Active Electronics Posts

How To: Manually adjust the zoom position on the Nikon SB-900

This is an Electronics video tutorial where you will learn how to manually adjust the zoom position on the Nikon SB-900 with the diffuse dome attached. This is called the dome trick. It is not documented in the SB-900 user’s manual. The manual states when the diffuse dome is attached to the flash head, it gives a fixed zoom position of 14mm. However, if you attach the diffuse dome upside down, you can adjust the zoom position manually. The video then demonstrates changing of zoom position aft...

How To: Rip DVDs to build a movie jukebox home theater server

Want to play your video collection on any media extender, console or AppleTV? Step one is to get your movies off of the DVDs and onto your hard drive! If you're like most people you probably have a huge library of DVDs that you've bought and collected over the years. Unfortunately, it's an inconvenient format if you want to playback all that content anywhere around the house. So, learn how to rip and encode that stack of DVDs into a format that you can play on your Windows Media Extender, set...

How To: Build a universal motion alarm to protect your home

This video shows us the method to make a universal motion alarm to protect your home. You will need a reed switch with an alternating contact, a 9V battery with a battery clip, a switch, a buzzer, a small plastic box and a magnet. When a magnet is brought near the reed switch, it switches to the other contact and the switch is open. If the magnet is removed, the switch is closed and the buzzer starts ringing. Make the circuit with correct polarity for battery and the buzzer. Make a hole in th...

How To: Fix your iPod video without having to restore it

If you've ever received that grim error message from your iPod that tells you that you have to restore it, then you know what it feels like to stare down the threat of losing all your hard-acquired music files. This video teaches you how to make your iPod work again without having to restore it, preserving both the functionality of the iPod and your extensive MP3 and video library.

How To: Set a custom white balance on the Canon 5D Mark II

Most DSLR's like the Canon 5D Mark II come with pre-programmed white balance settings: daylight, cloudy, tungsten, fluorescent. But what do you do when you're in a mixed lighting situation and you want to balance between exterior daylight and interior tungsten light? If you set it to daylight, your tungsten light will be too orange. If you set it to tungsten, your exterior light will be too blue. The solution: set a custom white balance to balance the disparate lighting situations.

How To: Use the Nikon SB-900

Now that you've got your Nikon SB-900 professional-grade speedlight, make sure that you get the most out of it with this free photographer's guide, which will walk you through the flash unit's basic features and functionalities.

How To: Root Your Samsung Galaxy Camera with CF AutoRoot

As if Samsung's Galaxy series isn't already ruling the smartphone and tablet world, they've now moved on to digital point-and-shoots with their new Samsung Galaxy Camera. The smartphone/tablet/camera hybrid comes equipped with a 16-megapixel image sensor and a touchscreen equivalent to that of the Galaxy S3's size. Not only can you instantly upload photos and 1080p video to the social media of your choice, you can also surf the web and download apps from Google Play as you would any other And...

News: Japan's Flying, Tumbling Reconnaissance Sphere Soars at 37 MPH

Flying orbs. At first, you might think of the Tall Man and his army of flying sentinel spheres, equipped with zombie brains and a mini-arsenal of saw blades, drill bits and shooting lasers. But these flying orbs weren't conceived from the evil mind of a superhuman mortician—they were designed by Fumiyuki Sato, a researcher at the Japanese Defense Ministry's Technical Research and Development Institute—for something other than deadly deeds.

How To: Fix wifi on iPhone or iPod Touch

In this video tutorial, viewers learn how to fix the Wi-Fi problem on an iPod Touch or iPhone. Begin by clicking on Settings and select General. Then scroll down to click on General and select Reset Network Settings. When a confirmation window pops up, click on "Reset Network Settings". The iPod device will then reboot. Now click on Settings and select Wi-Fi. Then select a network to connect to. This video will benefit those viewers who have an iPhone or iPod Touch, and would like to learn ho...

