Infrared Technology Search Results

How To: Build a Cheap Arduino Tachometer to Measure the RPMs of Spinning Fans (And More)

A tachometer, or RPM counter, is a device that measures the speed of something that's rotating. In a car with a manual transmission, the tachometer can be helpful in determining when to release the clutch and how much gas to give when you're taking off. This DIY Arduino Tachometer by Chris on PyroElectro uses an infrared transmitter and receiver break-beam pair to measure the RPM of a computer fan. When the fan blade passes between the transmitter and receiver, the IR beam counts the interrup...

How To: Discover the Hidden Colors in Everyday Objects with This DIY Video Spectrometer

A spectrometer is a device that splits light into all of the different colors it's composed of that can't be seen with the naked eye. It does this by using a prism to refract or bend the light. Jeffrey Warren over at Public Labs created a tutorial showing how you can make your own video spectrometer and create spectra like the one pictured below. Any guesses as to what the subject is? Believe it or not, that's what whipped cream looks like when viewed through a spectrometer. You can do this w...

How To: Disable remote control infrared receiver in Mac OS X

Every new Apple computer ships with an Apple remote, which can activate the Front Row program and let you play music, view photos or watch videos when you are away from your computer. However, Apple remotes will connect to all nearby devices, so people with multiple Macs or iPods close to each other, may have trouble controlling them with the remote. In that situation, it's wise to disable the Apple remote connection on the devices you do not want to connect to.

How To: Install a new single handle Delta kitchen faucet with Diamond Seal Technology

These days, faucets are incredibly easy to install (removing old faucets is the hard part). And if you have a Delta brand single handle kitchen faucet with DIAMOND seal technology, this video will show you the steps to installing it. This is also very similar to other brands of single-handle faucets. This video from Lowe's and Delta will help you with your installation. You'll need a screwdriver, adjustable wrench and allen wrench.

How To: Make crystal iodine

MAKE brings the do-it-yourself mindset to all the technology in your life. Make Magazine celebrates your right to tweak, hack, and bend any technology to your own will. In this tutorial, Robert Bruce Thompson shows you how to make crystal iodine. As Thompson says in the video, crystal iodine is currently a schedule one compound, and in order to buy you have to fill out a lot of paperwork and you'll end up on a DEA list. This tutorial gets you around that, but proceed carefully.