Auto shutoff stove

Karen, my neighbor across the street had one of these installed on his propane fire pit. It works great!

You might see if any of the “Butane refill  fail” thread folks would test it out or maybe David would since he has 13 acres of outdoor lab space.  With brass fittings, hoses, regulators and adapters it might come in at 7 pounds but might just work, or not, but at least the explosion would be far away from your backyard.      If it does work, there just be a BLP MYOB Gear Award in this!  ;-)

I really like the idea of a whistling teapot out in the woods, though.

“I really like the idea of a whistling teapot out in the woods, though”.

I could not find a lightweight whistling kettle ( some are described as such but only in the name of the product not listed in the features…) but it should not be all that difficult to make a whistle for one of the existing light aluminium or titanium types.

The whistle is described like this

“A basic kettle whistle consists of two plates, positioned close together, forming a cavity. Both plates have a hole in the middle, which allows steam to pass through.”

https://www.dailymail.co.uk/sciencetech/article-2473371/Scientists-finally-unravel-mystery-kettles-whistle.html

I thought that the Trangia kettle whistled but looking online it appears not, although maybe they did in the dim dark past

A basic kettle whistle consists of two plates …
This has real possibilities. A small ‘top hat’ stuck to the lid of the pot with silicone adhesive (which will take the temperature). Very low mass.

Cheers

My Trangia kettle must be 30 years old – and no whistle.

Cheers

A whistling kettle would be cheaper, lighter, and easier to implement.

If you wanted gas to shut off the stove to save fuel weight I think it is hopeless task.  How many grams would you save per boil?  How many boils would need to save the weight of the device so someone would consider it worthwhile?  If you want to shut off the fuel as a safety feature, then it might be doable… though still pretty complex.

I would suggest using the check valve on the fuel canister as your control valve.  Your stove has a pin that comes down to open that up.  Put a fitting between your stove and the canister with its own pin.  That new pin has a mechanism that allows it to release.  That mechanism would be connected to a thermal sensitive spring loaded device by a bicycle cable.  The cable would allow you to route the thermal sensitive device up to your pot of water, where it would sit submerged in the water.  When the water gets to the correct temperature, the spring pops, which in turn pulls (or pushes) the bicycle cable, which would then activate the mechanism in the fitting that then releases the push pin and the canister seals itself up.

Certainly just a conceptual design at this point.. I’m not sure anyone else can see the picture in my brain :)

What would the mechanism look like?  I guess a sliding shim with a hole in it.  In the “normal” position the hole is retracted.  The pin pushes up against the shim and stops moving (allowing it to push open the check valve on the fuel canister).  When the mechanism is activated, the shim slides over allowing the pin to pop up through the hole.  The spring in the check valve pushes the pin up and the canister closes.

or a turbine that is powered by the escaping steam.  Gear reduce the turbine drive to rotate the inlet ports to the stove.

I know you are joking, but the problem with steam is that you need to build up pressure to do any work.  That means you need a pressure containment device (a pressure cooker).  Not to many people use them backpacking because they have to be heavier duty to handle even slight rises in pressure.  If you wanted to go down that route, you could use one of those old school remote camera switches (the ones with the bulb and a long hose that screws into the shutter release on old cameras.)  Run that from a port on your pressure cooker to the mechanism I described above and voila!!!  Pressure goes up… the other end slides the shim and the stove turns off.  Of course if the mechanism hangs up, you have a bomb.

City of Angels background music. I made the kettle back in 2010

Sent a bottle to “stumpjumper” and he used a kettle whistle he had on hand.

My thought is to hit the thrift store, find a whistling kettle and mount the whistle on top of a Trangia teapot lid and put a cork in the pour spout. We’ll see how easy this can get. I did see that Kelly Kettle now has whistlers for all three sizes of their Kettles.

Dan, yours sounds just like the horn on my ’67 Buick LaSabre… wow!

My sincere apologies for the Thread-Drift.

That means you need a pressure containment device (a pressure cooker).
Stick a rock on the lid.
(Just for safety, this assumes you are there to hear the whistle and turn the stove off!)

