How To: Fix bObi's Left or Right Wheel
With just a Phillips head screwdriver and this walk-through, you can open and close any bObi robot vacuum. So long as you have a replacement wheel, follow these steps to install it yourself.
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How To: Fix bObi's Floor Detecting Sensors
bObi has four floor detection sensors on her underside that warn her not to drive over ledges and stop her from falling down stairs.
How To: Install a trunk override light switch in a Saturn car
In this video, Richpin demonstrates how to install a trunk override light switch in a Saturn car. When you open the trunk in a Saturn, the light turns on and there's no way to turn it off. Thus you must have a switch in the circuit so you can turn the trunk light off. Select an out of the way place to mount the switch so it doesn't interfere with your cargo. Find the blue connector. The red wire with the black stripe is the ground wire from the latch switch. First, disconnect the battery. The...
How To: Make an LED or a light emitting diode
Take a tour through the world of the light-emitting diode. Learn - who invented it, how to use it, and how to make your own.
How To: Drain and clean a hot tub spa
This eleven-part video tutorial discusses how to drain and clean a hot tub spa. It goes over the process step-by-step from turning off the circuit breaker to restarting the spa. It also gives helpful tips on cleaning the tub, working with spa chemicals and avoiding air locks that will make the process a lot more smooth sailing even for a novice spa cleaner.
How To: Workout running muscles with long stride runs
Learn how to do long stride runs across a floor. Presented by Real Jock Gay Fitness Health & Life. Benefits
How To: Automate Your Doorbell with Freaking Lasers
Doorbells are a great idea. They let you know when someone who's not a burglar is trying to enter your house, apartment, or squat. They eliminate the need for lots of noisy yelling and startling door pounding.
How To: Solder for electronics and other repairs
Learn how to solder. Whether you like to tinker with electronics or do your own plumbing repairs, soldering metal is an essential skill. Plus, it's kinda fun.
How To: Replace an electrical outlet
If your old outlet has become so loose that a cord barely stays in place, it's time to change it. It's not just an annoyance—it's a hazard. Learn how to replace an electrical outlet with this instructional video from Howcast.
How To: Make a stepper driver power supply for a CNC router
A CNC router machine is probably the most useful tool a hobbyist can own, but the price for a CNC machine on the market is way more than the average hobbyist is willing to spend. You can build your own CNC with very basic tools, little knowledge of machinery, mechanics, or electronics, but be warned, these machines are inherently dangerous, so wear the proper protection and use common sense. At the very least, read the instructions and precautions on every tool you use.
How To: Illuminate Dark Drawers Automatically Whenever You Open Them Using LED Strips
At night, it can be pretty difficult to see what's inside drawers and cabinets, unless you have night vision or something.
How To: How Your Smartphone Can Get You Fit in Just 7 Minutes a Day
We all want to be healthy, but in practice, it can be tricky, especially from the fitness angle. Our lives seem busier and busier, which makes hitting the gym quite the challenge. What if we told you there was a real way to work on your fitness in the comfort of your own home — in just seven minutes a day? All you need is a chair, a wall, and a 7-minute workout app.
How To: Replace bObsweep's Bumper
The bumper for bObsweep Pethair and Standard are installed the same way. It holds the sensors that allow Bob to see any obstacles in his path. If a repair of the wall detection sensors is needed, the steps for replacing the whole bumper are the same when working on either bObsweep model.
News: How to Choose a FPGA That Suits Your Project
A FGPA is chip that is programmable with the computer to create circuit. It is a totally different type of programmable board compared to an Arduino for example. The Arduino will follow lines of codes to generate the necessary outputs. A FPGA won't however read lines of code, but it is a circuit itself. When the chip is programmed, a series of AND-ports, OR-ports and many others ports are linked together. The FGPA will increase the speed and the possibilities of your designs! I assume that by...