How To: Use a digital camera as a webcam for Skype

In this video tutorial, viewers learn how to use a digital camera as a webcam on Skype. Users will need the AV cable and a USB capture device. Begin by connecting the AV cable to the USB capture device. Plug the cable to your computer and your digital camera. Users will need to download and install the Debut Video Recording software. Open the program and click on Device. Users may have to go to Options and configure the settings. On Skype, right-click the person you want to call and select Sh...

How To: Watch Hulu on iPod touch

If you're a fan of Hulu and want to take the service with you wherever you go, you now can. You'll need to subscribe to Hulu+, a monthly subscription service which will allow you to stream lots of Hulu's content right on your hand held device, such as an iPhone or iPod touch. Check it out today and get that Hulu goodness! You will be limited a bit with some of your selection, so you may want to find out first if your favorite show will be available.

How To: Email pictures and videos on a Kodak EasyShare camera

This interactive Kodak EasyShare camera tutorial takes you through every step necessary to email pictures and videos. If you have a Kodak EasyShare digital camera, you're going to need to know how to do this important step in maintaining and using your camera. Let Kodak teach you how. It's easy to send those videos and photos to your loved ones from your camera connected to your computer, and is basically the same on all Kodak EasyShare digital cameras. Email pictures and videos on a Kodak Ea...

How To: Fix an iPod with a "sad face" warning

In this video, harrymedan offers a do-it-yourself remedy to fix an iPod that has the "sad face" warning screen on it. As you follow along, he explains all the tools and supplies you will need to get started on this project. He demonstrates how to force the iPod into disk mode, leading you through, step by step. Once you achieve this he tells you how to connect the iPod to your computer and "Restore" the iPod back to factory settings, which usually fixes the problem.

How To: Clean your scratched compact discs with peroxide

This video shows you how to clean a compact disk using peroxide and toothpaste as the cleaning agents.First of all, put the disk in a mixture of water and a bit of peroxide and let it stay there for about 5 minutes. Then, you must take out the disk and apply a thin layer of toothpaste on the whole disk's surface. Let it sit like that for another 3-5 minutes. After that, clean the disk with water. Use it only when it is dry. If this method does not work, then you should either take the disk to...

How To: Begin circuit bending

Looking to get into the weird world of circuit bending? In this four part video tutorial geared towards beginners, learn in thirty minutes how to circuit bend. Tools you will need include a soddering iron with innerchangeable tips (thin pencil preferred), thin sodder, hook-up wire, a wire cutter, a wire stripper, a drill with drill bits, plyers (needle nose included), and screw drivers of various small sizes. Other useful tools include cresent wrenches for toggle switches, jewelers files, & a...

How To: Effectively remove CD & DVD scratches with toothpaste

In this tutorial, we learn how to effectively remove DVD and CD scratches by using toothpaste! First, you will need to grab the CD or DVD that is scratched and then grab a tube of toothpaste. Next, rub some toothpaste onto the middle of your item. Now rub your finger on the toothpaste until the toothpaste covers the entire DVD or CD. Now, let the item sit for just a few minutes, and grab a clean, dry, and very soft wash cloth. After a few minutes, gently rub off the toothpaste with the soft w...

How To: Reset and restore an Ipod nano to remedy freezing

In this tutorial, we learn how to reset and restore an iPod Nano. First, take your Nano and hold down the center button and the menu buttons down simultaneously. Continue to do this for several seconds until the device turns off. After this, hold down the middle button and pause button down simultaneously until you see a check mark on the screen of your device. Now, you can connect the device to the computer and open up iTunes. You can now set up all your songs and add new music to your devic...

How To: Set up a hidden camera system

This video shows you how to set up a mini wireless spy cam. Where you put it is up to you. Who you spy on is up to you. If you're wanting to keep an extra set of eyes on someone, watch and learn. So whether you're looking to put a camera in your bathroom or garage, go for it.