This two part video goes over the procedure for testing and inspecting lead acid batteries. A machine is required to test the battery itself. You can do the visual test at home, and then bring it to an auto parts store for the machine test part. Part 1 of 2 - How to Test and i ...more
Make a Lead Battery
Walt Barr shows you all the steps to test and recondition automotive lead/acid batteries on one video.
See how to power an LED with a lemon battery.
When ringtones and vibration alerts miss the mark and fail to grab your attention, causing you to miss an important call or text, LED flash alerts are a great backup plan. While we already showed how to activate this on Samsung devices, the apps shown below make this feature e ...more
If you've been following the news lately, you've probably heard of the word "vitriol" being used as a political weapon, with people like celebrity left-winger Jane Fonda blaming conservatives like Sarah Palin for "vitriolic" attacks on Democrats and the "violence-provoking rhe ...more
You're lost. You're cold, thirsty— you're hungry. What if you're not much of a hunter? Maybe you're a gatherer. So, then you'll eat plants. But what if you eat something poisonous? What if you're allergic to it? Okay, so not many people will find themselves in a situati ...more
What happens when you need to build a fire, but you forgot your matches and lighter? What if you don't know the fire-plow method, the bow and drill method, or even the flint and steel method (not that you would have flint, because you forgot your lighter)? Watch this survival ...more
Save tons of money by building your own LED pen that works with a multitouch smart board / whiteboard. You'll also need a WiiMote (Wii Remote) to use in conjunction with your homemade LED pens that you'll be making in this video. To get started with this awesome project, you'l ...more
This is gruesome. Beware. Don't watch if you're easily grossed out. The rat has a battery access hatch made out of velcro on its back, not shown in the film. If you solder a battery, make sure you do it quick - if the battery is exposed to heat from the soldering gun for too l ...more
Learn how to make LED ice cubes with this tutorial! Steps: First take LEDs of any color and test it with a small battery. Then take a ice tray and a strip containing holes in which the LEDs can easily fixed. Now take Resin and Hardener solutions and stir them. Now place the LE ...more
It isn't a new gadget, but the EyeClops Mini Projector still makes a great stocking stuffer for Christmas Day. It's great for kids to play with, but for techies— it's sure to be something fun to hack and mod this holiday season. The EyeClops Mini Projector looks more like Wal ...more
Light up your world with these beautiful and easy-to-make illuminated LED balloons. You will need: 1 ten mm non-diffused LED balloon duct tape two CR2032 3v Lithium coin batteries optional: helium These LED balloons are awesome. Cool for parties.
In this Electronics video tutorial you will learn how to build and use a tinyCylon kit. The kit contains a battery pack, a PCB, LEDs, resistor, a momentary switch and a screw. The long end of the LEDs will go into the square shaped contacts. Don‚Äôt push the LEDs right up to t ...more
The first day of Hanukkah is here, the day you start lighting the candles of the menorah. So, why not ditch the wax and light the "lights" this year? (Skip ahead to see the LED menorah) Hanukkah is a Jewish festival that lasts eight days from the 25th day of Kislev, which th ...more
Materials needed: Altoid mint tin, 9 volt batter and connector, switch, 7812 voltage regulator, 12 volt computer fan, carbon filter and 2 pieces of screen. Wire the battery connectors. Solder all of the following: Negative connector to the switch, wire to the switch, ground wi ...more
These days, eReaders are everywhere. For die-hard book nerds, eReaders offer the convenience of a full library without having to sacrifice shelf space. Sure, there are the paper buffs who swear that you just can't take an eReader with you into the bathtub, but when's the last ...more
Simple yet effective, capacitors come in a dizzying array of forms and materials, vital to so many circuits for storage, timing, and filtration - the mighty capacitor! In this installment of the MAKE presents series, Collin Cunningham explains - how to build a Leyden jar, how ...more
Warning: this video does not demonstrate the actual instructions for making this spooky Halloween LED light up pumpkin that blasts a truck horn. Check out http://blog.makezine.com/archive/2008/10/howto_tuesday_scariest_pu.html for more information and a complete build process. ...more
An emergency battery charger for your mobile phone comes in handy, but it's not the ultimate solution; once it's dead it's useless (what a waste). If you want to really get off the metaphorical grid, you can follow the steps in this video to construct a more robust circuit tha ...more
This two-part video introduces you to the breadboard, also called a protoboard, used to build electronic circuits without soldering. The first part of this presentation describes the features of a breadboard. The second video continues by showing you how a breadboard is used ...more
What's an LED Throwie? Watch this video and find out how to light up your neighborhood using colorful LED's and magnets! Yet another great idea for creating neighborhood art from Graffiti Research Lab. LED Throwies are an inexpensive way to add color to any ferromagnetic surf ...more
Watch this science video tutorial from Nurd Rage on how to make a lithium thionyl chloride battery, which is capable of generating 2.8v with enough current to power a LED. Warning: Thionyl Chloride is EXTREMELY toxic and this experiment must be performed in a fumehood by an e ...more
