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HowTo: Light Control Basics
( Mike Robinson)
Step 4 : Control Methods – Kit 74
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| | This is essentially the same as the Simple 8/12 channel controller, but can be purchased in kit form. One board gives you 8 controlled channels, each with LED indicator lights so you can easily see the status of a given channel. This board also has an extra chip to act as a buffer between the PC and the relays. This can help protect the PC in the event of a problem.
Pros: Everything is received as a package that you assemble and plug in or you can even purchase it preassembled.
Cons: The board is limited to 8 channels per parallel port, limiting you to 24 channels total.
Cost Breakdown: The price of a kit is normally $30-$35. They can be found pre-assembled for as low as $6 extra. You will still need a box to enclose the boards, a straight-through parallel (male/female), some wire, and either extension cords or outlets/boxes.
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