The best for the environment is, to stop producing gadgets nobody needs. The engineering and fabrication, the transportation and all other things harms the environment much more, than you can ever save with the products green thumb. Pointless!

@cup_and_cone

7 жыл бұрын

And introduce contraceptives to India and China... The #1 threat, and cause, is overpopulation. Reducing our population will do more than years of green energy. No matter what we create, our physical footprint is simply too big. Unless all humans agree to live in skyrise buildings and metropolises, there simply isn't enough land.

@DJDouglasWarden

7 жыл бұрын

+thechosendude My pull out game is strong.

@greegor4719

7 жыл бұрын

Don't the equations for judging something's "green" status take into account the environmental advantage of keeping jobs and industry going? Isn't putting a lot of people out of work supremely anti "green"?

@TheDessonator

7 жыл бұрын

therealnightwriter What do you mean by vaporising petrol gives complete combustion with high efficiency and zero pollution? Most petrol products that can be vaporised are a lot worse than the CO2 that combustion of them would create as greenhouse gases

@spectrHz

7 жыл бұрын

And what good would that do? Both India and China's birthrate are at or below the replacement rate. China is already experiencing the weight of retirees massively outnumbering the more educated younger generation. The problem isn't overpopulation, its distributing energy and food and land efficiently to the people we already have, more than 75 percent of the world is right at or below the replacement birthrate except in places like sub-Saharan Africa. Also, in terms of land use, even with humanities awful and neglectful overuse of land we still occupy under 10 percent of all surface land area. If we were more efficient, we could reduce that down to the smaller than the state of Texas.

I am just about to start my own crowd funding campaign for a watch that doesn't need a battery. It uses steels ability to return to shape to store kinetic energy. You add the energy yourself everyday, I am going to call the device that stores the energy a spring, and the device to add the energy a winder, and I will use a clever system of gears to transmit the energy the the watch hands by a system I am going to call clockwork, should be a winner, never need a battery again, hooray.

@TheMarcodiator

7 жыл бұрын

Whoa. Why don't you use a mercury based smartwatch! As it is a fluid metal, it would make the gears on the watch turn, generating energy! Or even better, with little prods, just shoot the excess electricity back into your body. GENIUS!

@yakacm

7 жыл бұрын

digitalradiohacker Ah that's the beauty of it, I just leave all that up to the user, IDK maybe and arduino or something, I'll leave the details up to the maker community.

@Garbaz

7 жыл бұрын

Sounds like something I heard before, hmm...

@oetken007

7 жыл бұрын

diecast jam Nice idea, but it's an old one. Watches like this exist longer than 30 years.

@yakacm

7 жыл бұрын

oetken007 Oh right OK I didn't know that, thanks for telling me, is my face red.

- "WE HAVE THE DATA" - "then show the data" - "NO NO WE DON'T SHOW THE DATA, WE JUST HAVE IT"

@EEVblog

7 жыл бұрын

But they'll show it to me privately!

@TECHNO_TURK

4 жыл бұрын

@@EEVblog ooh yesterday me to but i dont put it here on the comment

A thermal powered smart watch could certainly be made to work well. You just need to add a little tiny bit of PU-238 to provide the heat to run it for a few decades. Too bad nobody is making it anymore.

@littlegrabbiZZ9PZA

7 жыл бұрын

rocketman221projects Ever since NASA started begging for more (with current stocks, we can make one more RTG after the Mars2020 mission, then we're out), they've been making more.

@Spirit532

7 жыл бұрын

You can just use a lot(a few dozen curies) of tritium in an oversized betavoltaic battery. 1-10uW for a dec-.... oh...

@TheMrKeksLp

7 жыл бұрын

Just a little bit of the ol' nuclear material and it would run like a bobby dazzler idiot

@Spirit532

7 жыл бұрын

KrashCode You're an idiot.

@skyblockveteran5225

7 жыл бұрын

its obvious fraud

wanna help the environment? don't buy gimmicky crap that will be thrown out 5 mins after it's purchased in the first place.

@matsv201

7 жыл бұрын

.. but what to do if you don´t want to help the enviorment, but whant to spend a lot of money and claim that you do?

