Building a Bimetallic Tea Monitoring Mechanism
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- เผยแพร่เมื่อ 7 ก.พ. 2025
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In this video, we invent and build a completely mechanical device that monitors the temperature of a beverage and rings a bell when it's ready to drink.
This video was sponsored by Brilliant
To try everything Brilliant has to offer-free-for a full 30 days, visit brilliant.org/ChronovaEngineering/. You’ll also get 20% off an annual premium subscription.
May I have a request for some particular machine called "Langmuir's method".
For reference:10.1038/1391066b0
It appears to be a 7 day trial.
😮@@Vyv-z9n
I don't know if I'm more impressed by your ability to build/engineer or the fact that you can write straight without lined paper.
Please make a flying tourbillon 🙏🙏🙏🥰🇨🇦🏴⚓
Fantastic is all that needs to said
Great gadget to be paired with the automatic tea making machine I must say
Think @colinfurze might need one of these because no doubt he’s forgotten a lot of tea during tunnelling:D
Fürze means farts in German
The Brits are summoning each other 😂
This is an exemplification of essential Englishness.
You can mount the bell using a sort of cushion so it will have a prolongated song and not just *ding*
Nice pfp
This was going to be my exact suggestion. The ding seems to small.
I was thinking a bell on a string.
A felt washer would help but point contact would be better
like how cymbals are mounted
If Wallace and Gromit were into machining, this would be their first project!. Lovely project, masterfull cinematography, good narration👌
Closely followed by a cheese portioning and dispensing mechanism!
Looks nice, Im a clock repairman and whenever bells are mounted they are fitted with felt washers on the top and bottom where they mount. This prevents the dampening of the sound
Same thing with drum cymbals!
I hope he sees one of these comments, and goes back and adds the felt, even if we never find out. It would be so easy, and would make the bell so much more satisfying.
Also, don't screw it too tightly. Leave it some room to vibrate.
Just as a little fun fact, bi-metallic mechanisms are used basically everywhere around us. Most of the time not in the form a strip but in stamped discs that can be made to snap at a temperature with tolerances of less than one degree. Every item in your house that has a heater inside will most likely have a bi metal snap disc, as they are called, in them as safety mechanisms or every simple kettle that switches off when the water is cooking will have between 1-4 of these discs in them. It's actually quite fascinating how they work and how they are manufactured and actually how few companies there are in relation to the billions of discs used all over the world
Not only are they all around us to make tempurature based controls, but they are also found all over to make objects that do not change size in a single dimention.
Its Really important in making pendulum clocks and thats the most likely place I can imagine a person would run into it.
And thats why your grandfather clock has that weird pendulum made up of bars going up and down as the outside set expands pushing down, the middle set expands a bit more pushing up just enough to make up for the center bars expansion.
Ok I gotta confess, making a new pendulum bar for an anitique grandfather clock was just my favorite project and I get too excited to share.
@@AnonymousAnarchist2didn’t know that about the clocks. Bi-Metalls are fascinating!
One of my favorite uses for bimetallic strips is car turn indicators. They use a bimetal strip wrapped in a heating wire to open and close the circuit, which makes the light blink. The famous clicking sound you hear in the car is the sound of this mechanism.
Can't believe nobody name dropped @TechnologyConnections with this comment, nearly every other video they put out is focused on a bimetallic strip powered device.
I can't express how much I love this.
The amount of energy, time, materials and money spent on this, solely because you couldn't be bothered to use the timer function on your phone, is so out of proportion to the real-world benefit that it _has_ to be a pure labour of love. And I love that.
You cannot simply expect a man to set a timer, what if he uses different mugs and cups that will change the time it takes for the tea to cool
@@Pisolithus or the temperature in the surrounding air. It will cool much faster on a cold winter's day, he'd have to calculate the rate of cooling for every possible temperature. The amount of time the tea is steeped before letting it cool would also effect the cooling time. But with this, it will always alert him at exactly his preferred temperature.
Other TH-camrs: "We're gonna use an Arduino, Raspberry Pi, several LEDs, and a K-type thermocouple to make a tea temperature alarm."
