@LlamaMountainStudioArts @AlphaCentauri I like that too. The inverter means running AC to the coop, which incurs minimal line loss compared to DC.
I had an actual electrician eyeball my wire guages and fuse between the inverter and battery bank. That inverter can support a pretty healthy draw, don't want to burn up wires.

@LlamaMountainStudioArts Put the inverter in the space near the batteries and it'll kick in a little heat to keep them warmerish.

@LlamaMountainStudioArts Yeah, 4 tracks.

Another question - is there any line power possibility? To supplement my system on multiple cloudy days I got a fairly cheap marine battery charger and have it wired straight into the batteries (via a DC Bus). That tides (that's a pun) me over those periods.

@LlamaMountainStudioArts Yeah, that's the stuff. So with good weather and passive solar the load goes down.

@Brisse @LlamaMountainStudioArts I think that kind of assumes perfect efficiency. Charging the batteries incurs loss, I think that's partly why the calculators round up.
Also that inverter is pretty efficient but it loses power to heat when it converts DC to AC.

@LlamaMountainStudioArts
Does that heater have settings or does it always run at 390W?
This is a hard solar task, running a heater in December.

Anyway, according to
https://dotwatts.com/solar-battery-charge-time-calculator/

800Ah and (I'm guessing) 6 hours of good sunlight in December means 16 panels (!)

Note it's possible to add panels any time. Better to get the batteries at one time.
/nosanitize

@LlamaMountainStudioArts
6 1/2 winter hours?
Oh hey, I have that exact Renogy kit.

The problem can be reduced to:
Winter solar gain is meh.
Batteries hate cold.
Panels are relatively cheap.

So my .02 is Buy panels until they can keep the batteries charged in December.

For actually calculation, it's not rocket surgery, just a bit of multiplication. I think you _need_ 3 panels and want 4 or 5.
See:
https://dotwatts.com/solar-panel-size-calculator/

@sfleetucker that's just a bad dream, here sip this nice soothing tea

@MrGoat

@Dogofalltrees might try khan academy. I hear good things from math profs.

@LlamaMountainStudioArts
It's in a vehicle which gets used by at most 2 people for ~2 week work or recreation trips. Fluids get dumped 3-4 days. The solids after 1 or 2 trips. 200AH of solar/battery, the fan goes forever, no problem.

Furnace what furnace who needs a furnace not this guy.

@estherschindler That is very impressive. I know that the upcoming 802.11 standard hints that human detection will be possible, and this is way beyond simple detection.

@sheseala Full bio-containment. The mold will be apocalyptic.

More animal science. You may have these in your pantry so it's good to know more about them.

"On the third day of Christmas: Getting to the bottom of how red flour beetles absorb water through their butts."
#science #butts
https://arstechnica.com/science/2023/12/getting-to-the-bottom-of-how-red-flour-beetles-absorb-water-through-their-butts/

@CJLavoie @LlamaMountainStudioArts
Around here those are the sites of old stills. Were y'all brewing moonshine up in NH?

It's a sciencey animal-testingy kind of morning

"...body-on-chip device has the potential to replace a significant number of the animals currently used in safety testing across a range of industries."
#goodNews #medicine #manufacturing

https://edinburgh-innovations.ed.ac.uk/news/new-device-could-replace-animals-used-in-drug-and-chemical-safety-testing

@redenigma Not sure if this suits the application... if not maybe worth a call/email to them.

https://www.bhphotovideo.com/c/product/1753026-REG/neewer_66601601_82mm_star_filters_kit.html

@Keysalagain wtah.

Damn got too much done today, set the bar way too high. I think this will be addressed via new year's resolutions.
#slackOffMore #beLazyer #2024