@wickedxe

7 жыл бұрын

Buy a Tesla electric car and claim it is zero emission and that the massive batteries it has are NEVER going to cause a problem when they are stuffed and need replacing.

@wickedxe

7 жыл бұрын

never mind the fact that the most pollution a car creates in it's entire life is from manufacturing the car in the first place

@raosprid

7 жыл бұрын

Should be perfect for that

@spectrHz

7 жыл бұрын

This is partly true, especially 10 years ago, but today, more recent studies have shown electric cars, at least in the US, are on par in terms of lifetime pollution including manufacturing as an equivalent fossil fuel vehicle with a theoretical 150 mpg fuel efficiency. So, at this point they are becoming much more viable than they once were.

Dave, I'm disappointed you didn't go all the way in testing this by waxing all the hair from your arms.

@shomonercy

7 жыл бұрын

You can't do that in Australia.

@subtledemisefox

7 жыл бұрын

You can't do this on Nintendo

@AtomicDuckQuark

7 жыл бұрын

According to those long passed commercials, only Megadrive players have lustrous and rich fur anyway. :o

crowd funding is the new tv infomercial

Just use mechanical wristwatch. They need NO batteries. =)))

@EngineeringNibbles

7 жыл бұрын

nihonam but they are expensive

@bdnetplayer

7 жыл бұрын

Not really, I got my Seiko 5 watch for 60€, that's not a lot at all for such a good one!

@grndkntrl

7 жыл бұрын

My Seiko Kinetic cost less than one of these and does everything I need from a watch, which is to tell the time & date. Lasts months even if you take it off and don't move it around.

@agfamatic91

7 жыл бұрын

buy a Vostok Komandirskie you can get one for around 40$

@grndkntrl

7 жыл бұрын

+agfamatic91 I had a Vostok. It didn't keep time well at all after a few months so I got a Seiko Kinetic instead, and that's been working flawlessly for over 6 years now.

In order to get free energy for your watch you have to turn your A/C on. Great idea!

@PunakiviAddikti

5 жыл бұрын

It's not quite free energy, the energy comes from the food you buy.

Are they phd students trying to pay back their debt? Pretty smart if so.

@Coolkeys2009

7 жыл бұрын

At least unlike many of their peers they're not working for the large financial institutions to get around any remaining regulations and cause a new private sector financial collapse, to be bailed out by the tax payers :-)

@Coolkeys2009

7 жыл бұрын

digitalradiohacker Not quite sure who you are, but both our original comments discuss some of the best people out of our education systems that could put towards solving the worlds problem being misused to cause more yet more issues. Many people lives have been damaged by the recent financial crashes and there are many people homeless and in poverty or suffering because of it. The basic causes of it are recorded facts.

Waaaait... 'MATRIX'... I GET IT. People as batteries. HURN HURN HURN.

@EEVblog

7 жыл бұрын

*snort*

@JustinAlexanderBell

7 жыл бұрын

Why do robots need human batteries again?

@4mb127

7 жыл бұрын

If you consider it from a mental perspective it makes a lot of sense. Given that robots are programmed to serve humanity, their driving principle is not electricity, which is plentiful, but instead: human approval and validation. Human batteries don't provide energy, they provide meaning.

@txtrader512

7 жыл бұрын

120V no less.

@infango

7 жыл бұрын

will it come with blue or red pill ?

What bothers me most is the waste of money. The $300k they raked in would pay for a solar PV system that would generate up to 200 MWh a year, which would cover the consumption of roughly a billion of these smartwatches. And trust me, the solar system would last way longer than most of these smartwatches.

@ADQAutomotive

5 жыл бұрын

Yeah, but they wouldn't get 300 k in the first place if that was the pitch.

@uK8cvPAq

4 жыл бұрын

@@ADQAutomotive I think for too long people have been seeing the environment as some kind of boring token gesture compared to gimmicky tech like these smart watches.

My university professors would have been ashamed to appear in such a cheesy feelgood video. It's just a solution for a non-existent problem. I had a Polar S series heartrate watch years ago (high end model with recording) and it did run 1-2 years on a CR2450. The problem is that everybody wants a fancy colour LCD these days.

