What hidden "secrets" have you learned from your home automation?
What hidden "secrets" have you learned from your home automation?
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.
OP's post is a good lesson in the value of metadata and how important data privacy protections are.
I have a Dyson smart air purifier / heater combo in my room. It has a mostly real time app that shows whether the air is healthy or unhealthy. One night I was laying in bed and felt some gargantuan ass thunder brewing, so I aimed my cheeks toward the Dyson and watched gleefully as my air quality went from green to red. Technology is amazing.
I learned my air filter uses almost no electricity so I just leave it running 24/7 now.
Tell me more about automatically watering plants
I have a Rachio irrigation controller. I'd recommend OpenSprinkler to avoid being tied to a "cloud" service, but I didn't know that when I purchased my Rachio.
One of my irrigation zones feeds into my greenhouse. It splits off to two solenoid valves. When it's time to water my plants, HA triggers that zone through the Rachio integration and opens the appropriate solenoid valve that connects to my emitters. If my humidifier gets low, then it does the same thing but opens the other valve.
- My TV’s power consumption is basically doubled when the input is running at 2160p compared to 1080p.
- Running the portable AC in my office for more than 24 hours causes it to cycle off and on because the humidity collection sump fills up and needs to be emptied (it throws a completely unhelpful error of ‘Low Temperature’).
That's really interesting with your TV. I would actually expect power consumption to increase with 1080p since it's having to upsample the input to match your native resolution. Unless you're playing 4k content on a 1080p panel, in which case it makes more sense.
It’s a Sony 65” 2019 4K LCD panel.
2160p registers ~200W, 1080p ~100W.
The measured 2160p feed is from a 2017 Apple TV 4K, 1080p from a docked Nintendo Switch.
Note to self: game at 1080p with glasses off to lower electrical costs
So 4K is more efficient $/pixel then
While not publishing it, my weather station uploads my indoor temperatures to weather underground. The plaintext password is in every packet. It uses unencrypted HTTP.
My TV continues to chatter to random servers on the internet long after it has turned off. It transmits to a telemetry server on every single button press.
My air conditioners drain a lot more power when I haven't cleaned the filters. It's almost double.
A chromecast will try to bypass your router's DNS and go straight to Google's. It is constantly pulling data even if you're not using it. I'm fairly certain it's that slideshow. It's not cached at all.
My TV continues to chatter to random servers on the internet long after it has turned off. It transmits to a telemetry server on every single button press.
What's even more irritating to me are the random changes to the TV's UI. Turn it off for a while and I come back to an entire new set of menu entries and ads!
Home Assistant, OpenWRT and Adguard Home mostly fix those problems.
When my TVs are powered off a Home Assistant automation enables a couple of OpenWRT firewall rules. Those rules block all TV Internet access. When the TVs are powered on the firewall rules are automatically disabled and the TVs work normally. That along with Adguard Home's blocking of all UI ads makes my TVs almost user friendly.
@pHr34kY @corroded Not from home automation but from my #pihole installation.
My internet radio tries to send the title of each new song to itunes.apple.com. My smartphone tries to report any new installation / update of SW packages to googletagmanager.com.
Those are among the reasons I use a #pihole in the first place.
Onkyo home cinema amp was eating 50W when being "off".
Fixed it with smart multi-plug which power the amp when the tv is on, and cut power when tv is off.I had similar experience with my onkyo. It was ocuuring only when set in a "special" mode of being a mutimedia center of the whole living room - the mode where all the video and audio inputs go to it and it handles them and forwards the video output to the TV. I disabled it and instead connected all the inputs to the TV itself and forwarded audio only to the amp. This drastically decreased the standby usage. Maybe it applies to your situation too. Anyway, I am pretty sure draw this big in the standby is illegal in the EU.
I have too much HDMIs to plug everything in the TV.
Between the ISP TV Box, PC, Raspberry Pi, Game Console, DVD players.
Minor and obvious thing, but seeing it plotted finally made me recognize it: the temperature on my balcony is consistently lower than temperature inside my fridge for a good part of the year.
A friend in HVAC told me each person produces 350 btu of heat on average
Yes, but that is a person at rest. They generate more heat if they are active. Useful if you're planning the heating needs for movie theater as compared to an exercise studio.
My old Samsung printer can enter a state where it consumes ~100W without doing anything meaningful. It’s not obvious what is wrong, but without power monitoring I would have never realized this.
CO2 levels raise astonishingly fast when people are present in a room.
I have mice visiting my garage and I can tell when by looking at the motion sensor history.
My uninsulated roof stays frost free even at -15°C.
The biggest one was probably a combo of having an anemometer, and heat/humidity sensors in each room.