Watch as Novastar and Gundamaniac demonstrate detailed wiring for a crystal focus board for Star Wars Lightsabers! Making your very own Jedi Light Saber may be a daunting task if you don't know what you're doing, but this four-part video tutorial will save the day from evil fo ...more
In order to make a retro wireless handset, you will need the following: vintage handset, a momentary switch, a resister, a Blue tooth headset, wires, a drill, and a blue LED and mount. Disassemble the blue tooth head set. Then, disassemble the handset. Remove all of the wires ...more
This detailed video series shows you everything you need to do to install an LED lighting gauge cluster in your Volkswagen MK4 (Jetta, Gulf, or GTI). Part 1 starts with disconnecting the battery, Part 2 has you remove the interior cluster, Part 3 you disassemble the instrument ...more
I am writing this quick post in response to the recent earthquakes and tsunamis that are affecting Japan. As soon as the news broke, and we began to hear of tsunami warning for our area, I immediately realized how under prepared I was for a natural disaster. The thing that dro ...more
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 reanimat ...more
It turns out that the popularity of soft circuit electronics has leaked out of the interwebs and into the hands of the U.S. military. Soft circuit electronics allow you to literally sew electronics circuits into fabric using flexible conductive thread instead of wire. Soft cir ...more
Graffiti is a great way of getting your message out to the masses. The earliest known graffiti dates back to 30,000 years ago and used the traditional apply-paint-to-wall technique. Though our paint now comes in cans and not from scavenged berries, the actual graffiti process ...more
Since the invention of the mechanical clock, enclosure of the commons, and proletarianization of labor, the alarm clock has been the bane of our existence. While not actually evil, it does represent the constant and uncompromising glare of our owners shaking a patronizing fing ...more
Richpin demonstrates how to test an alternator with a standard multimeter. First make sure that the vehicle's battery is fully charged. Take the negative lead of the multimeter and put it on the negative post of the battery. Place the positive lead of the meter on the positive ...more
The SSC P7 Flashlight is a tactical torch that's pretty bright at 900LM. But, it's totally possible to make it just a little brighter. The SSR-50 LED puts out about 1200LM. The MET Light, SSC P7 C can be modified with a new SSR-50 LED. Using the SSR50 LED, brightness will be ...more
Rockets are lots of fun when you are launching them. However, finding them can be an arduous if not maddening task. Fancy space rockets have lots of tracking equipment to make touchdowns as simple as pie. Today, we look at embedding LEDs into your hobby rocket for easy night f ...more
Computer viruses are terrifying. They are undetectable, dangerous, and operate constantly right under your nose. For the average computer user, there are only a few repair options. You could buy expensive antivirus software that causes more problems than it fixes, you can wipe ...more
To make a glowing ice bulb, like the one in this how-to video, you need LEDs, batteries, wire, a balloon, and electrical tape. First, you connect the led to the wires. Then, you put the LED in the balloon, fill the balloon with water and freeze it. Once frozen, remove the ball ...more
OK master spy, it's time to get your lurk on. If you're going to be spying, you'll need to be able to spy at night. This video will show you how-to make your very own night vision goggles so you can keep up with your mark well after the sun goes down. You'll need a 9V battery, ...more
What a unique bow. Your gifts will be beautiful under the Christmas tree. Materials you will need are: plastic wrap, hot glue, LEDs, scissors, pliers duct tape, glue gun and glue, toothpicks and 3 volt batteries. First you take the plastic wrap and cut it about 5 times the siz ...more
The agents of empire do not always arrive with warning. When you are besieged, surrounded, and infiltrated, imagination is often your best weapon against the oppressors. If all you have at hand is some duct tape and a disposable camera, fear not, you have the makings of a powe ...more
Bikes are a great form of transportation. They use human energy more efficiently than any other machine. You can keep it in your closet or hallway. You can even take it on the train in a pinch. However, this portability is also the bike's biggest draw back. If you own a bike i ...more
Around the world, X-People (yes... there are X-Women, too) are under attack from an intolerant sapiencentric ruling class. Integration without equality is a farce. Autonomy is denied outright. Human prejudice cannot abide a mutant state. Human fear, born to hate, imposes itsel ...more
Know how some people have a natural way of lighting up a room? Well, hacker i-am-jen has an artificial one—LED sneakers! Powered by a pair of 6-volt batteries and two teeny-tiny RBBB Arduino microcontrollers, the shoes offer a high-tech, DIY spin on the mass-market L.A. Lights ...more
In this clip, learn how to make super powerful 9 volt LED flashlights using things you most likely already have around the house. You will make these mini-lights out of things like batteries and scrap wires. So, dig around in your garage and see what you can find to get starte ...more
In this video we manage to power a clock with nothing but two potatoes. In order to make this you will need two potatoes, a triple A battery powered clock, bare wire, galvanized nails, and leads, which you can find at radio shack. The clock is powered by the potato battery.
