I was just thinking today how I miss my DSL (Damn Small Linux) setup. A Pentium 2 Dell laptop, booted from mini-CD, usb drive for persistence. It ran a decent "dumb" terminal, X3270, and stripped down browser (dillo I believe). Was fine for a good chunk of my work day.
I ran it on a Via single board computer, a tiny board that sipped power and was still more than beefy enough to do real time control of 3 axis stepper motors and maintain a connection to the outside world. I cheated a bit by disabling interrupts during time critical sections and re-enabling the devices afterwards took some figuring out but overall the system was extremely reliable. I used it to cut up to 1/4" steel sheet for the windmill (it would cut up to 1" but then the kerf would be quite ugly), as well as much thinner sheet for the laminations. The latter was quite problematic because it tended to warp up towards the cutter nozzle while cutting and that would short out the arc. In the end we measured the voltage across the arc and then automatically had the nozzle back off in case of warping, which worked quite well, the resulting inaccuracies were very minor.
They're all but out of the launch business now but claim to be continuing research on it. There are a lot of skeptics that it would ever work (at actual orbital velocity).
My wife taught as a fine arts adjunct off and on at a large state university. Between gas, parking, and (relatively cheap) childcare we lost money every semester she taught.
There's one somewhere where they're eating lunch and I think Wally asks Dilbert if he has any extra napkins and Dilbert says he won't know until he's done eating.
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