Looking to transmit some super-secret audio communications to your other spy buddies? A laser is the perfect tool for getting your sounds heard from a small distance—without anyone intercepting them— even if it's just a cover of your favorite pop song. A laser audio transmitter uses light rather than radio waves to transmit sound. This is a much more secure way to send audio communications because the laser is a focused beam of light, whereas radio waves are not controlled, so they can be pic...
HOW TO UNLOCK & USE THE FM TRANSMITTER ON NOKIA N900: Nokia N900 officially has FM Radio receiver but not a transmitter. Here are step by step procedure to enable & use the FM transmitter facility.
This instructional video demonstrates how to fix a transmitter antenna that won't tighten. To do this you will have to take apart your remote control radio. Luckily, this is not as difficult as it may seem.
Start with a UHF or wireless TV transmitter (which you can easily get cheaply off Ebay or an electronics store), then pick what channel you want to broadcast to. Make your own news station, music show or anything else and start broadcasting!
We will be setting up a portable radio in the mountains. It will be established in a clearing with available rocks for setup. The equipment we will be using is a Yaso radio with microphone and headphone, coaxial cable, slight line and weight, 13.5 battery pack, 2o and 40 meter antenna, pen and paper to record contacts.
You can easily share and transport your photo and videos on the Canon EOS 7D by using the wireless file transmission option. See exactly how sharing and downloading your files to computers and other devices works in this video. When the digital SLR camera is combined with the WFT-E5A Wireless File Transmitter, transmitting is easy.
With the TSA's full-body scanners occupying a great deal of airports nationwide, the debate remains as to whether air travelers should continue to be subject to immoral security techniques and possible health risks due to the x-ray scanning devices. The "advanced imaging technology" may help keep obvious weapons out of major airports, but scanning naked bodies seems more voyeuristic than crucial to national security. But while the argument continues, one woman is taking a stand… well, not rea...
This video shows how to create an infrared heart sensor using an Arduino controller, a couple of resistors, and an infrared light emitter and detector. This device will be used on the subject's finger, detecting the amount of blood which is flowing through the subject's finger. The amount of oxygenation of the blood is shown in the finger, which will cause the infrared light to reflect off the skin and to the transmitter which is close by. The fluctuations of oxygenation are picked up by the ...
The Canon EOS 7D digital SLR is the first Canon EOS camera that can trigger off-camera Speedlites with the cameras build in flash. The integrated Speedlite transmitter is fully compatible with the Wireless E-TTL Flash System. See exactly how all this works and how to use your flash functions.
If you're fond of remote-controlled vehicles, you might appreciate this video tutorial on how to program a Traxxas electronic speed control. The Traxxas R/C ESC models you will learn to program are the XL-5, XL-10, EVX-2 and VXL-3S. They all have a single push button to turn on and off the ESC and program it. To get the most out of your Traxxas RC vehicle, learn to set up the programming by calibrating the electronic speed control, transmitter, throttle profile selection.
Watch this instructional hobby video to properly set up and fly a remote control helicopter. Transmitter switches and servo wires should all be set up this way. Charge the flight pack and you are ready. If you are a beginner, leaving the flybar weights at the outer position will dampen the controls and make the helicopter easier to fly. As you improve, move the weights in for quicker response. The swashplate has a metal ball for reduced wear and precise control. The servos are screwed to the ...
What if you could have a secret hard drive connected to your computer that only you could activate? You can! Samimy shows you how to hack a remote controlled toy car and make a super secret hard disk drive in your computer, accessed via a secret activation key. This hidden emergency HDD can only be controlled by your key, regardless of how many people use your computer.
Long-time packeteer Bob Bruninga, WB4APR, developed the Automatic Packet Reporting System (APRS), which allows packet radio to track real-time events. It deviates markedly from the usual message- and text-transfer activity. Instead, APRS concentrates on the graphic display of station and object locations and movements.
The Nintendo Switch and Switch Lite are console gaming on the go — with zero regards for modern audio features. Headphone jack? Check. Bluetooth connectivity? Not so much. While Nintendo seems to think we're all happy to live like it's 2015, there's a way to use your AirPods with your Switch or Switch Lite for wireless and convenient entertainment.
In this how-to video, you will learn how to hook up your TB X41 Headset to your Xbox 360. First, hook up the HDMI cable. From there, you must have a fiber optic cable and an Xbox 360 audio adapter. All you have to do is plug it in right above the HDMI connector. The black input is where the digital audio input goes. This is where you install the fiber optic cable. Run that into the transmitter. The transmitter sends the signal to your headset. By viewing this video, you will learn how to easi...
Don't get us wrong - we love our iPhones and iPods - but sometimes we just want to kick back on the couch, pour ourselves a glass of Chardonnay, and go for the full surround sound musical experience. Get a more visceral exerpience of your favorite tunes by listening to them on your TV.
There are many different ways to connect an iPod to an in-car stereo, however, some work significantly better than others. In this tutorial, learn how to use an FM modulator to listen to your favorite tunes. This is different than an FM transmitter which is much less reliable. The modulator is the best method of connecting an MP3 player to a car stereo without an AUX input jack. Check out this clip to get started.
PerformanceBikes will show you how to install a bicycle computer. Whether you have a simple computer or a more advanced computer you be able to see the basic instructions. Start by reading the instruction, install the handle bell mounts, install the wireless transmitter. You then install your spoke magnet, then calibrate your computer for your wheel size. Make sure you have read your own particular directions. If its not working, make sure you re-read your instruction, check your set up or ch...