When it's cold outside, the top floor of the house (loft conversion) loses more heat. But it loses significantly more heat when it's cold, and the wind is blowing parallel to the floor joists.
I realised that because they're not perfectly sealed (old house), enough air pressure means that the floor void can easily hit external temperatures, meaning the rooms have cold on twice as many sides.
I will (eventually) get some suitable insulation in them to stop this.
By recording the electricity use in my house I noticed a 1500 watt spike at a semi-regular interval. It would happen every 50 minutes and lasted for a few minutes. While overall not that much of a draw, it sort of drove me crazy not knowing what it was...
Then I discovered that it was our septic system's effluent pump (the leach field is up on a hill). The pump was turning on way too often because ground water was leaking into the pump chamber. It's not supposed to do that. The tank was about 45 years old, so not a huge surprise really.
Basically, my home automation (or tracking, really) lead to an $8k concrete tank replacement (more or less, as we had the guy do some additional stuff while he was here).
That's not really a bad thing though. Maintaining your house is very important. Our well had failed a coliform test the previous year, and I've yet to get it re-tested to see if the new tank fixed that little problem. I've been giving everything some time to settle down.
The humidity in my apartment is affected far more by cooking than by showering.
Is it the food or just that your extractor fan is bringing in outside air? (Please tell me you cook with an extractor fan!)
Many many places (it is a trend now) just have extractor fans that simply run through a shitty filter and blow it back into the room. My old rented house (it was just renovated in 2021) was like that along with tons of moisture problems coming from a half-assed renovation (turns out, the church officials were embezzeling a ton of money from the church company that came out a few years later) of a protected monument house from the 1500s.
Some apartments can have a charcoal filter hood instead of a fan that extracts directly to the outside, depending on ventilation design. My fan is one of those.
I've caught the front door and garage door left open several times (kids)
I found out my garage under my bedroom is primarily why my room is hard to heat and likely has poor insulation in the ceiling.
I found out my Samsung TV was sending a LOT of data home.
I know every time my Roomba gets stuck so I can go and locate it before the battery dies.
I know when my unraid Dockers fail to update and accidentally delete the old containers, so that I can go and re-add them.
One of my children were doing remote learning and I would get an alarm if he didn't get up in the morning and start using his Chromebook.
How much data is a lot? Mine lost wifi privileges for putting ads in my stuff, but I'm still curious.
It was burning a few gigs a day. Which wouldn't have been noticed except I wasn't using it to stream anything. I originally put it on the time out vlan, But my wife wanted to make changes to art mode, and of course that requires cloud connection. I should probably go back and isolate what it talks to and see if I can get art mode to continue working without letting it do whatever high bandwidth application it was trying to do before.
Do you have some sort of notification for the docker fail one? I'm currently just periodically visiting the previous apps page in the Apps tab, but that's annoying and manual.
Right now I'm using uptimekuma, It writes to a private telegram group I set up just for alarms.
I also have set up some user scripts that do curl calls to write to telegram on certain system conditions, like when I add a file to IPFS.
Probably the most surprising thing I discovered with Home Assistant was the amount of electricity used by our washing machine in the supplied one in our rental. I hooked up a Kuaf Energy monitoring plug (PLF12) and was able to track each cycle by measuring the power draw. Something like this:
Fill 6.00 - 7.00 W Wash 493.5 -788.5W Drain 405-450W Spin 8.0 8.84 A + 498-800W
These are my rough notes and observations, I'm planning on creating an automation to indicate on our dashboard the current state of the washer making it a tad smarter. :) Also to alert us that it's finished!
The other one I discovered was the amount of energy the Dishwasher pulls. . It's a complex power draw and I've only managed to get our dashboard to show it's running successfully. There is a huge variance in the power draws, that sometimes, I found that if it jumped by a volt or two, it would falsely say it's in the second rinse cycle when it's really filling the basin. Nonetheless, it was surprising to see how much less energy I thought the were using was.
I put a 4-1 one Zooz sensor up above the hall pointing at our front door, so it captures every entry point into our upstairs apartment. When I first set it up, it was a bit unsettling to have it detect even the smallest movement, eventually some adjustments were made and it's more refined and not so trigger happy.
The biggest metric I discovered is just how humid our place gets! As a direct result, I bought a dehumidifier which we run year round. Living in the Pacific NW makes managing humidity challenging. (You know the old jokes about it being rainy all the time, yeah...it sort of is) As a result, we have a dehumidifier which runs year round almost non-stop. Not so much in the summer months. While most people buy a humidifier for the winter, we run it more in the winter as it's too cold to exchange the outside air with the in which can lower it down to as low as 10-15% in the summer. We learned our comfort levels to be around 45-50% instead of the 75-80% it was before we bought the dehumidifier.
