Is there a device that...? (Need to monitor a gas stove.)

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101

Nice work!

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102

Now that you've proven it works, maybe hack those sensors for external power and throw a power brick in there somewhere????

S

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103

I see you have your oven elsewhere - I'm worried about what the heat from ours would do with such a setup. The knobs get fairly warm.

Very nice setup though!!!

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104

I have a stovetop that is separate from the oven, so no where near the room you have to work with, but this has given me so good ideas to go from.

Thanks!

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105

Very cool!

One small suggestion, you might want to use something other than plumber's putty. It isn't a great adhesive and tends to dry out over time (especially around heat).

100% WAF is a significant achievement and you want to keep it at that level for as long as humanly possible. If one of those magnets falls off at an inopportune time...

J-B Weld is your friend here.

Oh, and if you considering announcements, "Honey you're going to burn dinner again" should probably not be one of them.

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106

Thanks very much for the tip about the plumber's putty. To give you an idea of my level of expertise, I thought that was a perfect choice. :scream::wink:

I've already ordered a patch that says 100% WAF! and will wear it proudly on my hat. :sunglasses:

And regarding the announcement, be careful or I'll show what you wrote there to my wife. :slightly_smiling_face:

107

Hopefully you can find an approach that works for your situation and lay out of your stuff. I got really lucky, I had opened the cooktop up a few times to replace some of the spark systems stuff, so I remembered there was some room, but I was happily surprised to see how wonderfully open it was. I could have fit pretty much anything in there.

Good luck!

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108

I was thinking the exact same thing, I'd really like the power these contact senses without having to open it up again. I don't know if you saw it in the pictures but there's actually a plug on the left hand front end of the top, So that seems like obvious point at which to steal some power.

However my knowledge of electricity is extremely limited. As in I think it's made by magical elves. So there is a slight risk that I might end up electrocuting myself. :wink:

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109

One way to find out If it will work. Sacrifice a contact sensor for the good of science. :slight_smile: I'm actually pretty excited about setting up some automations for this. I'm thinking about a motion sensor up inside the hood, so I can set some rules up for if no motion at the stove for x minutes and the burners are on...

Should be fun.

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110

Having left burners on myself you are on to something! Will have to think about it a little.. :thinking:

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111

This is nicely done! For this type of stove this is a good design. I have a italian cooktop with the knobs mounted on top and to the right. There his a good 4mm gap between the knobs and the metal base, and the knobs are solid. But I'm thinking of changing stove top the type you have so maybe I'll just wait for a bit and copy you.

I would setup the "things quited down" automation via a motion sensor for the kitchen as the way I would track if I forgot the burner. Maybe a virtual switch for an Alexa routine "Alexa start simmer" that when set functions to doubles the timeout in the warning automation.

If no motion by the stove fora 20 minutes and then a warning if no motion and maybe 40 minutes if the virtual switch is set to indicate simmer. Cancel the virtual switch when all burners on the stove are set to off so it returns to non-simmer mode

Neat stuff!

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Thanks! Yeah, I really did get lucky w/my stove configuration, suited my desired solution perfectly.

Decided I'm going to start w/a motion sensor on the kickboard on the island cabinets across from the stove. That will sense us walking around in that area and reduce false readings as it will be pointing away from the family room end of the room. I think I prefer to not use a sensor in the hood, as it might react to steam, and I'm concerned about it getting gummed up w/oil and particulates coming from our cooking, making it less sensitive/accurate.

Still thinking about visual notifications...want something that is noticeable, but not too obtrusive as we frequently make stocks and stews, and other dishes that may need to simmer for quite a while, and don't want the "burner on" lighting to become annoying. A fine line between safety and my wife saying "That is really annoying..." :wink:

113

Put a table lamp somewhere where you usually are and make it blink a couple of times? I prefer voice but yeah, that can get annoying. But then again getting my outdoor alexa to tell me I forgot something on the stove when I'm outside seems like a great idea.
I like the virtual switch method for telling the automation that I anticipate a long cook on the stove.

I agree with you, sensor in the hood is not a good idea. I find that putting the small lowes motion sensors on top of door frames makes them invisible. I have one on top of a frame that is pointing directly at the stove and away from the dining area. I use it as a temp sensor and as a sensor for hsm but it would be a good use for your use case.

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Just FYI, I just happen to work on a device that is powered from heat source.

I personally put temperature sensor above our stove.

I am looking for a way to come up with a better solution. Here is where I am today.

Let me know if you have any suggestion or request. It is a start for me. I can still adjust and make changes based on your input to my project.

Thanks
Iman

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116

Updated the thread title slightly to make it easier to find, since there were a lot of good/interesting ideas and approaches suggested.

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117

What temperature sensor did you use in your stove?

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On the demo, I am using MCU temperature like most Zigbee sensor that give "free" temperature reading.

I have also used MAX31866 and MAX31856. They are thermocouple and pt100 rtd sensors. I am aware that with this hooked, It can double up as thermometer for your food. But, I am worry it can get too messy for gas stove. I am going to attached wither one for my Smoker to measure the internal temperature of my smoker.

If I can make it as small beacon, I am hopping that it can be tucked in some free area of the stove. The stove will send beacons when it is used.

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119

nicely done,

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120

Taking @Stephan.J's idea further, you should be able to use something like this: https://amzn.to/2MvfzBR
These are small thermocouples for propane grills, fairly low profile, you will need to figure out a way to attach them near the stove top. You can connect them to nodemcu or wemos board https://amzn.to/3b2t7ik - you may have to modify the code a little to work with it. @ogiewon may be able to give more guidance, ST_Anything with with nodemcu/wemos can literally solve any problem :slight_smile: - well almost.

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The elegant (and only) solution, in my house and according to my wife, is the solution you don't see at all. So thermocouples are not going to happen in our home. To quote the queen:

"OK, but only if the stove looks exactly the same when you're done."

So it shall be written, so it shall be done.

:wink:

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