Chronova: Steampunk Heath Robinson Device.
They're both funny, especially the fact that the former one is more mundane 😂
I interpret this as a lost Leonardo Da Vinci invention.
555 timer, 1 piezo-cap + resistor: buzzer.
1 resistor + 1 Darlington: temp sensor.
Bit of fiddling to find value of 2nd resistor for desired temp.
Or you could replace the 555 with a single transistor oscillator.
Proper English eccentricity. A superb and beautifully made piece of silliness.
The only reason I don't fall asleep by his asmr style of narration and tone of voice is because it is so doggone interesting.
This is way over-engineered, yet exactly the type of goofy mechanisms that humans love so much. Perfect. 10/10
Yes! Us humans love things like this! Tell me more about things my fellow humans enjoy.
the madman did it. he actually actually used the thermal expansion equation from physics class.
All that build up, and we only saw one demonstration of the finished product, and even then, it wasn’t a live-firing situation, but a test run with just water!
I need to see this a dozen times with real tea!
Yes, *_HUGELY_* disappointed about that.
And wot about the milk, hey!
Amazing. I had just returned to my computer after filming, my coffee was cold and this video was in my recommended videos. Maybe google does know everything lol. What an incredible gadget, thanks for showing its construction.
A deceptively simple mechanism with an exceptional amount of thought and work put into it... I love this.
...und außergewöhnlich viel Freizeit...🤔
It's like a Rube Goldberg machine. An over the top elaborately constructed and complex machine designed to accomplish a mundane task.
I absolutely love it! I enjoy fabricating myself and can understand the delight one feels when designing and constructing such a device.
One time I saw a group of engineering students who, just for grins and giggles, constructed a machine with over 20 different operations that took 50 seconds to complete.
The machine was constructed to place a stamp on an envelope. Marvelous!
Fine craftsmanship. This channel deserves more subscribers.
One of the most satisfying parts is the way the ball bearing sinks into the foam after it's rung the bell. Very nice work!
This is such a lovely piece of engineering and machining. It also demonstrates a physical phenomenon in a memorable and playful way.
The whole concept of this is superb. There’s a narrow window within which tea (or coffee) is optimal, just nestling between scorching hot and too cold. To hit that perfectly is ideal, and when it’s with such a beautiful item, that’s just perfect!
The beautiful craftsmanship, design, and camerawork for something that is frankly a ridiculously over-engineered solution well earned my subscription. More please.
This is the best thing I’ve seen on YT in a long time. I’m just starting to learn how to machine, but this transcends my ambitions to learn.
If you isolated the bell from the pillar, maybe a few pieces of soft leather, it would make a far more pleasing ring. That is a beautiful machine, with the most perfect English need for existing. Thank you for sharing your time.
This is a perfect project, it was a delight to hear the ding!
I really like your style of video production. The smooth, calming, and well balanced voicing with the relaxing background music works perfectly witb the upclose camera shots. Wonderful job. I cant believe I'm only just discovering your channel!
The skill shown in this channel is awe-inspiring and reminds me of " Clickspring " Channel and the amazing reproduction of the Antikyithera Mechanism. Lovely device just what every English table should have.
Heath Robinson would be proud and envious of you. What a brilliant video, thank you
If you turn the inside of the bell (and a small part of the outside) first and then clamp it internally to do the outside there's no problem with the bell ringing. Did this when I made an about 300 mm "ships bell" in stainless as a wedding gift to friends some years ago. Do be gentle with the pressure internally though, the bell deforms easily but the setup is very stable as long as turning is made towards the chuck..
Sweet little project!
The amazing part to me is he solved so many steps to come up with something simple. How to hold it on the cup, how to move it at the right temp, how to keep the ball from flying out so on and so on. Whats it for? To tell when the tea is the right temp. Great Video loved it.
As a side benefit, the heat-sink properties of the mechanism will help bring your tea to perfect temperature faster!
And he better not dillydally after the bell rings!
So british...
You mean briish
Terribly…
Huzzah
Wou you like a bit o' waer?
oi bruv
A very pleasant video to watch on a Saturday morning.
