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Tried this on a pi3 and it almost works.. I turn on the PSU and everything powers up.. as soon as I get to the step of gpio mode 9 out, it powers everything off then gpio write doesn't turn it back on. I tried the up/down/tri options with no effect. Also, I think you have a typo in the article it says gpio write 5 1 in one part then gpio write 9 1 in another part.
Swapped out the 1K resistor to ATX for a lower one and it's working now.
Held up great.. no warping.. no regrets. I cut a hole in the bottom shelf and made a platform with inset router plate that stores down there when I'm not using it.. it has a couple dowels on the bottom and I just pick it up and fit it into a couple holes on the top of the workbench when I want to use the router (I pull out the front vise and it rests on that for support). If anything there should be less chance of warping when laminating two pieces of wood together (think plywood). Modern wood glue is crazy strong stuff.. in tests I have done gluing corner joints with a biscuit and breaking them it breaks on the wood not the glue.
Seems we had the same idea (but yours looks way better!)I was thinking a neat addition would be using some bearings and a rod to make one of those sliding push sleds that swing down for routing smaller pieces. I wish I could describe it better.. it basically swings up when you don't use it then swings down and travels along the rod while you are pushing your piece through it with a handle, keeping your finger far away. I have only seen one commercially available and you have to buy their whole table setup it's not a universal one.
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