fratermus

joined 2 years ago
MODERATOR OF
[–] fratermus 2 points 3 months ago

Why don’t you get a diesel heater for the winter?

I follow mild weather and so am very rarely in freezing temperatures. On chilly mornings making coffee and breakfast over propane warms the interior significantly.

If I ever did install a vented heater like that it would likely be a gasoline version, since the PM's tank already has a place on it to tap.

[–] fratermus 9 points 3 months ago* (last edited 3 months ago) (1 children)

Just a reminder that Texas has safe haven drop boxes at fire stations and post offices specifically for dropping off unwanted babies,

In case anyone thinks this is a new concept, one of the most influential pieces of early Renaissance architecture (Ospedale degli Innocenti) had a rotating drop-off port for babies. There was someone on the other side of the wall 24/7.

Edit: Atlas Obscura has an article on it

[–] fratermus 2 points 3 months ago (2 children)

2017 RAM Promaster 159" high roof. Most of the year I boondock on public land but in winter I come to a city where my VA provider is located.

My rig

[–] fratermus 6 points 3 months ago

What tips/ideas do you have for getting better at navigating the terminal, and getting a better understanding of how the os works

Running an OS as a virtual is liberating. Dive in, make mistakes, fix them (or not and have to reinstall or redo from the last save). No real consequences for exploring.

[–] fratermus 4 points 3 months ago

fruits typically are made to be consumed, in the sense that it benefits the evolution of the plant

I suspect some fruits are made so that only particular spreaders can/will eat them. Like some flowers are shaped to allow certain pollinators and exclude others.

[–] fratermus 2 points 4 months ago

Abbott's assholery knows no bounds.

[–] fratermus 1 points 4 months ago (1 children)

I would like to get an idea of what their actual performance would be like before I do the installation

PVwatts and similar models are quite useful for estimating harvest in a given time/place.

Its a strange location with some over hanging trees and some shading by neighbours fromntine to time but it could help provide some redundancy

Partial shading is brutal on solar harvest. It will be the tail that wags the dog in this scenario.

[–] fratermus 16 points 4 months ago

distrohoped

This should be a word. It would mean "trying yet another flavor because it might be The One"

[–] fratermus 7 points 4 months ago

What problem does this solve?

The need to demonstrate performative piety to the base.

[–] fratermus 25 points 4 months ago (1 children)

My father switched to linux (Mint, I think) in his 70s. I was in another state so he did it solo. He had a few questions but otherwise it was smooth sailing.

[–] fratermus 3 points 4 months ago

it accomplished my goal

That's the most important part, IMO.

I was in the boonies once with another camper and rigged up something similar for them. The goal of this one was to run small loads off the inverter while the sun was out. I had a spare motorcycle battery from another project, a small spare inverter, and a relay. The battery was basically just a way to stabilize the solar charge controller and was not intended to run loads in the normal sense.

  • 200w of panel -> 20A single-stage PWM like pictured in the OP -> 12Ah AGM
  • PWM load output -> relay trigger
  • battery -> relay power -> inverter -> 120vac loads

Basically whenever the sun was out they could run their small loads. When the battery voltage dropped below 12.7v (ie, sun no longer out) the relay would turn off the inverter and the loads would no longer be powered.

Since the controller was a single statge charger I set it to the Vabs of the battery, 14.5v.

[–] fratermus 1 points 4 months ago

I had a gasoline heater in a 1973 VW bus and it worked very well. For now it looks like most of the gasoline versions are still very expensive, although I've started to see knockoffs below $1000.

2
bears and batteries, oh my (mouse.mousetrap.net)
submitted 9 months ago by fratermus to c/houseless
 

... in which I relate my first wild bear sighting (with crappy pic) & and double the size of my LiFePO4 house battery bank .

 

The domain name is up for purchase ($9999.99 according to my registrar), so it looks like it's lost rather than just temporarily parked for a slightly overdue bill.

Luckily the site was recently backed up by the Internet Archive and the archived All, gpx, and csv links seem to work.

 

a swamp cooler and humidifier of this design are doing the same thing: blowing air through a wetted, porous medium. The goals are different (humidification vs cooling) but the mechanism is the same.

 

TL:DR: I saw a set of cheap panels with weird specs at Home Depot. I bought some to experiment on and to use as portables to augment my mounted solar.


Home Depot is selling 200w of panel for $114. That's $0.57/Watt. Not amazing compared to used panels (typically $0.33/Watt) but HD is all over the place and has free ship-to-store.

It also comes with mounting brackets and one of those single-stage PWM controllers. I'm not bagging on that kind of controller, but it's not a great fit for this particular set of panels.

#THE CATCH

The panels are a weird design, apparently 24 cells in series. Normal "12v nominal" panels have 36 in series for ~18Vmp. These have a Vmp of 12.0v, so I think we would call them "8v nominal".

This makes them practically unusable in parallel for charging lead or LiFePO4.

You could run the panels in series on the PWM controller since it has a 50v input max and the series Voc would be 30v. But, due to the way PWM works the panels would be running at in the 14v range at the most. This is way, way off the 24.0Vmp of the series array. I'd expect a max harvest of ~120w with that kind of setup. If these were normal panels in parallel and on PWM I'd expect a max of ~160w. We can go into the math on that if anyone wants.

The best case scenario IMO would be to run the panels in series with an MPPT controller. This would get us closer to ~170w max harvest.

some other thoughts:

  • The panels might work well enough in parallel for 3S Li-NMC because of that chemistry's lower voltage
  • HD has a 10% discount program for veterans if you provide them with a bit of documentation.
 

... in which I camped in a spot infested by mule deer, picked up spent brass, and trusted the local forecast enough to do my cooking off solar....

12
submitted 1 year ago* (last edited 1 year ago) by fratermus to c/houseless
 

in which I bumblefsck through figuring out why my solar setup no worky

38
submitted 1 year ago by fratermus to c/houseless
 

I was outside the zone of totality, so was still making some power.

Notice that panel voltage did not decrease like many think, it does. Vpanel is stable above ~10%-15% insolation, depending on the panel

9
submitted 1 year ago* (last edited 1 year ago) by fratermus to c/houseless
 

I did this because the hotplate was a bit more than my offgrid rig could handle comfortably. Been using it at ~500w to very good effect.

 

This is probably worth considering in general, but dealing with financial lockouts on the road is a particular kind of dumpster fire.

TL:DR: I deposited a check and things went weird (not an NSF scenario). My bank got spooked and locked not just that one account but all of my access for two weeks.

I scrambled to open new accounts elsewhere and move direct deposits over. Soon (like 12 hours) after completion my bank said "oopsie!" and restored my access to the accounts this morning. Having pre-existing accounts at other locations would have been stressful because one institution could not bogart my funds.

 

... up to six months in jail and a $1,000 fine.

Yay.

BTW, I keep track of laws like this in this RVwiki article

 

Like an idjit I smoked my old shunt by shorting it while moving stuff around. I eventually replaced it with the Aili type.

It works fine, but I don't like how the data is presented. Totally my fault, I saw what the display looked like when I bought it. Grrr......

 

House Bill 1365 was filed in January. It prohibits camping or sleeping on public property without a permit. The bill would give local municipalities the power to designate specific areas for sleeping or camping. Such properties must have restrooms, running water, security, and access to health care for mental and physical health. Also under the provision the specified areas may not negatively impact local businesses.

Here is the info if you want to follow along

view more: ‹ prev next ›