Cheers

slide valve remote shutoff

Blue Tooth temperature sensor on lid of pot sends signal to Wireless Robotic Button Pusher which then activates spring release attached to slide valve on alcohol stove.

Video of Button Pusher:

Both heat sensor and button pusher need to be paired to one another.

Roger….make it work with a canister valve that you will someday design. 

You geeks know this will work.

Not good enough.
It also needs to make the coffee.

Cheers

Dan,

Apart from the fact that you would need to build a cradle to hold the unit attached to the stove and that the heat from the stove could damage it, there are another couple of small obstacles  to overcome.

1. the unit is not available (some problems with the product)
2. it isn’t an auto switch off system.

Details, details …

This item is currently unavailable because customers have told us there may be something wrong with our inventory of the item, the way we are shipping it, or the way it’s described here. (Thanks for the tip!)
We’re working to fix the problem as quickly as possible.

From Amazon.
Oh well … as someone once said (back in the 70s):
We don’t have any product yet, but we are shipping marketing materials in bulk.

Cheers

I thought yousa guys were geeks 

gee whiz, tsk tsk,

Press buttons and switches remotely and manually
Works with rocker switches, protruding push buttons, non-protruding push buttons, toggle switches, tactile buttons, capacitive buttons (smartphones)
Press and hold buttons for any number of seconds
Compatible with iOS / Android / Prota OS
Create Smart Home connected devices with your old appliances by adding a MicroBot on it (oven, kettle, switch, power outlet, ac/fan)
Comes with: 3 height adjustment plates, 3 adhesive tapes, 1 micro-USB/USB converter and 2 plate fillers

in stock
https://www.robotshop.com/en/microbot-push-wireless-robotic-button-pusher-2nd-generation-platinum-white.html

home depot

https://www.homedepot.com/p/Microbot-Push-Wireless-Robotic-Button-and-Switch-Pusher-MRB-100/306132645

The nitty gritty internal components.

https://novemberfive.co/blog/hardware-teardown-naran-microbot-push

The OP wants one of these(auto shut off stove) in a bad way. It’s up to the supposed engineers/geeks to make one for her.

The OP wants one of these(auto shut off stove) in a bad way. It’s up to the supposed engineers/geeks to make one for her.

However, a really competent engineer will first look at the overall problem to see whether it really needs solving, or whether all we have is a profit-making attempt to exploit a consumer’s gullibility.

Does the world really need to exploit that many resources so the customer can use his smartphone instead of putting his finger on the button? Bah, Humbug.

Cheers

You’re funny Roger 

Hi Dan

Funny Ha-ha, or funny peculiar?
I have been called both, among other things …

Cheers

My wife is going blind, the other day she called me a taxi.

As I been repeating like a broken record for the last 10 years, when a product is 90% ready the other 10% will take at least 90% of the time and resources to make it work (or just give up…)

Anyone can come up with the “this will work IF…” kind of solution.

I think we should have a contest to see how many wireless connectivity devices one can functionally employ in camp.

If you don’t use your phone to turn on your head lamp, you’re disqualified.

There have been worse topics for spring fever. This one is great!

you could have a wireless thermometer that connects to smartphone : )

Dan,

Apart from the fact that you would need to build a cradle to hold the unit attached to the stove and that the heat from the stove could damage it, there are another couple of small obstacles  to overcome.

1. the unit is not available (some problems with the product)

2. it isn’t an auto switch off system.

The product is available.

Attach the bluetooth plunger to the stainless steel shutter release cable which will release spring loaded slide valve when boiling water is sensed by bluetooth thermometer attached to lid of pot.

Water proof bluetooth plunger lays on ground outside of windscreen that surrounds burner/pot. No melting of plunger. You new that @jamesdmarco but just forgot. I agree with your wife….you look like a taxi

https://www.ebay.com/itm/Shutter-release-cable-8-inch-Stainless-Steel/382862327599?hash=item59245f7f2f:g:N1sAAOSwXUhcfVLN

All yours, Dan! I still forget my pants in the morning, sometimes…