tv

174 Articles

Build An Analog TV Station

September 2, 2009 by 51 Comments

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With the transition to digital TV, the FCC has abandoned the old analog format. Luckily, you can take advantage of this and set up your own analog TV station. The FCC has a tool on their site to see what channels are open in your area to broadcast in. To broadcast, you need a TV transmitter, but cheap short-range models can be found on eBay or made at home [pdf]. Once you have a transmitter, you can pump in a video source, either your own content or videos from youtube. One group, OMGimontv is showcasing popular youtube clips on channel 14 in New York. On their site, users can vote for what clips they want to see. Although this isn’t as simple as making a radio station, it still has a lot of potential.

[via BoingBoing]

Music Visualizer (oscilloscope)

July 29, 2009 by 21 Comments

musicscopetv

The Music visualizer is actually a second build based on an earlier design[Thanks Roger]. The build was influenced by Zyra’s How to make an oscilloscope out of a television. The hack is quite simple, patch the output of an amplifier into the vertical deflection coils of the CRT. This is a good use for that old TV you may have laying around  but don’t want to recycle it just yet. While on the subject we had covered the Mac SE/30 audio visualizer in 2006. For those looking for something a little more hard core, here is a bit about Homemade cathode ray tubes.

World Smallest TV-B-Gone

July 4, 2009 by 41 Comments

uTVBG

The TV-B-Gone has proven to be a dangerous and versatile gadget. At Interactive Matter, they created an even smaller version with more sneaking potential. Called the µTVBG, it packs an entire TV-B-Gone in a 1.4 x 2.5 cm footprint and even has room for a programming header. He found some high-powered surface-mount IR LEDs that would match the original TV-B-Gone’s power. To drive the board, they used a CR1220 button battery on the bottom of the board. The whole thing is smaller than your thumb and should be easier to hide next time you wreak havoc.

Massive Etch A Sketch From TV Screen

May 13, 2009 by 32 Comments

[youtube=http://www.youtube.com/watch?v=Mhu3zojL5Y4]

[Jeri] put together an absolutely massive Etch A Sketch for The FatMan and Circuit Girl show. She had removed the DLP chip from an HD rear projection TV and decided to repurpose the 52inch screen. The movement mechanism uses pulleys from screen doors with nylon lines. The two sets of lines are fed in a criss cross pattern so that the parallel lines move in the same direction. The lines move tent poles in the x and y which controls the movements of the golf tee stylus. It’s driven by two high torque motors from $9 Harbor Freight 18V drills. They tried several different powders, but ended up using aluminum powder from an original Etch A Sketch because it sticks to everything. It will eventually be hooked up for IRC bot control once they get a large enough h-bridge.

[via adafruit]

IPhone Controlled TV Lift

May 2, 2009 by 14 Comments

pcb

[William] sent in this project where he’s using his iPhone to control his TV lift. He’s made a custom PCB with a pic18f122 microprocessor to communicate with the lift. He says it connects to the lift controls via a serial port.  You can see a video of it in action after the break. We really think the shadow turning into an arrow is cool. That was a lucky accident.

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Björk Teaches You About Electronics

October 20, 2008 by 89 Comments

[youtube=http://www.youtube.com/watch?v=75WFTHpOw8Y]

As we often suspected, [Björk] is quite the technical mastermind. In the video above, she teaches you about the ins and outs of her television. We think she’s making a strong bid as the next person to join Prototype This! Her hacking philosophy is the same as ours: “You shouldn’t let poets lie to you.”