Hot Hacks, Mods & Circuitry Posts

How To: Make a digital color organ with high-powered LEDs

Collin of MAKE is back with another inspiring project. You may remember his analog light organ. Well, he's decided to upgrade and make his light organ a digital one. One thing to watch out for is the amount of heat emitted by high-powered LEDs, but as long as you find a way to dissipate the heat, this will work out just fine. Watch, and don't forget to read the thorough instructions before building this!

News: Touchscreen Made With Blocks of Ice

Far away in Finland, where the ice is plentiful and the temperature is bitter cold, the Finnish Nokia team have created the world's first touchscreen display made entirely of ice. Constructed with massive slabs of river ice, the display was first shaped into neat square slabs with a chainsaw, and then smoothed into a watchable surface with a powerful heat gun.

News: Touchpad Made with Paper and Pencil Scribbles

Who says nothing productive ever came out of doodling? Certainly not the hacker responsible for this fun (and at least somewhat functional) paper-and-pencil touchpad, which takes advantage of the natural conductivity of graphite: There isn’t much to explain here. It just uses pencil graphite on paper as a kind of two dimensional potentiometer. Four voltage dividers between 5v, 2M ohm resistors, the paper, and my grounded finger feeds signals from each corner into an Arduino. The Arduino does ...

News: Hacked Kinect Captures 3D Video in Real Time

That Kinect you bought for your Xbox 360? More than just a game controller, it's a bonafide hologram generator! In the clip below, UC Davis researcher Dr. Oliver Kreylos demos the process. The fun stuff begins at the :44 mark. Kreylos explains, "By combining the color and the depth image captured by the Microsoft Kinect, one can project the color image back out into space and create a 'holographic' representation of the persons or objects that were captured."

How To: Solder stainless steel

This video tutorial is in the Electronics category which will show you how to solder stainless steel. For this you will need silver bearing solder. Harris #8 StaBrite is good, but it is expensive. Plumber solder works fine, but make sure it has silver in it. Use Harris Stay Clean liquid flux. All the surfaces have to be clean and sanded. In this video a pipe is being soldered to a metal sheet. Apply some liquid flux to the outside of the pipe to be soldered. Make a neutral flame, heat the pip...

How To: Increase the range of a USB Bluetooth adapter with a high performance antenna

Watch this amazing USB Bluetooth adapter hack from Kipkay. It's easy and effective, plus it will work with other wireless devices, too. Bluetooth works on a 2.4GHz short wavelength radio frequency, but it's only effective over short distances. Well, Kipkay's going to show you how to increase the range by swapping out the antenna in the bluetooth adapter with a HyperGain 2.4GHz high performance antenna.

How To: Turn an LCD screen into a simple EL (electroluminescent) display

Electroluminescent (EL) materials light up when electricity passes through them, as opposed to more common incandescent lights that respond to heat. EL displays are becoming very popular in advertising and art,but getting them or the materials to make them can be expensive. Watch this video to learn how to turn an LCD into a simple EL display, and also how superglue can be used as a cheap dielectric in this sort of project.

How To: Watch Flash video on an Apple iPhone with the Skyfire web browser app

Now available for download in the official App Store, Skyfire is a mobile web browser that converts Flash video to iPhone-friendly HTML5 on the fly. Because Apple has heretofore not supported Flash video, that's kind of a big deal! In this iPhone owner's guide, we learn how to use and navigate the various features of functions of the Skyfire smart browser. For all of the details, and to get started watching Flash video clips on your own iPhone 4, 3G or 3GS, iPad, iPod Touch or other iOS devic...

How To: Wire a light with a 3 way switch

In this video, Mark Donovan teaches us how to wire a light with a 3 way switch. Before starting, make sure the power is turned off from the main circuit panel first, and you test to make sure it's off. You will have two switches for the same light fixture. For a 15 amp circuit, you can use 14-2 and 14-3 wire. These wires will have a black, white, and red wire. The 14-2 wire just has a lack and white wire with a copper ground. The power coming into the base should have all the wires that conne...

How To: Solder a 0603 LED

In this tutorial, we learn how to solder a 0603 LED. First you will get a business card or card with a piece of masking tap. Then, place our LED on the masking tape and apply posts to it. From here, you will apply some solder to the LED as well. Make sure you apply enough pressure to the LED so it will not pop up. Use just small touch of solder and put it on the top of the iron. Touch both sides of the contact and you will have enough solder on the LED. This will finished your soldering, just...

How To: Solder for cheap

In this tutorial, we learn how to solder for cheap. Start out by forming the wire to get it ready to solder. The trick here is to create some tension between the two ends, do this by going back and forth hitting the wires. Now, grab a torch and start to flex the wire while holding it in front of the open flame. After this, grab some of the flux you keep in a bottle and apply it to the piece. Continue to apply heat to the wire until it turns cherry red, then apply the solder with the connectio...

How To: Scratch-proof the top layer of an audio CD

If your audio discs aren't playing anymore or constantly skip, then your problem might be scratches. Not just the bottom layer matters on an audio CD. The top layer can scratch just as easily and cause just as many problems. That's why it should be protected, and this video shows you a great hack for protecting your music compact discs. You just need to add an extra thin cover to the top of your CD, which comes from a trashed CD or DVD, for which you need to boil to remove the thin plastic la...

How To: Build a Cheap Waterproof Flashlight for Diving Depths Past 80 Feet

The pressure underwater is undeniably strong. If you were to fill a balloon with water and take it underwater, it would not burst but would stay the same size because liquids are not compressed. The pressure is the same, inside and outside of the balloon. If you were to fill that same balloon with air instead, the lower it dives into water, the more it shrinks, until it eventually can't take the pressure anymore and bursts.

How To: Make a Beetlebot from your parts bin

This video tutorial is in the Electronics category which will show you how to make a Beetlebot from your parts bin. The Beetlebot project can be found in Make Volume 12. You will need a couple of small motors, 2 momentary switches, 2 AA battery holders, a piece of metal, a small bead, 2 paper clips, heat ring tubing and a couple of connectors. Cut off two pieces of the tubing and using a soldering iron melt them over the ends of the motors. Hot glue the 2 momentary switches at an angle with t...