We are planning on relocating sometime this year to the other end of our state which is a different climate, so it will be a new discovery period of temps and humidity for us, for this, Home Assistant will be coming along for the ride! :)
I can see if someone is on the toilet and having a Nr.2 by checking the power draw of the Japanese style toilet. (I also have a presence detector). I do not monitor the first part intentionally, though.
I unintentionally catched some birds eating on camera and that led to us installing a designated bird cam - in a 3D printed bird house. The AI model for identification is still in the works though - there aren't any good European based ones available as open source so I still will need to work out my own.
I found out the kid is reading FAR more than thought and is using the PC far less than I thought. Sorry kiddo!
CO2 is going up far more than expected,yes. What I found more interesting, though, is the direct connection between the humidity and my sinus infections - I always get them if my room air gets to dry.
Cooking releases an ungodly amount of VOC and uses FAR more electric energy than I thought.
And: After two years of optimisation I can control the temperature in two very sun exposed rooms just by using the covers and a weather forecast extremely well. Means they are up to 4° colder in the summer than before and 10° warmer in winter. Sadly this does not apply to all rooms.
And last but not least: Heating is the only point where home automation really saves energy here.
I had a terrible run of sinus infections last year so I've been using a humidifier and been checking the humidity in the house daily this winter. What percent range do you find is ideal?
I try not to go below 47%
Did you try BirdNET Pi?
Bird-net pi also runs here,but it provides audio identification,not optical identification.
Was going to suggest this - I've not used it myself but friends have and the model apparently does have fairly good results https://github.com/kahst/BirdNET-Analyzer
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.
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?
If it turns into a problem I wonder if you report that to your power provider they can investigate it. I assume it isn't much of a drop though 240v to 210v ish drop.
We had a UPS that would report under voltage every winter at a remote radio tower. We sent the info to the power company and a few months later found the issue and we never got an alert again.
I assume it isn't much of a drop though 240v to 210v ish drop.
If you had that big of a drop, it would likely have already caused the local power grid to trip and turn off. That hardware is not designed to run at a very large frequency differential from normal, and while 30v might not sound like a lot, it's still enough to massively change the Hz of the AC.
A voltage change on the consumer side means increased current through a resistance somewhere in the line... Something undersized or overloaded, or a bad connection, for that kind of voltage drop.
Still, that should not change the AC frequency of the grid significantly in this case... You're never going to have a different frequency than the power plants. They're all sync'd and the entire grid would go down if the frequency changes too much.
My old furnace was hilariously oversized for the house.
One of the nifty things about smart thermostats like Ecobees is that you can pull usage data from their web portal. I grabbed a CSV file covering a cold snap last year that reached a 100-year record low, and using Excel I summed up the total heat output while we were at that low.
The furnace was only running 50% of the time, even when it was with a couple degrees of as cold as it's ever been where I live.
Needless to say, when I got a new system installed I made sure it was more properly sized, and given that I had a convenient empirical measurement of exactly how many btus I actually needed in the worst case as scenario, that was easily done.
Not sure if you got this idea from Technology Connections but he recently didn a video using this exact premise.
I checked HA and found that A) my furnace fan is likely dying as the furnace overheats and power cycles frequently and B) despite the overheating, or furnace has only run at most 25% of the day during the coldest temps we've gotten this winter (which has been mild and only down into the low 30s). I think if/when we replace the furnace we can safely cut the BTU rating down while still maintaining our desired temperature.
I'd been planning for a new HVAC system for a while when that video came out, and it gave me the idea to cross-check the thermostat data with the Manual J calc I'd already done. They were in general agreement, though the Manual J block load was more conservative than empirical data for a design day.
In your case, since you don't have data from a healthy system on a representative heating design day, I'd suggest using a web tool like CoolCalc to simply calculate an approximate Manual J total heating and cooling load, and use that to guide your choices.
Having an oversized furnace really isn't a bad thing, and only having it run half the time sounds like a good thing to me.
It wears out the furnace doing short burts and the house doesn't get heated evenly. I had the original furnace from 1968. When I upgraded everything with insolation and better windows, I went from a 80,000 BTU on/off furnace to a 40,000 but modular furnace. No more sweating after 10min and then cold. Just evenly bring up the temp over a longer time. https://youtu.be/DTsQjiPlksA
A little headroom ain't bad, but it had three times the required heating capacity for my area's "design day" low, which meant that for most of the winter it was kicking on for maybe 5-10 minutes per hour and then leaving massive cold spots in the house, because the thermostat was smack in the middle and all the walls were bleeding heat.
