[laurencei]

I did something with my Bosch washing machine (not like the OP). My washing machine is at the other end of the house from my home office. Sometimes I would put a load of washing on, and despite setting an alarm, might forget (perhaps I am in an important meeting etc).

So I decided to solve it.

Using the Bosch API - I can tell both when a cycle is complete, and if the door is open. Currently I use their default version, but there is a local hosted option I'll be switching too now the proof of concept works.

So using Home Assistant I have a simple script that detects when a washing machine cycle is complete AND the door has NOT been opened. This implies my washing machine has wet clothes still in it.

So Home Assistant will alert my phone (and my wife only if she is home based upon presence detection) once every 15mins that there are wet clothes waiting in the washing machine.

Very simple - works perfectly.

[MarioMan]

My washing machine is a "dumb" machine from the '90s. The wash cycles run based on the position of a glorified timer knob: it doesn't have a computer or sensors to detect if it needs extra time aside from the water fill stages. Thanks to this consistency, I just set a 40 minute timer on my phone, and it's always done by then. Can't get much simpler than that. If I need reminders, there's always the alarm snooze function.

[cdr]

It's actually really, really easy to get the state of a "dumb" washing machine (or any other electric machine) into Home Assistant using a smart plug. You can use something really basic like "power draw for > n seconds followed by no power for > m seconds" to detect when a cycle is finished. You can get way fancier and look at power draw curves to determine what part of a cycle it's in, or which cycle, if you really want to. You can add a door sensor (recommend Samsung) if you want to know if the door's been opened.

Unfortunately it's much harder to do the same for an electric dryer, since there's no inexpensive or good smart plugs for 240V last I checked.

[throwup238]

For the dryer think even simpler: get a Esp32 with a SW-420 vibration sensor, stick it on top of the machine somewhere, and look for vibrations. Since most dryers don’t have cycles, it’s really easy to detect if they’re running or not. There’s even a potentiometer on the SW-420 so you can adjust the sensitivity without reprogramming the ESP32.

[3D30497420]

This is (largely) what I have for my "dumb" washer. What makes mine unique is the washer is in my apartment building's cellar, too far for Wifi. So I have a LoRa transmitter that routes the message to a LoRa receiver on my home network.

Unfortunately, as you noted, I haven't figured out how to handle the dryer as the load is too much for all the smart plugs I've found. I wish there was a clamp-style monitor on an extension cord, but it seems that is something which doesn't exist.

Thankfully, the dryer isn't as much of an issue since dry clothes can sit there until I remember to get them.

[FredPret]

I wonder if it would be practical to McGyver a solution into place by coiling some wire around / next to the dryer's power cable - to detect flowing current - and connecting the coil to an Arduino / Raspberry Pi

[3D30497420]

Maybe? I'm not super great with electrical work.

My understanding is that detecting an electrical current through a power cord typically doesn't work when measuring all the wires together, because the current in the live wire is canceled out by the return current in the neutral wire. This is why clamp-style meters are usually put at the electrical panel, where individual wires are accessible. Since I live in an apartment, that isn't an option for me.

[FredPret]

Seems like it's not really a great plan, but could maybe be made to work:

https://electronics.stackexchange.com/questions/634852/exter...

It's also possible that your machine lets off some elecromagnetic noise you can detect directly.

The other thing you could try is put some sort of a microphone / vibration on it, then train a small NN on the waveform to distinguish between the washer and dryer.

[Siecje]

You can use a vibration sensor for the dryer.

[3D30497420]

I considered that, but the washer and dryer are stacked (limited space) so the vibrations of the washer would be picked up in a dryer vibration sensor.

[wolrah]

Is that really a problem though? If you're washing another load at the same time as the dryer is running, wouldn't you generally want to wait until both are done anyways so you can swap the wash to the dryer after getting the dry load out?

Also at least in my experience the dryer takes longer to run than the washer, so if I've just rotated a previous load and started both at the same time I'm always waiting on the dryer to be able to do the next one.

[cdr]

I tried that, and found dryers actually vibrate so little that most sensors have a hard time reliably detecting it.

