The Secret Life of a Mirror Cell
A couple of weeks ago, Wayne, Rob & I moved the collimated display over to Wayne's house. (I'll post pics of that soon)
Last week, Wayne did something that I feel stupid for not thinking of - he put a camera inside the mirror cell to show the process of the mirror formation from the INSIDE. It makes for a very cool video.
Collimating mirror draw-down from the inside - YouTube
It's kind of dark, but he did a great job annotating the interesting bits as they happen.
He's done a great job in tweaking the Arduino code to hold the mirror shape perfectly. We've abandoned the bleed-air system and use a Router speed controller to drive a shop vac (a Rigid ShopVac in Wayne's case).
Here's what the speed controller looks like:
Yes, the image is huge. Sorry about that.
It's a bog standard speed controller being run by some custom cut gears and a Futaba R/C servo. Works FANTASTIC. Speed control is a LOT more quiet and easier to manage than the bleed air system.
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