"DCA is known to cause nerve and liver damage, as well as some other side effects. It may also be able to cause cancer in humans, but that has not been proven." - from the link above.
There's no such thing as a small scale space elevator. The difficulty in reaching orbit or elsewhere in the solar system is not altitude, but enough horizontal velocity to continually fall and miss the earth or reach escape velocity entirely.
A space elevator must stretch to at least geosynchronous altitude which is 35,800 km. Low earth orbit of 300 km sounds like 1% the effort, but does not help. The top of a 300 km structure on the equator would move at only 0.25 km/sec, nowhere near the 4 km/sec needed for orbit. (It could help if you built a launcher or railgun on top of it, outside the atmosphere, to skip air friction, but it can't literally elevate you into orbit.)
I didn't mean small scale as in not reaching orbit with it, but as having a small payload.
I thought the weight of the elevator and its maximum payload with available materials were what keeps it from being built today.
I don´t know what information is available (and english isn´t my first language, so I may not know some terms), but off the top of my head, I think some performance data could be used to know if the engine needs adjustments (comparing fuel comsumption against what is expected for the usage might help), alerts for when the brakes need replacement, the locations where the car was turned off (to track if employees went where they were supposed to at the time time they were supposed to (a problem at my job)).
Probably could have worded it better, but I´m out of practice with the language.
Maybe because they are fringe networks, and the first thing new users find isn´t a very large community already established around the english language?
"DCA is known to cause nerve and liver damage, as well as some other side effects. It may also be able to cause cancer in humans, but that has not been proven." - from the link above.