How To: This DIY Baby Monitor Uses Lasers and a Wiimote to Detect Your Child's Breathing
Proud new papa Gjoci wanted to make sure he never had to worry about whether or not his baby girl was breathing, so he built this amazing breath-detecting baby monitor using a Wii remote, a printed circuit, and a laser. First, he opened up the Wiimote and took out the camera, then used an Atmel Atmega88 microcontroller to make a printed circuit. Low-power infrared lasers shine on the baby's clothing and the Wii camera detects the motion of the baby's breath, activating an alarm if the motion ...
How To: Make a "Joule Thief" and Create Zombie Batteries for More Power After Death
Just about every household gadget we own runs on 1.5 volt batteries of one size or another. Wouldn't it be great if you could reuse all of those dead AA, AAA, and D batteries after they've passed on? It turns out you can make a simple circuit called a "Joule Thief" to reanimate the undead flesh of your deceased batteries and create a zombie battery.
How To: Make a potato powered calculator at home
Need an electric outlet and don't have one? No batteries on hand, either? Well, then you should use the next best thing - potatoes! In this tutorial, learn how to make that old science fair staple - the potato powered calculator! Check it out, it really works!
How To: Safely Launch Fireworks Over Wi-Fi with an ESP8266 Board & Arduino
Fireworks are the best part about the Fourth of July and other celebrations, but they can easily cause accidental injuries. It's both safer and more fun to set them off remotely, so we'll hack some standard fireworks with nichrome wire, a relay, and an Arduino to ignite remotely over Wi-Fi using any smartphone or computer.
Backwards Geocaching: How to Make a Reverse Geocache Box
If you've never heard of geocaching, it's kind of a grown-up treasure hunt you play everywhere in the world. GPS coordinates are given as clues and the players must find the cache box. There is usually a log book to write your name and a small toy or present to collect.
How To: Charge a Cell Phone on Train Tracks
If you're ever lost or hurt out in the middle of nowhere with a dead cell phone, you might be able to "flag" down help as long as you're near some railroad tracks.
How To: Hack together the DIY video chat robot
Sparky is a wireless, web-based video-chat robot from the Gomi Style crew. You can learn how to make your own Autonomous Telepresence robot using spare computer parts, some old toys and a bit of custom software (that we provide at gomistyle.com). This robot is operated with a Make controller circuit board. Sparky is a retired electric wheel chair with a monitor as a head.
How To: This Easy DIY Money Indicator Light Makes Sure You Always Have Cash in Your Wallet
Obviously, millionaires like me don't really have to worry about an empty wallet, but for the rest of you out there, having no cash when it comes time to paying a bill can be excruciatingly embarrassing.
How To: Remove and Replace a Broken Alfa AP121U (Pineapple) Aerial
For those of you who are as unlucky as me with your Pineapple and need to re-seat or replace the aerial connector this will show you how.
How To: This Clever DIY Contraption Lets You Capture Exploding Balloons Without a High-Speed Trigger
There are some pretty incredible camera techniques out there, but the biggest problem that amateur photographers run into is that they don't have the equipment to try them. You can still get some great shots, but there are some things that are really hard to do if you don't have the money to drop on expensive lenses and accessories.
How To: Hide an Inductive Charging Station Inside Your Furniture
Inductive charging has been around since the days of Nikola Tesla, but it has yet to be integrated into a lot of popular devices. This is partially because it's slower and more expensive than methods that involve direct contact.
How To: Turn an Innocent Dry Erase Marker into a Hotel Hacking Machine
A couple of months ago at the Black Hat security conference, hacker Cody Brocious gave the hotel industry a nasty surprise when he figured out how to hack the locks made by Onity that are used in millions of hotels worldwide.
From Studebaker to Nanobaker: How to Add a Touch-Controlled, iPod Nano Sound System to Your Car
How do you make a 1950 Studebaker even cooler? By installing an iPod Nano in the dashboard, of course! The folks over at MAYA Design hacked their way to a touch-controlled sound system with this project they've dubbed the "Nano-Baker" (or "Stude-iPod") using a pair of Apple ear buds, a USB cable, a voltage regulator and a set of speakers. Here's how they pulled it off.
