I'm noob too. Here is my KISS version of the beginner's wiki page.
1. Computer running Windows.
2. Vixen software. You can download seuqences from the vixen site and from this site as well as other DIY sites. (You are not allowed to view links.
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3. DMX Dongle. I'm already building the LE, like you, so what not a big issue to add RJ's and I know it will work with LE. Others work too, but they are more $$. PM RJ
3.1 You will need a case for the dongle, it looks like a standard 2x3 project box.
3.2 You need the parts for the dongle there is a mouser list, but a couple parts are on serious backorder.
4. Cat 5 Ethernet cable to connect dongle to LE. (nearly all stores carry cat5 ethernet cable.)
5. Lynx Express (LE)
5.1 LE coop kit.
5.2 Case for LE (You are not allowed to view links.
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5.3 potentially 2 power cords, 1 if you limit the unit to 20Amps. (I'm using only 1 12guage feed.)
5.4 16 output cords. I don't have this element figured out yet. I'll be protoing a couple options.
6. At least one string of lights to test each channel of the LE once built.