"A watch you never have to charge" (micro print... but it does have a battery that will need replacing every few years.) [which, for the record, is the Pulsar digital watch I've had since 1980.] Do away with all the modern must-be-connected-to-the-interweb-bluetooth BS and yes, a pure tells-time watch only needs a few micro-amps. Heck, the motorola pager I had in the 90s ran on a single AA for months on end -- ISP engineer, I got a dozen pages a day. (for all you youngsters, think "text")

@EEVblog

7 жыл бұрын

In the video I show that even with a Bluetooth connection once per second 24 hours a day, you can still get several YEARS of battery life from a coin cell battery. The TEG is pointless.

@jfbeam

7 жыл бұрын

Indeed. I also like their dancing around not using a supercap. Real answer: it uses more power than it can collect - period. If they dropped the bluetooth smart gadget stuff, it really would do what they claim. But "smartdoodad" is just as much of the gimmick as the TEG. And while we're on the subject, Voyager is powered by an _RTG_ -- aka, "a plutonium power cell". (3 actually. generating 157W each, initially) The human body doesn't generate anywhere near the 2.4KW each of those RTGs generate(d). Something the size of postage stamp isn't going to be able to collect much of the thermal output of a human. My own crude data testing coolshirt systems suggest 200-250Wh, and that's from the total area of a t-shirt (mostly), from a human "under load". (not counting the ~100F ambient where we're using them)

@nigelrhodes4330

7 жыл бұрын

We just need TEG body suits and we can call it good.

@jfbeam

7 жыл бұрын

Nigel, there's an idea for the EV race car... "I'm going to need you to put on this suit, and heat yourself up to 9000 degrees." :-) 120KW for a few seconds to accelerate, and ~12KW continuous to hold that speed.

@nigelrhodes4330

7 жыл бұрын

Sounds cooooool

An unbalanced weight, of the kind used in self winding watches, connected to a mini generator would probably generate more power.

@ReneSchickbauer

7 жыл бұрын

My mother got one of these ten years ago in Asia. It's still working. Although it is a non-smart watch, which is another reason why it's still used at all. A smartwatch battery only has to last a couple of years anyway. After that, the software support vanishes, the cloud servers get turned off and the whole thing turns into a (rather tiny) doorstop anyway...

@bloccospirale4280

7 жыл бұрын

Seiko Kinetic.

@markevans2294

7 жыл бұрын

That probably work well. Considering it's been around for thirty years.

One obvious way to minimise waste is not to buy trendy, over-hyped gadgets that will end up in landfill twelve months later.

$300 says they release a charging base that's basically just a mini-heater to get the thermoelectric generator going.

@EEVblog

7 жыл бұрын

It will come fully charged form the factory, and they have said it will get 2 years battery life on the one charge. No one will need to charge it before the fad wears off and they buy another smartwatch.

I think that whenever such a project has "flexible funding", people should just skip it without even bothering to read what it is about. That "flexible funding" thing is always highly suspicious. It's effectively synonymous with "when you invest, we get to keep the money even if this project never produces anything".

Man dave's commentary over these videos basically satisfies 105% of my daily need of awesome

Targeting people who throw away their old phone every 7 months with "eco friendly" stuff. Yea. Who uses a watch today anyway.

The thing is, how can a TEG measure the calories dissipated via evaporation of SWEAT!?! Bah, humbug! Adding a solar cell in the bezel would likely make far more sense.

@EEVblog

7 жыл бұрын

There are huge questions to be answered here.

I sleep with my watch :/ 8:35

@AlejandroFerrariMc

7 жыл бұрын

So do I, but only because it´s tracking my sleep, and it vibrates in the morning to wake me up. :)

@user-lp2op9uu1w

7 жыл бұрын

Yes. That's fine, the problem is that there won't be a thermal differential over the watch which is needed to for the TIG to produce power (It needs a cold and a hot side).

7 жыл бұрын

Malte Gruber in my case maybe. I sleep with air conditioner in 23 Celsius, even with my body in a lower temperature than normal it will still be way more than 23.

@AlejandroFerrariMc

7 жыл бұрын

Malte Gruber Yes, we know this is gimmick. Great idea if it were practical.

@user-lp2op9uu1w

7 жыл бұрын

Félix Batista Sure, but you usually have your hand under your blanket though? I think most people do.