If you have an older battery charger and it works apart from having worn out terminals or frayed wiring, don't throw it away. Overhaul it with new wires, a plug and clip leads. This costs about $15 at the most instead of the $50 for a new unit. So watch this automotive repair ...more
Want to put some electronics into your terrain piece or diorama? LED lights are great. You can use tiny watch batteries, which are small and efficient. LED lights are cheap, they come in colours, and you can find them in all kinds of broken gadgets. Watch this instructional vi ...more
A basic instruction for electronic enthusiasts. I use an RGB LED and a 510 ohm resistor as I may change from 6 to 9 volts later, but with my LEDs i could go as low as 330 ohms. I sacrifice some brightness for the sake of longer life. To choose your resistor, the value in ohms ...more
This video demonstrates a great way to take rust off of metal piece that are hard to clean by hand. You will need a plastic bucket, a wire hanger, and a battery charger. In the bucket mix one gallon of water and one tablespoon of washing soda. You can make washing soda in the ...more
Whenever we make a homemade circuit, we use what are called through-hole components. Any components with long metal leads is a through-hole component. They are great for soldering to, but it's tough to fit enough through-hole resistors and capacitors into a smartphone. To get ...more
Fans of Doctor Who know that the sonic screwdriver is the ultimate tool. It can unlock doors, turn on lights, detect life forms, solder wires, and sabotage weapons. Presumably, the sonic screwdriver creates sonic vibrations to achieve whatever the doctor wants by vibrating th ...more
This awesome how to explains the construction of a DIY USB-charged flashlight! The coolest part is that there are no batteries! Two super capacitors hold the charge from the USB and release it to the LED light at the touch of a button! Image from La famille créative
Kipkay shows you how to make a magic lightbulb like the magicians use. Great practical joke or prank. All you need is a couple of lightbulbs, an LED and some batteries.
Here is a great project that teaches you how to make a wireless sensor bar for the Wii with just 2 LED lights and 2 batteries.
Making your own circuit boards can be a daunting challenge. You have to design a schematic, test it on a breadboard, design the board layout, and then after all of that, you still have to print and etch a board! Luckily, we have Fritzing. Fritzing is a free open-source PCB d ...more
Though Sony has yet to officially announce the release of their rumored PlayStation cell phone, images of the device were leaked this morning on Chinese website IT68. Possibly called the Sony Ericsson Xperia, the mystery phone features slide-out PlayStation controls, 4-inch t ...more
In this video, learn how to make a Pandora battery with the original PSP slim battery. To complete this tutorial, you will need your PSP, scissors, electrical tape, an Exacto knife, and a lead pencil with an eraser. Note: In order to know which line to cut, the videomaker has ...more
Allows a WYSIWIG approach to shooting with strobe LED lights, interesting concept, I guess the advantage is battery life vs using the light continuous.
See how to do electrolysis of water with graphite (lead from a pencil). The positive side has oxygen bubble, and the negative side has hydrogen bubble. Just get a 9V dry cell battery.
This demonstrates how to wire a 555 timer chip for Pulse Width Modulation. Items used: solderless breadboard, 555 chip, 510 ohm resistor, 100k ohm variable resistor, 1 RGB LED at 20-25ma, wires, and 9v battery. And those vertical lines are what i mean in terms of what you can ...more
Hack a car photo to be a really awesome decorative object for your home or office at a very low cost. It's also really fun to make! All it takes is a few LED lights and a 9V battery.
Instructables member mark-mark creates a beautiful effect with just a tin can lantern and an LED. It's as simple as it sounds: punch a decorative pattern into a tin can and insert your LED rig. Catch the impressive result here. You Will Need: Quart sized tin can with lid Pr ...more