Robot Basics: Using an H Bridge to Move Your Bot Backwards
I love robots. They have the potential to evolve into Asimovian destroyers of the human species, but have only just mastered the art of cleaning my rug. They have an ever increasing cool factor and a growing number of cheap and simple components that let the hobby roboticist reach for the burning miasmas of plasma. But to get to the stars, we need to start with the basics.
Hands-On: Hands-On with Lenovo's ThinkReality A6, a Disappointing Step Back from Augmented Reality's Cutting Edge
In the technology space, there are certain brands you grow to depend on. Whether it's due to a long, multi-decade track record of success, or new innovations that blow you away, some tech names accrue a rare kind of brand equity with users that's difficult to earn.
News: Uber Ordered to Give Potentially Incriminating Documents to Waymo
When will the drama end? The lawsuit between Waymo and Uber is back in the news with no signs of stopping. Today the court denied yet another request from Uber to shield itself with the fifth amendemnent, securing a small victory for Waymo.
5$ Voice Modulator / Changer : Batman Arrow
Its a voice modulator which can be used to change your voice instantaneously so you can disguise and pull pranks etc.
How To: Fix bObi's Main Brush Motor
One of the quickest repairs for bObi is replacing the main brush motor. To do this, you'll need a Phillips head screwdriver and a replacement main brush motor.
How To: DIY Pedal-Powered Phone Charger for Your Bike
Being healthy and active will help you live longer, but finding the strength to work out? That's hard. What does it do for me right now? I mean, here I sit, writing this article, thinking about going for a run, and I feel good just for thinking about running. But will I do it? Nah, I'm too lazy.
How To: Make a Dandelion Lamp Using LEDs, Optical Fibers, and Straws
Albert Einstein once said, "We know less than one thousandth of one percent of what nature has to reveal to us."
How To: Make a Lethal Traveling Arc of Electricity with a MOT-Powered Jacob's Ladder
With the microwave oven transformer (M.O.T.) salvaged in a previous project, a simple electrical circuit can be rigged to get high voltage arcs to fly outward and upward along a "V" shaped spark gap.
How To: Make LEDs Dance to Techno Music
You must have seen some expensive mp3 players and CD players which have LEDs fixed on them and they dance to the tune looking really pretty.
News: 5 Electrifying DIY Valentine's Day Projects to Score the Nerd Next Door
Valentine's Day is almost here, and if you're like me, you're scurrying to do something special for your mate. The standard chocolates and flowers just isn't cutting it anymore, and you can only make so many homemade cards before it becomes banal and meaningless. So, what can you do that shows you put some work into it, while not breaking the bank?
How To: Style your hair like Pixie Lott for summer music fests
The weather is getting warmer and that can only mean one thing - festival season is upon us! In this tutorial, learn how to style your long hair in a cute, stylish way that is also totally practical for the music fest circuit.
How To: Turn a used TV into an oscilloscope
Leeann of Hierchiss explains how to turn a TV into an oscilloscope. Turn the TV on and make sure it works. First, unplug the power. Take the back off the television. Cut the four picture wires that attach to the circuit board. Strip the ends of the wires. Tape the remaining wires off to prevent short circuiting. Clamp the red and yellow wires and attach to a 1/4 inch jack which feeds into a tape player. Repeat the same process for the green and blue wires. Plug in the TV to make sure the conn...
How To: Rig a drop shot fishing lure with Alton Jones
Most fisherman know what a Texas rig is—a hooked tied to the end of a fishing line with a slip bullet weight right above it. But for some of you pros, that's not good enough. 10-time Bassmaster Classic qualifier Alton Jones shows you a different, better rig—the drop shot. It's one of the hottest rig techniques on the pro fishing circuit. Instead of having the weight above the hook, you'll place the weight at the end of the leader line, right below the hook. Confused? Watch the video to see th...