There needs to be an EEVBLOG stamp of approval on all new products.

Thermal powered dumbwatch CR2032s are 2 for a dollar at the dollar store here in America. But some people have more dollars than sense.

@girlsdrinkfeck

7 жыл бұрын

get apack of 8 of them for £1 in pound land in uk

@tjeulink

7 жыл бұрын

Justin Templer Sr your comment doesnt make sense, the Target audience doesnt care how cheap batterys are, they want to be better for the Environment. now i'm not saying this product is doing that but your comment isnt going to stop people from buying it because that never was their motivation

@freibier

7 жыл бұрын

But the production of this thermal powered watch (all the added electronics) plus the battery inside the watch make it just about as environmentally unfriendly, if not more, as a watch with a coin cell. That's the real problem here - it is a pointless and complicated solution for a problem which does not exist. By the time (3 years or so) the coin cell runs out, chances are that on this thermal powered watch, either the battery will also have gone bad and need replacement (for more $ than a coin cell if it is even possible at all) or the whole watch will have to be replaced (because it's a plastic thing you wear while exercising and so it will get scratched/dropped, the wristband will get nasty from all the sweat or maybe you will simply want a new gadget). Will it work? Yes. Does it make sense? About as much as buying a $100 electric pencil sharpener for your home office when a $0.50 manual one would also be enough for the one time a week you need to sharpen a pencil. Want a watch with pretty much "eternal" battery life? Get something like this for

@justintempler

7 жыл бұрын

tjeulink I think anyone that is buying this watch thinking he is bettering the environment are the ones not making any sense.

@tjeulink

7 жыл бұрын

Justin Templer Sr they don't no, but this watch isn't marketed at people for saving costs.

What a time to be alive, when we can talk about the "Traditional smart-watch" ;)

@EEVblog

7 жыл бұрын

LOL. Yeah.

@jamieeast4974

4 жыл бұрын

Yah mean s*** that don't work.

Thermal powered? So the electrical resistance in the circuit creates heat and the watch runs on heat. Brilliant! Infinite energy!

@TheAmmoniacal

7 жыл бұрын

No, it generates power from the temperature differential across your skin (~32-35 C) and the watch face (~ambient temp).

@damonh5551

7 жыл бұрын

TheAmmoniacal im pretty sure he was trolling.

@AnonymousUser77254

7 жыл бұрын

TheAmmoniacal That was a joke

just wanted to say how much i enjoy your videos mate. its reinvigorated my interest in electronics i had as a child. plus that classic aussi humour you incorporate into your videos. dont change anything!

@EEVblog

7 жыл бұрын

Cool, thanks.

I have a watch that does not need charging, it has this knob on the side that you turn once in a while and it keeps on going. Amazing right ?

@tybofborg

7 жыл бұрын

Not really. I had one too, I could never remember to wind the damn thing. I'm pretty sure I ended up overwinding and broke it.

@Coolkeys2009

7 жыл бұрын

That's charging your watch mechanically. How about the winder turns a generator that charges the battery? One minute wind for a week or more power could be useful, or you could just use previous movement based generation technology (eg used by Pulsar Seiko)as it's an exercise watch.

@ferulebezel

4 жыл бұрын

@@Coolkeys2009 The Seiko Kinetic is pretty much what you described. It's noisy as fuck. You're better off getting a standard automatic.

If the main point for them is to reduce the waste in battery and with this reduce the carbon footprint, my question would be: How much pollution is created in order to produce the TEG used on the watches? And on the subsequent battery? And how this is compared to the pollution created by the production of a coin cell battery? EEVblog, Dave, what do you think regarding this point on the subject?

@EEVblog

7 жыл бұрын

Don't forget the charging circuitry too. No contest in that department I think. Solar is a nice cheap and reliable way to augment battery life if that is a goal.

@Fifury161

7 жыл бұрын

I was thinking the same thing - any studies already done?

@leandrolaporta2196

7 жыл бұрын

lithium even when they last a loooong time they are pretty harmful for the enviroment, but hey the watch has a Lihium Ion battery rechargeable anyway, and how many cycles can it endure?, 500? 1000 cycles, not more, i doubt the lifespan of the rechargeable battery will be above 3 or 4 years, so from that point of view, it is almost the same i think, that using a primary lithium cell.

