Stepper Directed HDTV Antenna

January 26, 2011 by James Munns 22 Comments

Credit: http://www.instructables.com/id/Computer-controlled-OTA-TV-antenna/

Broadcast TV has come a long way from adjusting the rabbit ears on top of the set just to get a fuzzy black and white picture. While nowadays there are often HD signals broadcast in most areas, it can often still be critical to redirect an antenna to get the best possible signal. By harvesting a stepper motor from an old 5 1/2″ floppy drive, and using a PC’s parallel port to control it, this adjustment can be handled automatically. Broadcast tower locations are easily found online, and once you have calibrated your stepper to face North, you are on your way to free HDTV reception.

What we would like to see is this antenna attached to a HTPC, and some kind of script to automatically direct the antenna for the best possible signal for the current channel. If anyone out there makes this happen, be sure to let us know.

TV Hack Bypasses HDCP

October 1, 2009 by Phil Burgess 64 Comments

hdmi

Reader [GRitchie] wrote in with an interesting find in his new TV set: with just some minor soldering it was possible to tap into an unencrypted hi-def video stream.

HDCP (High-bandwidth Digital Content Protection), used by Blu-Ray players and cable or satellite receivers, normally ensures a DRM-protected link between the device and a compatible display. Any properly-licensed device that forwards HDCP content (such as an HDMI switch box) is expected to provide encrypted output; those that don’t may get blacklisted by the system and become expensive paperweights. It’s something of an annoyance for users who feel this oversteps fair use applications such as time-shifting.

[GRitchie] found that his new TV with “InstaPort” Fast HDMI Switching didn’t perform this re-encryption step between the set’s internal switcher and the next stage in decoding. Soldering just eight wires directly from the switching chip’s output to an HDMI cable provided an unencrypted output that could then be received by a PC for later replay.

What’s not clear at this point is whether the capability is peculiar to just this one make and model, or applies to anything with the new Fast HDMI Switching. If the latter, it will be interesting to see how this plays out…nearly all of the major HDTV manufacturers are evaluating InstaPort for new sets, which would make any attempt at HDCP blacklisting awkward, to say the least.

Xbox 360 And LCD HDTV Rolled Into One

July 9, 2008 by Juan Aguilar 9 Comments

What happens when you take a little [Ben Heck] ingenuity, a little Lian Li utility, an Xbox 360 and an LCD HDTV and mix it all together? You get the Microvision 360, a combination LCD HDTV and Xbox 360.

The mod is not particularly complex. The Microvision 360’s creator [PvP_LostKnight] only removed the working parts from the Xbox 360’s case and mounted them to the back of the TV. A few of the inputs of the TV had to be moved and rewired, and a repurposed and painted tupperware container was added to cover the Xbox 360 parts. Unfortunately, [PvP_LostKnight] did not post a writeup, and even added “The wiring for this is horrible, I would not recommend anyone trying this.”

Setting aside his recommendation for a moment, a few of the advantages to his design are improved airflow to the Xbox 360 and better space usage. What we’d like to see added more than anything is power integration, with a single button to turn on both and a single power source powering the TV and the Xbox. See the proof of concept video after the break, or more photos and comments at the read link.

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