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Displaying My Washing Machine's Remaining Time with Curl, Jq, and Pizauth

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Re: Displaying My Washing Machine's Remaining Time with Curl, Jq, and Pizauth

#71

Post by rsynnott »

hoseja wrote: post #41
mauvehaus wrote: post #17

Earlier quoted context omitted.

We bought a house, and the laundry machines did not convey with it. Feeling a bit tighter than usual, we bought a pair of older ones for $75 a piece from a local outfit that sells reused/unused building supplies. Having endured precisely the phenomenon you're describing for the last decade, having a washer that reliably gets the job done in 45 minutes or less is pure bliss. Yeah, it uses more water, but we're on a we…

Using more water is a feature IMO. I want clean clothes. I don't care insane people decided to live ten million a city without enough water to use, there is more than enough where I live. Why should I be uselessly frugal with abundant resources and suffer as a result.

Using a lot of water doesn't really correlate with clean clothes. Actually, it may slightly negatively correlate; the biggest water users are old-style top loaders, and per Which, Consumer Reports et al, those are pretty consistently worse at actually _cleaning_ than either modern front load machines or modern high-efficiency top-loaders.

Re: Displaying My Washing Machine's Remaining Time with Curl, Jq, and Pizauth

#72

Post by unwind »

actionfromafar wrote: post #36
nonethewiser wrote: post #34

Earlier quoted context omitted.

I’d pay more for NO firmware in my washing machine. This is beyond my desire to just keep things simple. What is the point of washing machine you can control remotely? You have to put clothes in at the start and take them out at the end. It offers no convenience.

The only thing I could agree with is if it started at at time when the spot-price of electricity was low.

But how would that work in practice?

You load the machine say in the afternoon/evening after work etc, and then it decides based on historical data that 02:35 is the local minima and starts. You run the quick 1-hour program because it's Good Enough(tm), then the laundry lies wet in the machine from 03:45 until you wake up around 06:00 to start your day hanging it? In my experience, but perhaps this is just local circumstance (climate etc) you can't leave damp laundry in the machine for hours on end, it will get smelly and need to be re-washed.

Also, not being able to plan when you deal with the wet laundry because of the power price hunting feature sounds super annoying and stressful. Perhaps there's an assumption that after the laundry it will also tumble dry; we rarely do that due to it being bad for the clothes and costly in energy etc.

Re: Displaying My Washing Machine's Remaining Time with Curl, Jq, and Pizauth

#73

Post by [deleted] »

nonethewiser wrote: post #34
belugacat wrote: post #6

Great hack, but I’m sure any engineer worth their salt winces at the thought of a machine in their home roundtripping through far away 3rd party servers (I guess they’re the manufacturer’s, but if it’s hardware I own in my house those servers are 3rd party to me) just to notify them of a numerical value when they’re sitting literally 10 meters away (I live in the countryside and experience internet interruptions not…

I’d pay more for NO firmware in my washing machine. This is beyond my desire to just keep things simple. What is the point of washing machine you can control remotely? You have to put clothes in at the start and take them out at the end. It offers no convenience.

[deleted]

Re: Displaying My Washing Machine's Remaining Time with Curl, Jq, and Pizauth

#74

Post by avianlyric »

londons_explore wrote: post #5

It is notable that washing machines lie about remaining time. Specifically, there are parts of the wash cycle that are indeterminate. How long will it take to get all the clothes wet with water - well that will depend on the water pressure and how many clothes are inside. How long will it take for the water to heat - Well that will depend on how hot it was when it came in and the grid AC voltage variation. How long w…

I have done something similar to OP with my Miele washer. Once you start a cycle it begin filling the drum, and analysing how much water your clothes absorb, at which point it re-estimates the wash duration based on the measured load size.

Based on the stats I’ve collected, once it done that re-estimate (which is usually reducing the cycle length slightly), the new duration will be spot on nine times out of ten. Occasionally it take longer than normal to balance the drum for the spin cycle, and I can see the machine adjusting it wash duration in my stats.

I’ve also noticed the Miele machine seems I incorporate info from previous wash cycles. So the initial estimate it provides before you hit start, will slowly adjust to match wash duration of your typical load. As a consequence, if the machine says it gonna be done in 1:40, it’s pretty much guaranteed to be done in 1:40, and probably completed in 1:20-1:30. So more than accurate enough to plan around.

Re: Displaying My Washing Machine's Remaining Time with Curl, Jq, and Pizauth

#75

Post by BeefWellington »

unwind wrote: post #72
actionfromafar wrote: post #36

Earlier quoted context omitted.

The only thing I could agree with is if it started at at time when the spot-price of electricity was low.