[connicpu]

You might be able to set something up using a current clamp connected to an esp32, though it might have to go over a point where the wires are separated so possibly inside the machine. Might not be too hard depending on how you feel about opening up your dryer.

[janfoeh]

I know nothing about US 240V power circuits — what plugs do you use, could you get by with a Euro system?

I use Eve Energy smart plugs, which seems to be supported in Home Assistant through the matter integration. Local first, no bullshit remote account requirements, good quality, around 40€ / USD 45.

https://www.evehome.com/en/eve-energy

[jnovacho]

I believe that US 240V is 2 hots, neutral, and ground. EU 240V is one hot, one neutral and ground. EU 400V (380V) is 3 hots, neutral and ground.

None of this is cross-compatible.

[MisterTea]

> I believe that US 240V is 2 hots, neutral, and ground.

Correct. Its called split phase, a 240V transformer is center tapped and that tap is grounded to create the neutral. Either end of the transformer to neutral is 120v and end to end is 240V.

> EU 400V (380V) is 3 hots, neutral and ground.

Three phase 230/400: 400V is line (hot) to line with 230V line to neutral. More for industrial use but I hear some homes can have this service for whatever reason.

> None of this is cross-compatible.

Not really. A 230/400 volt system also supplies 230v single phase. A 230 volt European device will work fine on 240V split phase unless it has a motor which will run faster on 60 Hz which could overload it. Though I have a machine with a three phase 380 volt 50 Hz motor running happily on 230/400 60 Hz from an autotransformer supplied by 120/208 60 Hz. Just runs 20% faster.

[orangewindies]

> > EU 400V (380V) is 3 hots, neutral and ground.

> Three phase 230/400: 400V is line (hot) to line with 230V line to neutral. More for industrial use but I hear some homes can have this service for whatever reason.

It varies from country to country in Europe. In the UK you'll almost never find 3-phase in a home, in Sweden even apartments usually have 3-phase supply. In my Swedish apartment the only thing connected to more than one phase is the induction hob.

[janfoeh]

Pity - thank you!

[ThatMedicIsASpy]

Or just pay 10€ for an ikea plug (INSPELNING). I do not understand people always paying a x10 premium for eve.

[specialist]

How about using sound?

Extra credit for discerning washer vs dryer, recognizing "done" buzzer/bell, etc. Might be useful if your dryer has a "wrinkle guard" feature; buzz and then keep tumbling on low heat.

For the washer, you could probably also discern portion of the cycle (fill, agitate, spin, drain).

[mike-cardwell]

I do this for my washing machine, drier, dishwasher and also 3D printer, in the UK. Have some Z-Wave Greenwave PowerNodes, hooked into Home Assistant. Works great. I also have Alexa hooked into Home Assistant so I was able to make it announce through our Echo Dot when a cycle for any of those devices completes.

[stronglikedan]

I use an AI agent running on an old Android phone to monitor the position of the switch with the camera and let me know when it's straight up and down or side to side, since those are the four off positions of my knob. (kidding but maybe not by this weekend)

[stereo]

What’s the actual amperage of your dryer? A Sonoff Pow can take 20A. Add a fuse or breaker.

[dzhiurgis]

CT clamp could work, but dunno if there are inexpensive ones.

[Siecje]

You can use a vibration sensor on the dryer.

[sgt]

Keep that dumb washing machine from the 90s, I can almost guarantee you that a new washing machine is not meant to last as long. Maybe 6-7 years if you are lucky.

[elygre]

So, maybe. And also maybe not.

https://www.forskning.no/forbruk-ntnu-partner/er-vaskemaskin... (in Norwegian) quotes research from the Norwegian University of Science and Technology.

The article says that a washing machine used to last 20 years, and now only lasts 10 years. However, it also says that machine usage has doubled, from four to eight times a week. So, the new machine lasts the same number of cycles, but the number of cycles is reached much faster.

[MisterTea]

An article from 2025 is pulling data from a 2003 study that compares usage from the 1960's to what I assume is 2003, right when He and CPU controls were starting to become popular.

