• 9 Posts
  • 94 Comments
Joined 3 years ago
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Cake day: June 22nd, 2023

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  • Fair point! As far as I can tell, the temp sensors are just beacons - anyone can connect and see that somewhere in your house it’s 72 °F, but who cares ¯\_(ツ)_/¯

    If you’re running on a Raspberry Pi, you can just use the onboard BT, whose drivers are updated regularly.

    ZigBee ones get occasional updates automatically detected through HA, and have to be moved to somewhere near the controller to update. I assume, as temperature and humidity sensing hasn’t changed, that these are security patches.

    BT ones get no updates, which either means their security goes unpatched, or it really doesn’t matter when all they do is shout out measurements into the void.



  • Of course! From an end-user the experience between Bluetooth and ZigBee sensors is basically indistinguishable, except for range.

    I have a detached garage, on the opposite end of my property from my HA controller, so the Bluetooth sensor out there specifically was a little flaky. The BT sensor is rated for ~160 ft but realistically it’s 50-100 ft if your home has walls.

    Swapping that one sensor to ZigBee so it could tie into my mesh network solved the problem. All other BT sensors have had zero issues, and their AA batteries unsurprisingly last longer than the 3R ZigBee AAAs, but both last at least 6mo.

    Some Shelly devices can be used as “Bluetooth repeaters” but I’m unsure of the specifics of how that works.




  • What’s the alternative, let the red states gerrymander and then just hope and pray that our new Republican-run house does the right thing and outlaws their one advantage in governing?

    Newsom isn’t doing this in a vacuum, California has had a really well liked nonpartisan districting committee. Texas and other red States have gone with the nuclear option and CA is responding in kind - even more importantly, this is something that has to be voted on by the residents of CA in a special election, rather than by a set of politicians already benefitting from gerrymandering.

    I absolutely hate that it has to be done, but as a CA resident I will be voting for it, and I will be pressuring my elected representatives to work towards passing federal legislation outlawing the practice and bringing things to a more even playing field.

    The do-nothing alternative is not an option.










  • Got it, so just vibes… Well, since you caught me on a Friday with a light schedule…

    Amperage rating is maximum load, not how much it uses the entire cycle. I just so happen to have my washer hooked up to a power meter, and look at that! It doesn’t draw the entire load during the entire cycle (which would look like a flat line)!

    Runtime is not correlated with energy use. Energy is actually much more closely linked to water usage, since it takes a lot of energy to heat up all that water for a cycle, and all that water weight causes extra load on the internal motors. The additional runtime of modern washing equipment is mostly idle time to allow for additional soaking, etc. and not contributing much energy use. Historical trends show a pretty steady decline in energy use. Here’s one study that found a 75+% decrease in energy use per load from the 90’s to the early 2010’s:

    This is interesting, because when partnered with data on tub size, it actually shows that even as loads get larger, energy use has been decreasing over time:

    (source is Association of Home Appliance Manufacturers again).

    Back to your original comments about refrigerators, I’ll just add, going from ~1400 kWh/yr in 1980 to ~400 kWh/yr in 2014 is a 72% decrease in energy use (which is amazing), even while real appliance costs have come down AND volume has gone up.

    IDK where you live, but 1000 kWh/yr for me would cost ~$250 ($0.25/kWh). Swapping a 1980s fridge with a modern one would pay for itself in just 2-3 years. Hell, I could even splurge for a fancy fridge and still have a payback faster than investing in the stock market.

    These gains, largely driven by regulatory efficiency targets, all benefit the consumer and the electricity grid at large. Being cranky about the fact that “they don’t make them like they used to” doesn’t change the fact that meaningful improvements have been made over time.