But how would that work in practice? You load the machine say in the afternoon/evening after work etc, and then it decides based on historical data that 02:35 is the local minima and starts. You run the quick 1-hour program because it's Good Enough(tm), then the laundry lies wet in the machine from 03:45 until you wake up around 06:00 to start your day hanging it? In my experience, but perhaps this is just local circ…

I've often wondered why no new manufacturer has appeared with a stacked system that can wash clothes in a top washer and then dump them into a bottom dryer, or even an all-in-one frontloader.

Re: Displaying My Washing Machine's Remaining Time with Curl, Jq, and Pizauth

#76

Post by vegardx »

unwind wrote: post #72
actionfromafar wrote: post #36

Earlier quoted context omitted.

The only thing I could agree with is if it started at at time when the spot-price of electricity was low.

But how would that work in practice? You load the machine say in the afternoon/evening after work etc, and then it decides based on historical data that 02:35 is the local minima and starts. You run the quick 1-hour program because it's Good Enough(tm), then the laundry lies wet in the machine from 03:45 until you wake up around 06:00 to start your day hanging it? In my experience, but perhaps this is just local circ…

In Europe spot prices are announced 24 hours in advance so it's actually very easy to this. It's super handy for things like battery-electric vehicles or central heating. For the latter you also take in the weather forecast into your model, and voila, lower power usage, better comfort. For BEV you can easily set plans to charge it even more than usual to take advantage of unusual drops.

My washer and heat-pump dryer don't really use that much electricity. They've become super efficient. There are better and lower hanging fruits than such appliances these days.

Re: Displaying My Washing Machine's Remaining Time with Curl, Jq, and Pizauth

#77

Post by vegardx »

BeefWellington wrote: post #75
unwind wrote: post #72

Earlier quoted context omitted.

But how would that work in practice? You load the machine say in the afternoon/evening after work etc, and then it decides based on historical data that 02:35 is the local minima and starts. You run the quick 1-hour program because it's Good Enough(tm), then the laundry lies wet in the machine from 03:45 until you wake up around 06:00 to start your day hanging it? In my experience, but perhaps this is just local circ…

I've often wondered why no new manufacturer has appeared with a stacked system that can wash clothes in a top washer and then dump them into a bottom dryer, or even an all-in-one frontloader.

Front-loaded machines with both a washer and heat-pump dryer exists. I've had one for many years. It's quite handy if you have light loads, but I much prefer having a stack of separate washer and dryer, even though it means I have to manually move them from one to the other.

Re: Displaying My Washing Machine's Remaining Time with Curl, Jq, and Pizauth

#78

Post by NickNameNick »

BeefWellington wrote: post #75
unwind wrote: post #72

Earlier quoted context omitted.

But how would that work in practice? You load the machine say in the afternoon/evening after work etc, and then it decides based on historical data that 02:35 is the local minima and starts. You run the quick 1-hour program because it's Good Enough(tm), then the laundry lies wet in the machine from 03:45 until you wake up around 06:00 to start your day hanging it? In my experience, but perhaps this is just local circ…

I've often wondered why no new manufacturer has appeared with a stacked system that can wash clothes in a top washer and then dump them into a bottom dryer, or even an all-in-one frontloader.

Combo washer/driers exist. They typically have less capacity than stand-alone units.

Re: Displaying My Washing Machine's Remaining Time with Curl, Jq, and Pizauth

#79

Post by pwg »

dicknuckle wrote: post #60
Dead_Lemon wrote: post #57

Earlier quoted context omitted.

A mechanical controlled washing machine with a mechanical timer on the plug would, reliably, achieve the same thing. no need for networks and external servers. A timed controlled smart plug, with current monitoring, would be able to achieve the IOT aspect of the problem.

It would need to be a very specific kind of washing machine (that hopefully probably exists) to make your idea work. A fully analog/mechanical washing machine is just a big mechanical timer controlled relay behind the knob like a toaster oven. If you set it without power, it just runs through the timer without doing anything. The machine would need to have a timer mechanism that is turned by an electric clock motor,…

>The machine would need to have a timer mechanism that is turned by an electric clock motor,

Pure mechanical timer based washing machines have been driven by electric clock motors (line powered) for at least 50 years (as that is as far back as I remember knowing how they worked). So if line power is out, the timer does not run.

Of course, the delay timer on the line would need enough power handling capacity to carry the load of the washing machine.

Re: Displaying My Washing Machine's Remaining Time with Curl, Jq, and Pizauth

#80

Post by hcaz »

matthew-wegner wrote: post #32

I use a zigbee smart outlet with power monitoring for this. If it's using power for awhile, set to washing. If power has been zero for awhile, and it's washing, set to done (and send text-to-speech event that goes out on all house speakers). This is a little Node-RED flow on top of Home Assistant.

This is a clever way to make non smart appliances smart, it works for washers, dryers, dishwashers etc. You could even use this to detect when a dehumidifier fills its tank and stops itself.
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