DIY AV Switcher

Engadget have a great tutorial on building your own solid-state AV switcher…”In this How-To we’ll show you how to wire up your own A/V switcher which you can expand and use any way you’d like, for composite, S-Sideo, component, even VGA signals. Sure, you can buy a newer, really expensive TV’s with multiple inputs (even component), but for those of us whose credit cards aren’t quite up to that challenge, more inputs for less cash would be rather desirable. Let’s get started… You now have the information required to build any type of custom A/V switcher you’d like. It’s a great way to hook up multiple gaming system or to put more than one device into a TV’s single component video jack. Have fun with it and see what you can come up with. Remember, since the switching is done with a TTL level input signal you can control the switches with other electronics such as timers, counters, PIC’s and Basic Stamps. Now go forth and multiply!”
Read the full tutorial at

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