@stinkycheese804

7 жыл бұрын

Depends on how it's designed. Li-Ion can endure a lot more than 1000 cycles if kept below 4.1V peak charge, but remember that is a full discharge/recharge cycle rate. When you have a supplemental perpetual charge source, you're not full cycling the battery the same as the scenario used in the charge cycle rating. Personally, I don't want the extra bulk on my wrist nor the ridiculous cost of these visionaries, so I see it as a bad place to implement the tech today, but if you isolate it to only batteries, devices, and power generation in a different product, I wouldn't complain if a product with a built in, non-(reasonably) user-replaceable high cost product had a way to extend the lifespan of the battery so it doesn't end up as landfill trash as soon, factoring for cost per year ownership. Either way I consider it something you throw away within a decade, which seems like a toy for the rich when it's just a watch and I don't buy into the addiction to needing such a thing to further fuel one's addiction to mostly random noise sources of information.

@BartBVanBockstaele

3 жыл бұрын

@@leandrolaporta2196 That's what I thought when I bought my PowerWatch 2. I thought "never recharge" meant: for as long as the battery lasts, i.e., a few years, because after that, nobody will even remember those batteries ever existed in the first place. After that, it's be time to buy a new watch.

Yeah... The power a lamp uses in 30 minutes is probably still more than this watch would use in its entire lifespan. Saving the earth is as easy as using 8 less coin cell batteries? thats awesome!

@EEVblog

7 жыл бұрын

Spot on. A 20W CFL globe on for 30 minutes would use 10Wh. This watch even with Bluetooth on 24/7/365 at 100uW would take 8.76W in 10 years.

@greegor4719

7 жыл бұрын

How would recycling 8 coin cells compare to recycling one NIMH battery as far as their "green" status? When recycled, How would they environmentally compare on the recycling side of this "green" status?

What's the lav mic you're using? Sounds great and I'm looking for one lol

All is right with the world again. Thanks dude.

@EEVblog

7 жыл бұрын

No worries.

Simple solution: Just attach a McDonald's apple pie to the TEG, and enjoy your new Overunity device. :D

that would work great in a very cold environment

@sleeptyper

7 жыл бұрын

"John, you have to wear gloves when working outside! - Sorry, no can do, have to charge my wristwatch first. Only 500 days left. :)" - South Pole Station doctor instructing John.

A testament to how awesomely respected Dave is that.. a) They mention how they respect him on the forums and b) He can stand in front of a white-board and talk to us.. and we'll watch it and listen to it.. and rewind and listen carefully and make sure we've understood every single thing he said... cuz it's gold! Thank you Dave for being awesome and then for sharing your awesomeness with us

I think what makes this work, is not the energy from your body heat, but the fact that when the watch goes out the door, it's probably with a full charge. And then, by the time the thing runs flat, it's years later, which honestly, you are more likely to have the device die before the battery runs dry. But, honestly, it's the illusion that is most important here.

I find it funny how many people learn about peltier junctions and go crazy with ideas than get slapped in the face by reality

I love Dave's over dubbing of the products video! So funny!

I'm curious, how would the numbers change if we assume the display only turns on demand (when touched, or used)?

@EEVblog

7 жыл бұрын

Not by much. It would make the case for a TEG being practical even worse. As if you just used an ordinary battery you'd almost the shelf life.

@EEVblog

7 жыл бұрын

Even they admit the fully charged battery in the watch in sleep mode will last 10+ years! So what point is the TEG? There isn't one, it's a gimmick.

Since a small capacity CR2032 could power that watch for 3+ years they could still claim that it would not cost you any batteries if they supplied 5 CR2032 batteries with the watch for free. That would get rid of the TEG and Li-Po battery and still get you +15 years of free battery use and it would only cost them 5pc of the CR2032 batteries which would be pennies in large quantities. Still less cost than the TEG and Li-Po battery and associated circuitry. On a side note... Li-Po batteries can outgas and catch fire if overcharged (not likely) or deeply discharged (if not worn for a extended period).

might work to power a simple watch

@TheVexCortex

7 жыл бұрын

It does, Dave mentions them in the video. It takes *so* little power to run analogs, I've personally had one with tiny solar cells on it that it supposedly ran off of. I've also herd of, but not seen personally, watches that run off of stored kinetic energy captured from you arm movement.

