartment, exposed Power Functions motors, and features real-time communication between it and a laptop using a NXTbee wireless module.

How To: This DIY Pneumatic "Mauler" Fires 300 Ping Pong Balls Per Minute

Here's an awesome weekend project that could leave you with a fearsome "Ping Pong Ball Mauler" capable of firing hundreds of balls a minute at your unsuspecting neighbors. Christian Reed built it out of a poly drum and a homemade pneumatic device. He turned a standard shop vacuum into a high volume, low pressure system that allows his contraption to continually fire a constant stream of ping pong balls at a rate of hundreds of balls a minute. Best of all, all of the parts he used can be bough...

News: Fully Functional DIY Pump Action Shotgun Made Out of Paper

This is no paper gun like you've ever seen before. Seriously. Tacome1942's homemade paper shotgun is a life-sized, fully functional Remington 870 replica. It would be hard to tell it apart from the real deal, not to mention it practically sounds like an authentic shotgun, too. The shotgun is made of approximately 97% paper, the remaining 3% consisting of pins, wires, and springs. Check out all the videos below to see the finer details, including the trigger group, shell stop, and disassembly ...

How To: Calculate your carbon footprint

Watch this video tutorial to learn how to calculate your carbon footprint. A carbon footprint is an equation that estimates just how much you, personally, are contributing to global warming—and all you have to do is plug some info into an online calculator. Figuring out how to make your footprint smaller, of course, is another matter.

How To: Build an Emergency Rucksack with a Poncho & Rope (The Horseshoe Pack)

There’s a good chance that you’ll be alone in life one day, and no... I’m not talking about a couch-bound, dateless loser with a pocket pussy and a bag of potato chips. I’m talking about alone. In the wilderness. Hungry. Cold. Lost. You can’t stay in one place too long, so it would be nice to have something to carry your belongings in. Maybe it’s post-apocalyptic land where you’re the sole survivor, and all the backpacks and rucksacks in the world are but mere ash. Either way, knowing this si...

How To: Remedy potential earthquake hazards in the workplace

Washington State has a history of large earthquakes, as does California. More than 1,000 earthquakes are registered in Washington State each year. More than 10,000 are recorded in California each year. In an earthquake, non-structural elements, which is anything that does not actually hold the building up, may become unhooked, dislodged, thrown about, and tipped over. this can cause extensive damage, interruption of operation, injury and even death.

How To: Play co-op story mode in SCC (St. Petersburg, Banya)

The new Splinter Cell video game has a co-op mode now, which means you don't need to play online anymore just to play against a human. You can have your best friend sitting right next to you… playing on the same Xbox 360. Forget the absurdity of playing in separate rooms, play in the same room. Splinter Cell: Conviction for the Xbox 360 is the way to go.

How To: Do a criss cross stitch on a knitting board

The instructor from the Knitting Board shows you how to make a criss cross stitch. This stitch has two weave patterns that you alternate to create a pretty textured look. Using a knitting board, the first stitch starts on the first pin of the back board down to the fourth pin. Then you weave back and forth across the board skipping a pin. At the end, take the yarn straight across the board and turn the board around. Return by picking up the pins that you skipped. Each pin will have two loops ...

How To: Create and animate a stop motion LEGO brickfilm

Create and animate a stop motion LEGO brickfilm! Yes, that's right... you can make your very own animated brickfilm, but wait... what exactly is a brickfilm? Brickfilms are animated films using LEGO, Mega Bloks, or other plastic construction building block toys. Most are stop motion, but some brickfilms are even made with CGI, traditional animation and live action.

How To: Make a level one boffer sword for LARPing

If you're a LARP maniac, or just a fan of LSD-themed (Latter-day Saint) games and activities, then this tutorial is perfect for you. Watch this video to learn how to make a foam-padded sword that is easy and inexpensive. This level one boffer sword will take care of your LARPing opponents in no time. If you're a fan of live action role-playing, then this boffer sword is just the beginning. The first video shows you step-by-step how to make this foam sword for awesome LARPing. The second is ju...

How To: Assign Each App on Your iPhone a Background Sound to Set the Mood

You can play background sounds on your iPhone to help you focus, stay calm, or fall asleep, giving you a personal sound machine wherever you go. Even better, there's a way to set each of your apps to play one of Apple's six ambient soundscapes automatically. When you open the app, its assigned sound plays, then it stops when you exit or switch to another app.

How To: Run a Reverse Image Search Quickly Using Any Photo on Your iPhone

Google Images, TinEye, and other reverse image search engines can help you find where images appear on the internet. You can discover what TV show or movie an image comes from, who took a photo, and if the profile picture of someone you're talking to online is really them, among many other uses. And there's a shortcut for iOS that makes running a reverse image search easy.

News: The Second iOS 13.2 Public Beta Is Out, Includes New Emoji, In-App Camera Settings & More

We public testers are in luck. Today, Apple released the second developer beta for iOS 13.2. As is the case with most beta releases, developers get theirs first, while public testers are left waiting. Will we get our update the same day, or will we need to wait? As it turns out, Apple decided to throw us a bone. The second public beta for iOS 13.2 is officially here.

How To: Download Any TikTok Video on Your Phone — Even if They're Blocked from Saving

Many apps, including Facebook, Twitter, and Facebook, do not let you download videos, even if they are living on your own account. Saving these videos usually requires a third-party app or screen recorder, which is inconvenient and can result in loss of quality. However, TikTok, the newish popular short-form video platform, makes it easy to download videos — even if they're not yours.

Dev Report: Machine Learning Agents Come to Unity

As we have seen previously with the likes of SethBling's Mar I/O videos and other examples, video games seem to be a great source for training AI neural networks. Augmented reality and machine learning are part of a collection of technologies that seem to be growing toward a point of maturity, and that will likely cause them to be intertwined for the foreseeable future. As developers, machine learning will definitely change the way we create software in the coming future. Instead of going lin...

How To: Turn Your iPhone's Speakerphone On Automatically for FaceTime Audio Calls

By default, when you receive a FaceTime video call on your iPhone, the speakerphone kicks in immediately after answering unless you're wearing headphones. It's the exact opposite when it comes to FaceTime audio calls, but it's pretty easy to remedy if you'd rather have the speakerphone kick in instead of the built-in ear speaker.