asciilifeform: in other lulz, the 'bernstein as nsa stooge' concept slowly percolates from the republic, https://sporaw.livejournal.com/538323.html

asciilifeform: ( but no, at least over here we dun have 'enterprising'. we have repair crews that barely repair )

asciilifeform: the spread of copper bandits might change the equation tho.

asciilifeform: in some places they guard'em, but usually not (picture the cost), typically proprietor figures that monkeying near hv lines is self-punishing

asciilifeform: just stand in the near field. ( recall the folx with unplugged fluorescent lamps )

asciilifeform: for these, frying pan wound with magnet wire ~at ground level~, as tuned circuit, is actually enuff

asciilifeform: i'd avoid ^ these , cable with multi-kV insulation aint cheap

asciilifeform: even on street light line. certainly enuff to run just about anything you might care to fit in the box.

asciilifeform: can get tens of watts, this way.

asciilifeform: think back to the old-school noncontact ac voltmeter, same principle.

asciilifeform: ( use the high:low variant )

asciilifeform: for inductive coupler, 5-6 turns of insulated copper around $victim will suffice

asciilifeform: btw peltier, solar, piezo are not the only possib harvests. there is also inductive coupling from mains cabling ( street lights, etc , user yer imagination )

asciilifeform: ( don't put logger in the box per se, will miss good % of the flips, as e.g. sd card eats ridiculous current , which the harvester may or may not at a given time be able to supply )

asciilifeform: from the intervals, can compute energy in.

asciilifeform: wire it up to a (battery-powered) universal remote thing, with the rx end indoors , where you can log.

asciilifeform: think of the harvester as an impedance matcher between the physical source of energy, and the consuming device.

asciilifeform: ltc3108 has an intake transformer . the demo board is sold in two variants, one where it has a low:high winding ( for peltiers, solar ) and one where high:low ( for piezos ). the latter is for noise/vibratory harvester -- e.g. tree branch in the wind.

asciilifeform: from this, in turn, can say, e.g., 'in the daytime, september, such-and-such latitude, can get J joules/sec , then after sundown, J', ... ' etc

asciilifeform: from this, can calculate practical energy availability.

asciilifeform: how to do : it charges cap ( the demo unit i have here from china, has 4 1F 2.2v caps ) and runs a boost converter from these, as well as lighting up 'power good' pin when 3.3v (from the latter) is available. so you put a test load on the 3.3v out ( say , 1W 100 ohm resistor ) and record events when 'power good' signal changes.

asciilifeform: mircea_popescu: want to record not simply voltage, but just how many milliwatts/hrs available from the harvester ( in field practice you cannot do much of anything with e.g. peltier without harvester )

asciilifeform: ( there's several similar chips on the market, afaik that's the cheapest )

asciilifeform: it's convention, is all, the high ports were reserved for the local ends of tcp pipes

asciilifeform: linux traditionally had a cutoff where 'localhost only'

asciilifeform: mircea_popescu: traditionally >=32768 aha

asciilifeform: i see no particular reason to care

asciilifeform: hanbot: this actually worked ?

asciilifeform: it's a pile of shit, just like emacs, kernel, gcc, all the rest of the sad sack of shit errybody is stuck using.

asciilifeform: so then where is problem

asciilifeform: mod6: if on the shared machine, gotta avoid stepping on one another's feet, say which port you're gonna listen on