@petrdolezal2604

7 жыл бұрын

I have those watches which stores kinetic energy, they are little heavier becouse of the weight that moves inside (which i dont mind). Works great , only downside for me is, if i put them down for few days, they will "die" and you need to set clock and date again. But thats not a big deal. They will last day or 2 on their stored energy.

@TOO2150

7 жыл бұрын

I've already got a digital watch that runs on solar power. It has a compass, altimeter, and barometer. I left it in a drawer for two months and the battery was still 2/3rd's full, five years later and the battery still reads full even though it spends almost no time in direct sunlight. Digital watches just don't use that much power. It's a Casio Protrek Toughsolar if anyone wanted to know. Smart watches draw several orders of magnitude more power.

@CookingWithCows

7 жыл бұрын

solar calculators! not much different

@Ts6451

7 жыл бұрын

I would think one of those moving weight based systems would likely generate more power than the thermoelectric approach for the same amount of exercise, and would not be dependent on a thermal gradient.

"nobody wears a watch to bed" im wearing my watch since 4.5 years and haven't taken it off yet

@EEVblog

7 жыл бұрын

Nerd

@wytsfrevsf

7 жыл бұрын

I have a solar powered watch i have been wearing for over 20 years!! including bed and shower/bath! the watch is over 30 years old!! and still works fine

@kraken767

7 жыл бұрын

Wouldent the solar panels have gotten cloudy and significantly reduced in output in that amount of time?

@FooBar89

7 жыл бұрын

why on earth would anyone wear a watch? use your smartphone, it tells time too!

@DanaTheInsane

7 жыл бұрын

Till I got my Apple watch I ALWAYS wore my watch to bed!

Is the DMM current shunt (100 Ohm) a valid load? Max power would be for a matched load to TEG ESR.

I've got a Sunto Core sports watch. Uses the CR2032 battery. Nice watch I bought it as a reward to myself for quitting smoking. First battery lasted with me little more than a year (don't know how long it had been on the shelf before I got it.) So far the second one has lasted a little over 2 years. Runs a Altimeter, Barometer, dual time zones, stop watch, count down timer, compass, Sunrise/set, can set a storm alarm (goes off if the barometer drops) The back light is a bit weak, but it's really good in direct sunlight. Think I will stick with the battery since I can open the watch with just a quarter and chance the battery. Hard part there is to be careful not to cross thread the cover.

Dave, did you consider the self discharge rate of the battery?

@tybofborg

7 жыл бұрын

It's pretty much a non-concern with lithium batteries. I have a CR2032 installed in my work computer's mainboard (came with it in 2008), still powers the RTC just fine. And as I work with cell phones, I've seen them (with Li-ion batteries) spend more than a year in a drawer and still show 50+ % charge on powerup.

@EEVblog

7 жыл бұрын

Nope, i was being generous and keeping it best case ballpark.

@MisterIndeciso

7 жыл бұрын

tybofborg Self Discharge isn't a problem with Alkaline batteries, that probably after ten years would still be at 70 or 80%; but with this slow charge rate a li-ion could even lose charge while charging. Consider that the battery would be stored at 30 or more degrees. (Sorry for my english, I'm italian)

@tybofborg

7 жыл бұрын

Thinking about it, you're absolutely right, it changes the whole equation. Wikipedia tells me that the self-discharge rate of Li-ion batteries is 2 to 3% per month. If we take the upper value (due to high storage temperature), the battery discharges itself in 1000 days. Dave has calculated that a full charge from flat would take 961 days. So with Dave's usage scenario the battery just self-discharges every bit of charge it's getting! There really is no way to charge it with your body heat alone, you'd need to put it on a hot water pipeline or something to actually charge it! The whole gimmick makes even less sense than I thought!

the solar powered dumb watches manufactured by Casio are cheap, good looking, and capable of storing more energy than they use on most days!

@Landrew0

7 жыл бұрын

Some of them had a solar panel on the face, as I recall. Much more efficient than this codswallop.

@Marci124

5 жыл бұрын

I've had and worn mine for 5 years, the charge never went below MED.

