r/homeassistant 13h ago

Dryer notification idea

I'm looking for a small light up button or something I can use so my wife can see when the dryer is done. I'm going to use a vibration sensor. And was thinking of a small led sign but looking for other ideas also

14 Upvotes

58 comments sorted by

34

u/brinkre 13h ago

I use a smart socket with power measurements (3680W) that show direct when it's finish because the energy consumption drops to 0 right when he's finished.

10

u/Kingboy_42 12h ago

I use the same method but with the Appliance notifications and actions blueprint which works very well and even allows you to send notifications to different devices.

4

u/Adventurous_Grape279 13h ago

I have never found a dryer plug smart outlet. If you have a gas dryer with a standard plug this works though

7

u/biblicalrain 12h ago

I use CT clamps to monitor current of the wires in my main panel. Look at something like the Emporia Vue or similar. One benefit is that if you go this route, you can get a lot of different power info at once.

4

u/yorb 10h ago

I just started doing this with the Vue, works great except my washer and dryer are on the same circuit so I haven't figured out a good way to distinguish them yet. My notification just says "Laundry is finished" and you can figure out which it is when you get there 🤪

2

u/cdewey17 9h ago

Gotta throw the wet laundry on the ground if the washer is done first. Those are the rules.

2

u/i_do_technical_stuff 7h ago

Vibration sensors on each, can tell them apart if it's just a on/off notification and don't need to record power draw

1

u/yorb 7h ago

Ah but they're stacked, what vibrates one shall vibrate both, unfortunately.

2

u/i_do_technical_stuff 6h ago edited 6h ago

Bummer. Well then, at least in US, dryers have high amp plugs but washers have normal plugs -- so could use a normal power monitor plug on the washer and compare it against the circuit total draw.

 

  • Circuit has amps, washer does not: dryer running

  • Circuit has amps == washer plug amps, washer is running

  • Circuit has amps > washer plug amps (both non-zero), both are running

  • Circuit has no amps, nothing running

 

I agree with another commenter tho: you can probably tell them apart by their amp draw. A dryer will pull far more amps than a washer. I plot my Vue power draw into HA and I know I can tell apart which fans are running in my greenhouse based on if I see 80 watts vs 130 watts draw (or a combined 210 watts).

1

u/yorb 6h ago

Yeah except the washer plugs into the dryer with a special plug, not easily accessible the way it's mounted either. So literally only the dryer plugs into the wall. Good idea though, if we had normal appliances.

1

u/TheBlueKingLP 10h ago

Maybe current difference?

1

u/yorb 7h ago

Good idea, except they don't have consistent currents. Both have a really random-seeming sawtooth-like pattern, so even though the dryer is like 10x power draw, it's really difficult to tell them apart when they're overlapping (which is most of the time, we usually run multiple loads back to back)

1

u/TheBlueKingLP 2h ago

Maybe multiple thresholds?
For example,

3, < 10 = washing machine 10 < 12 = dryer 13 = both, etc

3

u/TheBlueKingLP 10h ago

The Vue is a good one. Especially the newly released one. Finally has Ethernet. It runs on a unlocked ESP32 I.e. esp home is possible without soldering anything. I would like to get my hands on one but I think my panel is too crammed for it.

3

u/gre_am 7h ago

This is the way. Emporia flashed with ESP Home

2

u/CorithMalin 3h ago

In the UK and Europe, dryer plugs are the same as standard plugs because all our plugs are on 240v.

2

u/Yutenji2020 11h ago

Came here to say this. My only refinement is that I test the average of the last 5 readings at 1-minute intervals in case I get a false ā€˜0’ reading.

2

u/CorithMalin 3h ago

One thing to be careful about is the tumble dryers that don’t have heat pumps pull a lot of power (3+ kW!). I wouldn’t trust a cheap power monitor with that given how long they pull it for. So make sure it’s from a deputy brand AND rated for 13amps.

