Tell us about yourself!
Yah'll catch all that? Good? Good!
Most of the comments are based on the claim to need 0 skills needed. I would say this should be clarified to 0 programming skills needed. You definitely need some familiarity with soldering and some PC knowledge such as what a USB port looks like.As far as the cost, perhaps the article should have been worded like "Cost down to $38 depending on what you have on hand".The real benefit I see here is you do not need to mess with compiling kernels, grepping packages, banging out command files, etc.In fact I have an old raspberry pi laying around and have been tossing around an automation project for a while, so going through my junk drawer my cost will be somewhere around $18. Excellent!
Perhaps some sort of conditioning of the wood first that essentially prevents any more expansion/contraction first, like dry it out completely and apply a liquid compound under pressure that sets indefinitely. Beautiful either way!
Couldn't you get all these parts from a garage door laser safety unit? Those are cheap to free.