This is absolutely one of the coolest things I have ever seen!!!
This is great! The homemade bimetallic strip makes me wonder what you could do with a DIY bourdon tube, perhaps a large, exploded view barometer.
Love it I’m a big rube Goldberg fan so this one ticks some boxes for me. Next time you do a bellish shape like that machine in inside first then fill it with hard meltable wax the outside won’t chatter as much you just have to be careful not too get it hot when turning.
The videography and craftsmanship are just excellent, but I totally wasn't expecting an amazing maths lesson. What a treat this video was!
I am always amazed about the tools that these engineers have for every problem.
First wanted to say i really enjoyed watching the video. I love building stuff like this. That said, my chemical enginnering brain went to one thing as i was watching😅.
Was wondering if you have noticed any corrosion or metallic taste in the tea? By making a bimetallic strip and putting it in water with ions in it, you have also created a galvanic cell ... Really it the same thing as a sacrificial anode. Id have to go look up which is more noble on the galvanic series, but one of them is virtually guaranteed to corrode or disaolve. The rate may not be appreciable depending on the ion concentration and types.
I love when overengeneering does not imply using AI to replace an IF statement. This was a fascinating watch. Definitely worth suscribing for more. Thank you !
Love it! Next step is the heating device to maintain 54C if you are called away for a while!
Wow, it quite literally all comes together at the end. Bravo!
I'm absolutely intrigued watching metal machining, but especially fine machine work like this. Awesome.
In the end, first, it's beautiful. Second, it has the design of a Rube Goldberg machine. Love it.
Realy nice contraption.
I first assumed it should be a tripod or similar but the cup edge holder worked out well. I do think you could use a soft spacer on the bell to make it less rigid which will increase the amplitude of the ringing
That's crazy spending so much time making this device, I could have made an electronic version using a small microcontroller in less time. but I loved watching you make it and it looks great...
I find it most entertaining watching craftsmen at work. I loved this, thanks.
Excellent toolmaking with very fine ideas. Hats off.
I would love to have one like this. Amazing video
This is the most beautifully overbuilt piece of kit for such a nothing problem. I love it.
As always, your videos are a relaxing break from the stress of normal life
Well that is totally bonkers but you earned my subscription with a great quality and peaceful video !
I love it when I find a new channel that gets it right with no flashy gimmicks or attention grabbing nonsense !
Brilliantly eccentric, brilliantly executed. Mesmerising from beginning to end. ☕️👏👏
Wow , only a Brit would make this but also with great/quirky design and quality sir you have a new admirer and a proud Brit to see the talent that still exists in our country, brave.
It is cool that temperature sensing can be done mechanically.
I think this entire mechanism could be miniaturized other than the bell. Wind a miniaturized bimetallic strip like a clock spring, solder a heat pipe going to the mug to the inside of both the bimetallic strip coil and its thermally insulated brass case, and use rotation of the outer part of the spring to lift a detent on a sprung striker that will hit a stop and spring forward to hit the bell once. Then it has no orientation needs and can be made similar form factor, albeit larger, to a meat thermometer with a bell and striker attached.
Excellent camera work and a neat build.
Now THAT'S taking your tea seriously! What an excellent idea! Very pretty build!
Love me some restoration of precision machinery. Knowing the quality of your work it is going to be marvelous I am sure.
I almost expected Uri Tuchman to come up with something like this. A, sort of, pointless invention that still serves a unique purpose.
Very Uri Tuchman
An alternative bell ringing mechanism: a cam with a strong spring in a bistable arrangement. The cam rotates *JUST* past the point where it locks so that it's on a hair trigger. A set screw can adjust this. The bimetallic strip then only has a tiny trigger force to overcome before the spring starts to accelerate the cam and a hammer on its other side strikes the bell. No loose parts to lose, it works at any angle, and the process of priming it is simply rotating a knurled knob.
When engineering skills and art are combined, innovation thrives, and beauty is born.
I watched this video when it first came out, and just watched it all again. This toy is just SO over-engineered that it is just about perfect.