1

u/6SpeedBlues 8h ago

I do the same, but my dryer is gas.... So, only need a 110V outlet. Fur a 220V electric, I suspect you would need an induction sensor or similar.

2

u/GlenGraif 17m ago

Yep, that’s what I do too. I let HA send a message to my phone and my wife’s when the power usage of our dryer drops below 5W for more than 3 minutes. That automation can only trigger when a toggle is turned on that gets turned to on when the dryer starts using more than 300W.

10

u/logikgear 12h ago

I use an LED strip mounted under a photo frame in our living room. The strip is running WLED and split into two segments, left side for washing machine, right side for Dryer. Power monitoring runs automations to change helpers and change the LED colors. Blue means running, green means done/needs unloaded. Then everything clears with a door sensor on the dryer.

4

u/biblicalrain 11h ago

I do basically the same thing! Red is running, green is done. It's an animated effect when the laundry room doors are open. (Still easily viewable when doors are closed)

2

u/logikgear 11h ago

I like that idea. I might have to animate the green just so it catches our attention more.

1

u/Halo_Chief117 10h ago

That’s a cool idea and well implemented where it’s not an eyesore. And I can’t help but notice… is your kid unintentionally flipping you off in one photo? šŸ˜†

1

u/logikgear 10h ago

No it's one of the pictures we call her mob boss photo.

2

u/Halo_Chief117 10h ago

Lol I see it in the hand gesture. ā€œYou come to me… asking me for a favor. Asking me to eat these mushed vegetables.ā€

1

u/logikgear 9h ago

🤣🤣🤣

1

u/cdewey17 9h ago

Now level it up: light up just the section under whose turn it is to unload the laundry 🤣

1

u/logikgear 9h ago

Unfortunately the photos are all of the same now 8-year-old child so that's probably not going to happen. 🤣🤣

1

u/cdewey17 4h ago

I see no issue with this. Sounds like they have a lot of laundry ahead of them

5

u/Manodactyl 11h ago

I stuck a temp probe to the outside of the dryer vent with some of that metal tape. A little bit of tweak to get the trend sensor right and I have a dryer done notification

1

u/bavotto 7h ago

I have temperature plus abosolute humidity on the vent (it isnt ducted anywhere rather than in the room as is typical for Australia), plus power. I compare it to the temperature and humidity nearby to see when the temperature is high enough and the humidity is low enough for the clothes to be dry.

3

u/YowaiiShimai 13h ago

third reality has some rgb night lights that I use for this! not a button tho

2

u/Competitive_Owl_2096 13h ago

Push notification to phone?

1

u/Adventurous_Grape279 13h ago

I actually use a method that sends a notification every 30 seconds until the dryer detects movement again (or I go into the app and hit the kill switch)

It works really well because I will forget after 1 notification lol

2

u/_Zero_Fux_ 12h ago

I have a sensor on the door built in, so i get persistent reminders until the door opens. One of my favorite automations.

1

u/very-jaded 9h ago

I turn the laundry room light on when the washer or dryer is finished. The nagging stops when the light is turned off. No extra sensors needed.

1

u/Unattributable1 37m ago

I have mine reset when the power usage goes up to the level based on when the dryer is opened and the light bulb inside turns on. Otherwise, yup, sends a reminder once an hour when home, or 15 minutes after arriving home.

I just use SMS text because it works with other household members who don't want to have HA installed, but I can still detect their home/away based on phone MAC address on the network.

2

u/brinkre 13h ago

You could also use a contact sensor to check if it was emptied already. Check here for more ideas

2

u/Cmdr_Toucon 11h ago

Vibration sensor has worked great for me. Triple notification - message to HA app, voice announcement on the speakers, and an LED strip over the kitchen cabinets that is used for a number of notifications.

1

u/deusextv 4h ago

What LED strip you use for the notifications?

