Short thread: Dan installs an energy monitor

I wanna get some solar panels eventually, and I figure Step Zero of that is gonna be figuring out in detail what kind of loads I'm powering and when, so I can then figure out some nuts-and-bolts stuff about a DIY solar system.

I got one by a company called Emporia, it was a couple hundred bucks. Which is a lot, but I kinda expect that like with the wee bluetooth OBDII reader and Torque on my phone, having a visible Shame Number telling me QUIT BURNING SO MUCH COAL DAN will, well, stop me burning so much coal

How this thing works is you get a box to stuff inside your electrical panel, and you get a bunch of little clamp-on current transformers that go on all your hot wires.

You also get a BIG pair that are supposed to go over the mains, but my panel's from 1990 and they lay it out better these days, I couldn't fit the main CT's on in any way. The company confirmed that I could omit these and the software would Math It for now.

Once you have all your current-sensing clamps installed in the panel, it's time to have a frank, open and nonjudgmental conversation with the people who share your space

Once it's settled that you can not in fact "just live like this babe" it's time to trim some wires.

You know those screw-on terminals that are useful when breadboarding electronics? Well this is like that but in a connector.

Just cut,
Strip,

and reinsert.

"The white goes to the right and everyone gets screwed" is easy to remember right now for some reason

With half the panel neat and tidy and the other half left absolutely feral, it's time to take a break for a week or two
Just kidding, the other half can have a little tidy too, as a treat
Reinstall the front of the panel, get the box connected to the wifi, get on the app, and recoil in horror as you come to understand the full extent of your house's wiring shambles.

The app is, to be fair, very good. It gives you a second-by-second graph of current draw, accurate enough that I just watched when my spouse's computer was updating and I could see how hard it was working at any given moment.

But it relies on a connection to Emporia's servers, so one day it might not be very good, but fortunately you can flash ESPHome onto these and fiddle around with Home Assistant. I didn't do that just yet, that'll be a project for another time.

Oh and apparently my fridge is on the same circuit as my furnace, woo

(I'm joking of course, I would never let my spouse see that horror, much less ask her to Just Live With It Babe)

((I wasn't joking about my furnace being on the same circuit as my fridge. See, it's already providing me with valuable anxiety))

Anyway the hardware is pretty neat. It senses and processes and updates quick enough that it can detect those big inductive kicks when a stopped motor starts or a big filter cap charges up. Thing'll draw kilowatts for a split second and then settle down to double or triple digit watts, and this sensor can notice it.

That's good, that's relevant, because when you're shopping for solar panels, physics is all "You wanna run a fridge? Eh, couple hundred bucks, NBD. Oh, you wanna START a fridge? Five grand, hand it over."

I've posted before and I still maintain that fridges should have kick-starters

@ifixcoinops Kick starters? Never heard that one before. All I've heard of to take care on the first inrush of a motor starting is a soft start. Today I learned a new word.

@benpocalypse I meant like on a motorbike

For your foot

@ifixcoinops Derp. Thanks.