Not uncommon for modern large MPPTs to use 50 watts when idle. These 4 Epever Tracer's use < 10 watts combined.

by the way, these Tracer MPPTs have kind of a reputation as not great, and indeed they track a bit slowly and are underpowered compared with modern gear. But they're also *silent* and consume very little standby power.

My first one has been running for 7 years without any problems, so I decided to buy more.

I suspect that, since this was the cheapest decent MPPT for a long while, a lot of DIYers messed up the wiring enough to fry a lot of them, and so they developed a reputation.

They output close to the same voltage, but whichever one picks the lowest output voltage tends to get clipped first.

I have 4 MPPT #solar charge controllers now, and such interesting graphs.

These controllers don't share any communications, behavior is based only on observed voltage and there is some emergent behavior when there's not enough load for them all to run flat out. It's neat that this works.

In a situation where USB daisy chaining would be super useful. Thing is, I came up on the Atari SIO bus, that had daisy chaining, plug-n-play, etc. My 1984 computer was peak in this regard.

good day to install an outlet for an EV charger

welp, my EV does not provide any way to set the clock or time zone, it's all full auto... So I can't do anything to make it display my personal time zone, which of course remains DST year round

Gonna fix this with electrician's tape on the screen I expect.

More annoying is this means that a configured charging time swings out of alignment with when the sunlight is actually available. I will eventually fix that by controlling time in the EVSE, rather than the car.

Right now I'm feeling like it should prioritize charging the car, if heavier clouds moved back in, maybe give up after the house battery drains down 10% or so in an hour. That's only a small amount of cycling of that battery, well within usual amounts.

If the car were 75% charged rather than the current 40%, I'd have a different opinion, so I've added that to the data collection.

Like right now the house battery has 78% and is charging pretty fast due to slightly less cloud cover. There is enough power coming in to charge the car instead, though not at full speed.

Questions are, is it better to charge up the house at this point, or gamble that the power will keep being enough for a couple of hours and charge the car? The car has a contactor that I don't want to cycle too often. How often is ok?

Nice intermittently rainy cloudy day here and so I have started the slow process of automating control of my car's #offgrid charging.

What this entails is looking at the situation and deciding whether the car should charge, and then thinking a bit about how the program should work. While mostly doing other stuff. Eventually I'll write some code, and then tweak it over time.

This is similar to how I handled automating my offgrid fridge, that only charges when there's enough solar power.

1/

just finished up a 6 month marathon project of #gitAnnex development

and a cool new period is just beginning..

the really funny thing is I still use apt-get by habit so I didn't see this until that mastodon post

http://bugs.debian.org/755088

I saw this beautiful new apt display and loved it.

Then tonight I remembered, didn't I file some bug report once suggesting changing the old apt display, to be more scannable?

I did! It was "#755088 please show removals *last* in dist-upgrade"
filed in 2014.

They fixed it ten years later, the day after my birthday, and the result is much nicer than anything I expected. This is why I file bug reports, and why I keep old unfixed bugs open.

https://linuxmom.net/@vkc/113363547666856590

anyway, this bug is very convenient for me, since I am in a different timezone than everywhere around here as soon as yall "fall back", and often go to Bristol

Given that "Bristol" is mostly a city in England, I have my suspicions about how google maps manged to make this mistake. Over/under on it involving AI?

roasted a duck today

this must be what the solar industry calls a "duck curve"

#ivoted for Gloria Johnson for senate. (One of the Tennessee Three) Unambiguously happy about that! As to the rest well I drove my EV to vote on solar power and dropped off a load of rubbish at the dump on the way. Hard to be happy with every choice I make but doing the best I can.

* it's a hammock

my hovercraft* is full of leaves

https://git.joeyh.name/index.cgi/joey/house.git/commit/?id=b781e683ad1aba20c971ab8c6ae1c3fe61119ab1

yeesh #offgrid

tempted to go into detail about how I saw a racist cop in Florence #Kentucky harrassing a hispanic woman who was charging her car this morning

... but let's just say that his most laughable attempt was "you're parked awfully close to this pillar. did you run into it?"

Best part is the password change form recognizes my existing password and refuses to let me reuse it. But the login doesn't.

can just treat this as a 3 FA login process I have to do monthly, ugh