I would have done the job with an Arduino and a temperature sensor, but this way is so much better
I initially thought the bell would ring when it was getting below an enjoyable temperature. Amazing work.
Doing something to help out those in need. Bravo! You're a real inspiration.
what an awesome build! i could watch you machine all day, your channel is amazing!!
Excellent video! Your cinematography is top-notch! (And your machining skills are very good, too.)
Wonderfully fancy for a small task, love it, the day i i'll be good enough to take this out of myworkshop i'll be super happy ! Thanks for inspiration and sharing !!
A combination of Uri Tuchman and Clickspring, awesome
Quite insane and totally mesmerising! Thanks for the video.
Absolutely beautiful work as always. Thank you for the great insight and inspiration.
This is some real Wallace and Gromit style domestic innovation. I love it. More please!
I admire anyone who has an idea, and then executes it, even if it's for something silly! :D Fantastic work; I respect your skills!
I always wished I was British. There's just something about you guys' energy. Seems like you guys just have it figured out. Living and being content. Idk I can't really explain it haha
Towards the end of the machining I was thinking of all the ways I could reduce the part count and manufacturing complexity. Felt foolish when I saw how gorgeous and visually satisfying the final assembly is. Fantastic art that could only come from an improvised design, a skill I have yet to learn.
Great video as always. I feel like the ramp trigger is going to be very sensitive to subtle tilt variations on the edge of the mug, variations in table surface level, etc.. and ideally some trigger would be best to ensure consistent temperatures.
That is THE cutest drill press I have ever seen!!
Beautifully over engineered solution to a requirement..... so enjoyable thank you
I image that producing this video was at least as much work as designing and fabricating the device.
Excellent on both accounts. 👌
England thanks you for your important work, we hope you will be remembered in the New Year's Honours list.
I really love this perfectly executed mechanism for an useless purpose.
Fantastic contraption 👍. Love your videos, thank you 🙂
This is one of the most coolest things I've ever seen.
Для меня ваша работа одна из лучших на ютубе. Я сам токарь и не всегда чья-то работа за станком радует глаз. Но ваше творчество исключение.
Fabulous. Has Tim Hunkin been told of this lovely work?
Neat project! Given the ostensible purpose of submersion in a somewhat acidic liquid which is to be ingested, I do hope that the brass used is lead free, though.
such incredible craftsmanship
Nice, a channel with good music and narration. A soothing Bob Ross quality, but making happy little mechanisms and not trees. Also, the entire narrative of an intricate solution to an age-old problem of tea's gone cold.
Beautiful crafted. A more robust method could be to use a clock spiral spring to pre load an arm that is released onto a bell. A trigger from a deflecting bi metallic arm. That was the cup does not have to be perfectly flat and the sound greater with more potential energy available.
I enjoy watching people construct items with tools that I would only imagine to have.
"When an object is useless, it becomes indispensable" ;) Fine work !
This is an interesting proof of concept. Now, make a little platform that lowers the alarm into the cup when the tea drinker puts the cup on it. They take a sip and put it back each time without touching the mechanism. The temperature drop whilst sipping should not be enough to set the alarm.
I love it. I adhere to the comments regarding improvements to the sound, and I'm curious to see what will you make to put it after it's used 🍵
beautiful! thank you for bringing this into the world, absolutely charming
You are a Fascinating individual are you sure you are from planet earth? ...lol... Excellent Job keep up the great work
Brilliant as always. Thank you.
What a great little invention!
The only part that I thought was a bit lacking was the ring of the bell. I suspect it might ring a bit clearer if it was sat balancing on a pin instead of screwed on tightly.
Will the difference in expansion between whatever the material of the rivets are made out of and the strips be an issue? Or is it one of those "might come loose in a few hundred years" kinda deals?
Not only do I love the over engineering for a simple problem the quality of the video is outstanding as well
Amazing, every home should have one. Thanks
Utterly relaxing and out of this world!
This is such a beautiful piece of engineering and machining, thank you for sharing this with us ❤
Copper and is alloys is usually tinned when used for cooking and storing food.