Like the sweet irony of the solar-powered calculator. That brings me to my solar-powered diver's quartz clock with unibody ... that makes some sense as the solar cell allows for a more rigid watch body design; now using a thermal generator in cold watre dives at 4-8°C ... maybe I could also harvest money on an indigogo campaign?

Great review Dave. WAY more thorough than I thought this would be. Nice work!

A body-heat-powered watch? You mean I wouldn't have to be bothered to change the battery every... 3 years? WOW.

@tohopes

7 жыл бұрын

17:55 _poofteenth_ Oh God. Just when I thought I'd figured out all the Australian slang.

@NGC1433

7 жыл бұрын

Get a solar powered Casio or a Seiko kinetic, latter ones don't have a battery at all. And that lithium cell in the gimmic probs will die in a year or two, like in phones and mp3 players.

whats going on at 24:57 in the top left?

@Landrew0

7 жыл бұрын

He blanked out something he didn't want to show. Maybe a logo or a poster.

@Graham_Langley

7 жыл бұрын

+Landrew0 As there's a reversed EEVBlog under it I'd hazard a guess it's something on the glass that would identify the location.

Great work matey... keep up the good work!

Is it possible that if you were running in the wind, or even riding a bike/motorcycle that this would help?

With the small amount of power they are generating from the TEG, they would be far better off using a coin cell, as the power generation of the TEG would never be more than the power consumption, so the TEG would never actually charge the coin cell. Using a Li-ion cells is wasteful.

They better had powered it with some betavoltaics or nuclear teg, now that would be a never ending batter.

I've played with TEG. Their efficiency depends on temperature difference - to get them to work decently you need to get the temperature difference up high, which means running them with the hot side dangerously close to the point at which the TEG will be damaged. I've seen 'high-temperature' modules that use materials capable of taking much higher temperature, but they are far more expensive than the regular ones, which are designed more for cooling.

Great vid Dave! One thing I thought you would bring up and discuss was the fact that even if this all worked exactly like they said and it pulls in more than it consumes, their claim that you''ll never have to change the battery is a flat out lie. Every battery eventually fails and has to be changed out at some point.

Dave, excellent as always!

One of the problems with university's is they are very scratch each others backs. I discovered thin while doing my masters in computer network security. One of our assignments was to review other journals on the subject our project was based on. I was brutal in my reviews and panned most of them. My main tutor loved my reviews probably because they expressed what he thought also. The other academics were not so kind. They must have taken offense and it was only my tutor who stopped that bit of work from failing. Long story short academics do not take criticism of their work well. Could explain why the whole SJW bull grew and flourished there. They really don't like people calling out their bullshit. Great things can never happen in a yes man environment, university's really need to sort this.

@jackmcslay

7 жыл бұрын

My alarm sensors fired off the moment he mentioned that the developing team were a bunch of academics. Good products come from practical engineers who know more than just what works but also what's practical and cost-effective, you can hardly expect people in academia come up with breaking new technologies on their own.

@TheEPROM9

7 жыл бұрын

Jack Mcslay Academia has quite a few problems at the moment. Got out just in time with my degree. Never bother with the NUS, was not wrong they were a pointless organization.

@MiltiadisAlexiosPapadopoulos89

7 жыл бұрын

Engineers are always practical. Engineering is by definition the practical exercise of science. Also, academics can be engineers and vice versa.

@MiltiadisAlexiosPapadopoulos89

7 жыл бұрын

Its true that some academics do not take criticism very well. In most cases its due to their ego projection but in some cases its because the criticism provided is destructive in nature and comes from people with limited knowledge and skills who keep asking "what does it do?" and "why is your prototype so crude and unrefined?". Academics do not provide products, they provide concepts.

@MiltiadisAlexiosPapadopoulos89

7 жыл бұрын

I really liked the video though. We need this type of criticism that cranks the numbers and gives it to you fair and square.

Saw you via Thunderf00t! New subscriber!

What eevblog does for us! Great video. Entertaining and educational! You're in great shape too!

What about the Seiko/Citizen solor power power watch? Do a teardown, Awesome nyc

how about sticking generators in exercise machines? 1 hour will make a smartwatch run for a few 100 years.