My new heat pump is just about 2x the design day heat requirement, but that also means it's got capacity to handle extreme lows without resorting to resistance heat, and in any case it's fully modulating so the house has stayed quite comfortable so far.
Evcept you spend more on it for no reason
One of the nifty things about smart thermostats like Ecobees is that you can pull usage data from their web portal.
Ecobee also let's you connect over HomeKit and allows you to control when the internet is out 😉at my old house I actually blocked the mac address for non internal and just had HA automatons take care of the rest.
Most recently I discovered my house naturally has one of those "the sun will shine exactly here at one time of the year" things going on, like a treasure hunting movie trope. A reflective mosaic hung on my neighbor's shed is in the right spot that, in late December, sun reflection causes a arc of sunshine to slowly sweep over and brighten up spots on my back porch for an hour or so.
I recently made an ESPHome based weather station that includes a LUX sensor. I was updating a lighting automation so it would turn on sooner during dark mornings using the new sensor and I noticed a daily spike in light. The neighbor put up that mosaic several years ago and it took a HA histogram for me to notice.
Awesome. On a similar note, there is a time of the day at a certain part of the year when our TV seems to receive random remote control button pushes. I know it's solar infrared but hadn't considered it may be a reflection instead of direct radiation.
Did you use any established project for your weather station or just make it up for yourself? I've been interested in building an esphome weather station as well.
I, too, have such an interest. One thing I ran across about two months ago that I thought was neat was a project for a DIY wind gauge with no moving parts.
Just made it myself but its really bare bones right now. I'm planning to making an upgraded one if I can give up the dream of adding the anemometer which I just don't have a place to mount right now.
ESP32 running ESPHome, a (calibrated) BMP280 for temp/humidity/pressure, a BH1750 light sensor, some math to get absolute humidity and dew point, and a case I 3d printed.
I never thought about temperature/humidity sensors! I know some gardeners that use them in various greenhouses, but that's interesting stuff. Is there anything yall've learned about the power efficiency of heating/cooling methods? Currently we're making a lot of baked goods and stews to keep the house warmer and more humid, but I don't have any data on actual power use changes.
Check out Technology Connections on YouTube. Specifically this playlist on heat pumps.
The only thing more efficient would be mechanized Solar shades and passive techniques.
I've had a temp/humidity temperature in all house rooms for a few years now, and it's dead useful.
Balancing the radiators and TRVs so everything heats up evenly.
Spotting anomalies (top floor loses a lot more heat when the wind is blowing)
And setting the flow temperatures for the radiators, as I can see the rate of heating compared to outside temperatures.
Wait, how do you make your smart bulbs turn off and on automatically when you enter/leave a room? I've been using them for years and I always have to manually trigger them with an app! And how are you measuring power usage?
I use a mmWave presence sensor and PIR motion sensor in each room. I've found that mmWave sensors tend to give false positives and motion sensors don't work too well when a person is at rest (say sitting and watching TV). Lights come on when the motion sensor triggers, then they shut off when the presence sensor has been idle for a set time, usually 5 minutes. This works perfectly for me.
- Motion sensors. The mmWave are very sensitive but also expensive. Nice for rooms where you sit still or lie down for longer periods, such as an office or bed room. PIR sensors are the cheap ones, very useful for hallways, stairs, kitchen and toilets.
- Some smart plugs measure current. Innr has a nice zigbee smart plug with a physical button and monitoring for around €20.
FYI If you have a Zigbee bridge, you can just connect most zigbee devices to it and you are not tied to the app or devices of the bridge's brand.
You'll want to research "room presence" systems.
Here's one I've been looking at implementing for an example: https://espresense.com/
If you go this route, you'll absolutely need mmWave sensors as regular PIR sensors only sense movement not presence and you'll experience lights shutting off when you're sitting too still in a room. I've considered setting this up a few times but want mmWave and PIR sensors with a lux sensor all-in-one and the market for this is extremely small. I think only some sketchy Tuya and the Everything Smart Home youtube channel have sensors like this but they're expensive and I just haven't pulled the trigger.
Outdoor temperatures always go up when it's raining.
Are you saying the outside weather temperature rises when it starts to rain, or am I understanding that incorrectly?
Depending on the location, but
- Often rain comes along for the ride on a warm front as it moves over the property (although cold fronts also carry rain)
- In winter, the rainclouds act as insulation and so rainy days are warmer than blue-sky days
It's probably rain clouds trapping heat from escaping into the atmosphere, and humid air equalizing the temp by sucking heat off of high heat capacity surfaces like rocks and cement, warming the air.
That's just my guess though. I have no relevant scientific expertise.
Along a similar line, ground temp (~200mm deep) lags air temps by about 12 hours