This instructional video offers a description and overview of how to set up your own FM broadcast station. Operating from 88 MHz to 108 MHz. It describes how a FM transmitter works and how to make one. It presents a simple di-pole radio antenna for FM broadcasting and how to make one. And finally it explains how with theses two components one can set up their own station from anywhere. The video was made by Seth Gadsden in collaboration with Stephen Dunifer and Free Radio Berkeley.
Become the producer of your own pirate radio show! The mind behind Free Radio Berkeley shows you how to build your own FM transmitter, which is what you need to start broadcasting. Once you have all your hardware, set it up and all you need now is programming!
A 2.0 baseball bat that contains an accelerometer, a gyroscope and a wireless transmitter synched up to a computer was created to track a baseball batter's swing and test how fast Ryan Howard's swing is. Watch this video tutorial to learn how this baseball bat was assembled.
Today could mark the beginning of a new age in wireless charging. The FCC has certified the WattUp transmitter, a revolutionary technology that could shape the future of smartphone charging. This new tech addresses many of Qi charging's limitations, and if things go right, may lead to a truly wireless future.
In a double-stuffed episode of Scam School, you'll learn how to fake ESP powers — a diabolical method to fake telepathy between you and a friend — and see a mind control trick from outer space with Scam School's first intergalactic student!
Apple caught a lot of flak for removing the headphone jack in their iPhone 7 models, but they definitely got the last laugh when preorders with a delivery date of September 16 sold out within minutes. Headphone jack or not, the iPhone 7 and 7 Plus are still highly desirable products, and consumers have confirmed this by voting with their wallets.
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...
In our first part on software-defined radio and signals intelligence, we learned how to set up a radio listening station to find and decode hidden radio signals — just like the hackers who triggered the emergency siren system in Dallas, Texas, probably did. Now that we can hear in the radio spectrum, it's time to explore the possibilities of broadcasting in a radio-connected world.
If you've ever wanted to track down the source of a Wi-Fi transmission, doing so can be relatively easy with the right equipment.
When it comes to sniffing Wi-Fi, Wireshark is cross-platform and capable of capturing vast amounts of data. Making sense of that data is another task entirely. That's where Jupyter Notebook comes in. It can help analyze Wi-Fi packets and determine which networks a particular phone has connected to before, giving us insight into the identity of the owner.
When learning Wi-Fi hacking, picking a compatible Wi-Fi network adapter is the first step to learning to crack Wi-Fi passwords.
Eavesdropping from a distance can be tricky because it usually requires some sort of bug or transmitter. It's easy to transmit audio through lasers, but you can also use lasers to build a microphone that picks up audio from a distance. LucidScience built the Laser Spy System for about $20. To make your own, you'll need a cheap laser pointer, an NPN phototransistor, a headphone amp, and a few other small pieces listed below. A light-to-sound circuit is installed in a small plastic box with the...
Keys are on the way out. They're clunky, take up precious space, and slow you down when you have tons of identical-looking gold ones on your keyring. Everything we can open with keys can now also be opened with wireless technology in just a click—so why use keys anymore? Sure, you can pay hundreds of dollars for an automated lock system on your house—but why do that when you can build it yourself!
Sputnik was the very first man-made object to be sent into space. Though it was a truly epic accomplishment, all this Soviet sky surfer actually did was transmit a constant beeping noise back to the surface.
In this post-3.5 mm world, Bluetooth is the most universal option. But a lot of older electronics still don't support wireless audio. Welp, now there's a dongle for that.
Smartphones and laptops are constantly sending Wi-Fi radio signals, and many of these signals can be used to track us. In this guide, we'll program a cheap IoT device in Arduino to create hundreds of fake networks with common names; This will cause nearby devices to reveal their real trackable MAC address, and it can even let an attacker take over the phone's data connection with no warning.
In a previous softModder tutorial, we installed CyanogenMod on our HTC Ones to approximate the look and feel of the Google Edition HTC One. Unfortunately, this rendered Beats and HTC's ImageChip (among other things) useless.
When the HTC One was announced, the fact that its IR transmitter was a side note more than a main feature made me dismiss it. When Samsung included one in the GS4, it became even less impressive. However, now that I actually have a One, I find that the "TV" app is way more than just one of Samsung's "S"-gimmicks. Step 1: Set Up Your Service Provider
Just as we published our rumor roundup for the HTC U11 Plus, the internet happened: A Facebook video revealed the flagship HTC U11 Plus and the midrange HTC U Life in all their glory. The video was in German and has since been taken down, but according to a translation, it revealed exactly what we should be expecting see at HTC event November 2.
An accelerometer/gyro goes onto an Arduino board and transmits the angular motion of the skateboard via Bluetooth to a virtual reality game I made for Android phones and Google Cardboard.
It's new phone season — new handsets are releasing every few weeks, we're seeing endless software updates, and the holidays are right around the corner.
Connecting to your headless Raspberry Pi on the go typically requires a network connection or carrying around bulky peripheral hardware like a screen and keyboard. With the help of an old-school connecting standard, though, you can log into your Pi from any computer using a simple cable. If you don't have a power source, you can also power your Linux distro over the cable at the same time.