My 1990's Whirlpool lasted for 25 years before a barrel support rusted out. It had a mechanical timer and did a good job cleaning my clothes. Now I have this awful HE LG thing that I ALWAYS use the bedding mode otherwise it just mashes the shit out of everything destroying my clothes. HE feels like a conspiracy by big clothing to sell you more clothes, destroying the environment while fooling you into thinking you're saving it by conserving water.

[hvb2]

There's an easy fix for that, put your clothes in these 'washing bags' that was always good to prevent wear but sounds like that might be what you need

[gotoeleven]

I solve this problem by only wearing burlap sacks.

[dzhiurgis]

Mashing the shit out of it is what actually washes your clothing without high temperature and minimal amount of detergent. I can't stand top loader washers that are ubiquitous here in NZ - they are so useless.

[MarioMan]

We’ve had a few scares. Last year, it didn’t stop filling and caused some flooding across a few rooms before we caught it. Earlier this year, the plastic on the knob mount was so brittle it snapped off. We’ve been servicing it, and we’ll keep it going as long as we can.

[jacquesm]

Miele.

[cobbaut]

Miele from my grandmother still running here, 1988 machine! No defects, still pristine inside. No guarantee though that today's Miele is the same quality.

[jacquesm]

They are. Bought a washing machine more than a decade ago, still going strong, and a dishwasher more recently and it was every bit as solid as the rest.

[drewg123]

I miss old machines. My wife’s Bosch takes 90min to 2.5 hours for most cycles. Tho there is a 30 minute super quick cycle

[jalk]

But the fast cycles of olden day cames at a price in terms of power draw and water usage, so it’s unfortunately similar to missing incandescent light bulbs.

[chrismcb]

That works great if you are the one turning the machine on. But not is someone the turns it on

[ashoeafoot]

Checked my privileg.. still humming

[zahlman]

... Do they not still make these?

[SecretDreams]

I occasionally do a washing load before bed that I know I might not wake up for to put into the dryer. Fortunately, my machine has an "extended tumble" cycle of sorts that will keep the clothes fresh all night at the expense of a bit more water, but while saving my bedtime routine. We end up with a lot of these nighttime loads because we're toasted all day watching kids and we prioritize laundry off-peak electricity hours. Love my Electrolux, but I imagine many brands have a comparable feature.

[Rolcol]

I use the Delay feature. It will wait to start the wash for a settable amount of hours.

[SecretDreams]

Ooooh, I need to see if I have this one! There's a companion app, but I've opted not to set it up yet. Don't really need my appliances in wifi.

[ajb]

The equivalent on mine (a Bosch) is to wait to start anything at all until 1 cycle-time less than ten specified number of hours. Churning all night instead seems a peculiar design choice.

[nandomrumber]

Does your machine not have a delayed start function? I’m standing in front of about 40 washing machines right now and they all appear to have this function.

Often a button labelled ‘Ending in’.

Australian market.

[dzhiurgis]

My Chinesium washer uses 0.4kWh per load. 4 cents worth of arbitrage.

[waste_monk]

I have been planning to implement something similar with my countertop oven - however having no API or other connectivity, I was planning on simply plugging it via a smart plug, and using the power draw measurements to determine whether it's idle or not (that is, arm when power draw transitions to above idle, then alert once it drops back to idle).

[05]

Yeah I tried to use the builtin sensor on my LG one but it turns out, there's no 'door open' sensor per se, only the 'locked successfully' signal. So I had to add an external Zigbee reed switch door sensor..

[KolibriFly]

That's actually a super elegant solution: simple logic, real-world impact

[systemtest]

I have a G-Shock 5600 watch that can alert me when my washing machine is finished. At the start of the cycle I take note of the total time it takes, I set that time on the timer of the watch and hit start. It will beep once the washing machine is finished. Been doing that for about 15 years now.

It works with all brands regardless of API.

[matthewmacleod]

Of course this doesn’t work with variable cycle times.

[waffleiron]

Then you'll just add 15-30 minutes, and it will still work ;)