2

u/J0k350nm3 10h ago

I use an ESP32 with a KY037 sound sensor. It’s triggered when the room’s noise goes above 39db for over 10 minutes, waits for the noise to drop below 39db for at least one minute, then sends an alert.

1

u/Stuart518 13h ago

I use Amazon Alexa to announce that the dryer had finished

1

u/IPThereforeIAm 11h ago

We light up above our cabinets in the hallway outside the laundry room—red for wash is done, green for dryer is done. Anyone who walks by sees it and moves the laundry over. Works really well!

1

u/Hitlers_Hairy_Anus 11h ago

We use smart bulbs. One laundry room bulb lights red when washer is complete, another lights blue for the dryer.

Door sensors reset the light when the corresponding washer/dryer door is opened.

1

u/Halo_Chief117 10h ago

How about this? I’ve seen a YouTube video by Shane Wheatley where he shows he uses these for notifications based on the light color.

1

u/Curious_Party_4683 9h ago

a vibration sensor sends stat every time it detects vibration. in your case, it will chew through batteries in no time.

if you dont need super accuracy, a door sensor will do as seen here https://www.youtube.com/watch?v=x-jIsDXlAeQ

otherwise, an energy monitor plug will do just as well

1

u/very-jaded 9h ago

For energy monitoring I recommend an "appliance module" instead of an ordinary switch plug. Appliance modules are built for a continuous heavy draw. A switch plug isn't designed for long term heavy current draw and will burn out prematurely.

Source: my fridge and a cheap smart plug after about 2 years.

1

u/deusextv 4h ago

It depends where OP is located, in my case I needed a 220v energy monitor and couldn’t find any on Amazon, so I went the vibration sensors route and made sure to add proper coding/automation so it doesn’t falsely trigger when my laundry is doing a different cycle

1

u/deusextv 4h ago

It depends, if the vibration sensors is attached to a esp32 you can automate it to wait until 5 mins after las vibration to actually send the notification, that’s how I set it up, I don’t have the light but I get phone + Alexa notifications

1

u/OccupyElsewhere 9h ago edited 3h ago

I coiled a 1m rope light in an existing lamp. Different colors indicate status of different things. The white lamp works still as a regular lamp. Here the blue is telling me to put my industrial bin out. *

2

u/Tricamtech 3h ago

šŸ™ šŸ™ šŸ™ you’ve saved me from another project I didn’t have time for!

1

u/sblessley 8h ago

funny, half the responses were suggesting other ways to evidence the dryer finished, the rest addressed your question. I’d 2nd or 3rd the Third Reality nightlight/pir with LED, I think either sonoff or Shelly makes a similar one also. kind of expensive compared with a smart bulb though.

1

u/deusextv 4h ago

I recently got myself a esp32 and vibration sensors, (first full diy project), I have a tower (washer + dryer) so I set an automation that tells me 5 minutes after it ends, and works perfectly, I get a phone notification and also my Alexas let us know that the laundry is done, you could add a LED to it as well

1

u/davidgrayPhotography 4h ago

I've got a Divoom Pixoo 64. It's got an API I can call in order to send animated GIFs to it, so I use that when the washer and dryer are done.

The Pixoo 64 isn't cheap, but I use it for a few notification types (e.g. as a bin indicator to remind me which bin goes out that night) and it's fun to rotate through some nice GIFs

1

u/MaRmARk0 3h ago

Vibration sensors were not working for me as I got lot of false alarms. Like a lot. Final thing which works is Ikea smart outlet behind washing machine and some blueprint from HA forums. It measures energy and sends notifications to phones and also says it via Nest speaker.

1

u/Unattributable1 40m ago

I have my gas dryer and washing machine monitored for power usage with a TP-Link Kasa power strip. When it detects the dryer drops to zero power after 15 minutes, and when she is home, it simply texts here that the dryer (or washer) is done.

If she is not home and a cycle completes it then waits until she is detected home for 15 minutes and then texts her.

Same with a single TP-Link Kasa plug on the dishwasher.