Normally, the cable TV signal is strong enough to be split for 2 TV sets using a passive splitter. This amplifier boosts the TV cable signal with 18dB before the signal is split into 5. The design is based around a MAR-6 MMIC. This Integrated Circuit amplifies DC to 2GHz with about 18dB and uses only 15mA
http://pe2er.nl/CableAmp/index.htm
Shows that with a little ingenious wiring, a pair of headphones can become a pair of low-power rechargeable wireless speakers.
http://www.engadget.com/2006/02/21/how-to-build-wireless-speakers-from-rf-headphones/
Designed with PIC18LF45x PLCC, it is cheap and of excellent quality. It supports 64, 128, 256, 512MB and 1GB MMC and SD cards as storage media. FAT (FAT16) and FAT32 file system is supported.
http://www.techdesign.be/projects/020/020.htm
Want to put your game consoles or DVD players far away from your TV? Maybe a little closer to the couch so you don't have to get up to change DVD's... Now you can. By converting the RCA cable into a CAT5 (Ethernet) cable you can easily move all your console(s) to any corner of the room. CAT5 cable is a lot cheaper than RCA cables.
http://www.elephantstaircase.com/wiki/index.php?title=RCA_toCAT5conversion
This install cost nothing to me (because I had the parts already) other than the subscription fee. Now if you use new parts you can do this for under $30. Not to mention I can still move it back and forth from my car because (aside of one mount) I never used the stuff that came with it aside from the antenna. I’ll just get another antenna to mount in my car permanently.
http://dissidentsplayground.blogspot.com/2006/01/set-up-portable-xm-radio-in-your-house.html
Ever since TiVo came around, I was eager to jump on the time shifting bandwagon. After all, nothing makes a productivity junkie happier than turning an hour-long show into forty minutes. But for all its loyal fan base, TiVo never seemed like the right fit for me.
http://www.lifehacker.com/software/dvr/hack-attack-build-your-own-dvr-165963.php
Every time a jump into my car I slide my companion into it’s cradle were it gets some juice and then I attach the 3.5mm plug for the audio. Fine - so far. But when I exit the car and pull out the iPAQ out of it’s cradle it has happened more then one that I forget the audio cable and either the cable will break (big deal..) or the headphones output will break.
http://www.grynx.com/projects/bluetooth-stereo-in-the-car/
I decided to make a external control painel, to make it easier to change musics, volume up or down, toggle shuffle and many other features by pressing just one button. I found one winamp plugin that shows how to configure a external control using the Serial Port, being able to make 4 or 15 buttons control.
http://www.ovelha.org/pasteler0/2005/11/17/howto-external-winamp-control/
This simple adapter can be used to convert Y/C video (S-video) to a composite video. This adapter is useful in cases where your video output device has only S-video output but your signal source accepts only composite video input. This circuit works with both PAL and NTSC video standards.
http://www.epanorama.net/circuits/svideo2cvideo.html
To make the serial port play music, I added a block after the one-bit quantizer to account for start and stop bits. This block is still inside the feedback loop, and reduces the audible effect of the start and stop bits.
http://vivara.net/blog/?p=24