I’ve been using HA for a while; having my home just “do things” for me without asking is fantastic. My lights turn on to exactly the levels I want when I enter a room, my grass and my plants get watered automatically, heating and cooling happens only when it needs to. There are lots of benefits. Plus, it’s just a fun hobby.
One thing I didn’t expect, though, is all the interesting things you can learn when you have sensors monitoring different aspects of you home or the environment.
- I can always tell when someone is playing games or streaming video (provided they’re transcoding the video) from one of my servers. There’s a very significant spike in temperature in my server room, not to mention the increased power draw.
- I have mmWave sensors in an out-building that randomly trigger at night, even though there’s nobody there. Mice, maybe?
- Outdoor temperatures always go up when it’s raining. It’s always felt this way, but now it’s confirmed.
- My electrical system always drops in voltage around 8AM. Power usage in my house remains constant, so maybe more demand on the grid when people are getting ready for work?
- I have a few different animals that like to visit my property. They set off my motion sensors, and my cameras catch them on video. Sometimes I give them names.
- A single person is enough to raise the temperature in an enclosed room. Spikes in temperature and humidity correspond with motion sensors being triggered.
- Watering a lawn takes a lot more water than you might expect. I didn’t realize just how much until I saw exactly how many gallons I was using. Fortunately, I irrigate with stored rain water, but it would make me think twice about wasting city water to maintain a lawn.
- Traditional tank-style water heaters waste a lot of heat. My utility closet with my water heater is always several degrees hotter than the surrounding space.
What have you discovered as a result of your home automation? While the things I mentioned might not be particular useful, they’re definitely interesting, at least to me.
My office electric space heater, on low, uses more energy than our pellet stove.
My server (and network gear) also use slightly more energy than the pellet stove.
The pellet stove’s energy usage does not seem to be drastically affected by the setting it’s on - this winter I’ve been keeping it on setting 2 (of 5), but the other day I ran it at 4 for a few hours. No distinguishable change in electricity usage during that time.
Wait, doesn’t a pellet stove produce heat by burning pellets? I’d figure the electricity use would be similar to a gas furnace, where it’s just running sensors and cycling it on or off.
Don’t you have to buy pellets and maybe even load them into the stove, depending on what kind of delivery system/hopper your stove uses?
Yes to all of that, except for the comparison to the gas furnace: I don’t know how much electricity they use (I know some, because our previous house had one, but it’s not a ton - electronics, igniter, and blower fan).
Yes, I do have to buy pellets and load them into the stove; I like to say the stove warms me up multiple times: Loading the pellets into our pickup, unloading them and stacking them in the garage, moving the bags from the garage to the stove (okay, this is not that hard and doesn’t warm me very much), and then when the pellets finally get burned. They’re 40 lb bags, not terrible but some work to move. (On reddit, at this point, I’m sure someone would jump in and call me a wimp or whatever, but having stacked a ton of them alone multiple times, it definitely adds up.)
The stove has two motors in it, I believe: an auger to lift the pellets from the hopper and drop them into the burn pot, and a blower fan for the draft for the fire. There may be a third fan to circulate warm air across the heat exchanger tubes as well, but I don’t remember for certain. There’s also an electronic board to control on/off, heat level, when to run the auger, etc.
My comment above was noticing that the power it consumes isn’t very different on different levels - which isn’t surprising, the fan runs a bit faster and the auger has to turn a bit more often, but it wasn’t an obvious difference over a few hours. I have it on a power monitoring plug to detect if it’s running (for automations like turning on a ceiling fan to help circulate the warm air, and keeping track of run time so I know when I need to clean it). I’ll have to test different levels to see if I can find a way to detect which level it’s set on.
Ah I see what you mean, my mind interpreted what you were implying in a completely different direction from what you intended.
Which makes me realize I had missed on a big part of home automation by not realizing you don’t need to have direct communication with the appliances for an automated home.
I need to look in to smart water flow meters and maybe I’ll be able to implement one thing that’s been kinda a pain here: needing to manually check the water softener level to tell if I should cycle it before running the dishwasher or washing machine. I also need to move things to get into the utility closet, so it’s a pain. Instead I could measure the flow to know how much is left and reset it when the softener draws more power for its regen cycle. And then have something check it and send an alert any time either of those water using appliances draw more power than idle if soft water available is less than a threshold.
Also, for your problem, I’m assuming now that the intention is to turn up the ceiling fan if the stove is at a higher level? Or something to do with circulating air based on that? If so, what about using temperature sensors and the difference between them? I think that would end up being more efficient and effective than just going by the stove setting, since you don’t need high fan as the stove warms up and might still want the fan going after it shuts down.
Or if you want to know for some other reason (pellet use tracking?), you could combine temperate differential with current fan settings and calculate a rough estimate of how much thermal energy it’s putting out.
The fan just turns on low when the pellet stove is running, nothing so fancy as changing the speeds based on the stove setting. But that could be accomplished indirectly by just looking at the temperature in the area - if it’s a few degrees higher than, say, the living room, turn up the fan speed.
In an ideal world I’d be able to control the setting on the stove remotely - there’s a button to change the setting, which a switchbot could theoretically do. Of course to do that reliably, HA should know what the current setting is. I haven’t really looked into this much.
But, yeah, I do wish I had a way to track the pellet level to alert me when it’s getting low. I have a Salt Sentry to monitor the salt in the water softener, with a gauge in HA, and it warns me when it’s getting low. Which is great (when it works, sometimes it stops responding). I’m not sure if it would work as well for the pellets - the pellets would be right up against the sensor when it’s full. Another option might be a weight sensor under a leg - I have no idea if this is even feasible, but if is, it should be able to detect the 40 lbs change (noting that there’s some ash left in the stove, so the 40 lbs doesn’t completely disappear).
I use the power monitoring plug for a lamp in the living room that is dumb, but it has a 433 mhz remote. The power monitoring detects whether it is on or not. I have one of those Sonoff 433 mhz transmitters, so with the power monitoring plug I can control the light. This also means it can be part of my “vacation” mode where it perhaps turns on at some point in the evening, then turns back off. Also, it turns on when first connected to power, so I can do an automation that sends the “off” command at night if the house is in Vacation mode and the light is on.
I don’t really have it set up yet, but in theory the power monitoring plugs could warn me if the freezer stops working (or is running constantly), the sump pump stops working, etc. I have the power monitoring in place, but not the automations to detect issues.