@Coolkeys2009

7 жыл бұрын

Awesome idea wireless or fast charging ports on gym equipment. A lot of gym equipment is already self powered and have on board generators e.g exercise bikes and stepping machines so this would be quite easy to implement.

@JohnDoe-qx3zs

7 жыл бұрын

Nah, those generators have already been reserved for powering the lights and showers.

@soErnsthaft

7 жыл бұрын

Im in for this idea

love your t shirt logo. introducing a negative feedback in an open loop system to bring steady state error to zero!

I have a Citizen Eco-Drive. It works on solar power, and so you never need to change the battery. It syncs with GPS satellites every day so it's always the correct time. I don't need a wrist-worn repeater screen for my phone.

Just put a battery in. My watch uses a battery. It needs replacing every 3 years and costs less than a cup of coffee. True, my watch doesn't tell me how many calories I'm burning because I'm not a moron nor does it do anything else that only morons have on their watches. It just tells the time and date constantly and accurately for 3 years. Then when it slows down I buy a new battery and I'm good for another 3 years. Simple.

Dave, you mention the 'professors' often in the video and the first quote that comes to mind is, "Those that can, do. Those that can't, teach." If they were great in their field, they would be billionaire developers, not professors. That's something for everyone to think about when these crowdfunding campaigns are run by these kinds of people.

Would solar cells somewhere make the same or more power input? Like on the case edge for example?

36 degrees! Lucky bugger. It's not even half that here across the Tassie.

stick the watch in your oven, microwave, girlfriend ! that will charge it up pretty dam quick !

Well, I wear my watch in bed. Have been for 30+ years. Also, not a fan of calisthenics/cardio; I prefer short, high-intensity exercises. For the past 25 years or so, I’ve been wearing the same cheap Chinese digital watch (with a gimmick capacitor I cobbled together to increase the accuracy to about -3 sec./month). The bracelet is a bit worse for wear, but the watch is still going strong. Yay, “dumb” watches!

@greegor4719

7 жыл бұрын

Using that one cheap watch for 25 years is extremely "green" without trying to be, right?

@AstAMoore

7 жыл бұрын

Greegor47 Hey, come to think of it-you’re absolutely right! I hadn’t thought if it.

@greegor4719

7 жыл бұрын

That's a superb ROI.

@AstAMoore

7 жыл бұрын

Greegor47 A penny saved is . . . worth two in the bush.

@omfghai2u

7 жыл бұрын

I wore my previous clock pretty much for 10 years without taking it off. Sadly it is now dead :(

I bought a Powerwatch 2 at Best Buy in Toronto on 2020731. I only really wanted three things: a reasonably accurate step counter, a reasonably accurate sleep counter and no recharging required. I have had to recharge it 7 times so far. As far as I know, that is a lot better than other smartwatches, but it it still very annoying, since not having to recharge it was the very reason I did not buy another smartwatch. Given that rechargeable batteries have a limited lifetime, this is an expensive gadget with a limited lifespan that does not live up to its promises.

"Nobody wears a watch to bed" Actually, I wear a fitness watch to bed to track my sleeping habits. Though I'm not sure I would wear a watch to bed just to keep it charged, so you have a point there.

It would be better to just have a watch with a pull out hand crank. Then you could probably even have the features of a normal smartwatch. Or maybe, just maybe, you have a watch that you PLUG INTO THE WALL and it just simply CHARGES... also, you should do a video on the USB Killer, and maybe do that thing where you blow shit up with a disposable camera's capacitor

@bart416

7 жыл бұрын

That one would get charged very quickly during boring meetings. "Sorry lads, got to charge my watch. Couldn't find a good place to do it so I organised a presentation on if we should increase the 100 nF decoupling capacitor to 110 nF with ... senior management." Not only would your watch be fully charged, that would arguably be the most funny meeting ever to see the minutes of considering the average electronics skills of managers in most places. Additionally you'd have a giant red spot on your forehead from bashing your head against the wall afterwards, but that's a common side effect of all management meetings experience teaches.

Honestly, I've never had a watch which lasted long enough to run out of power. Rofl.

10/10 for effort & completeness :D

in cold climates we normally wear long sleeves and the watch (or any other TEG powered wearable) will most probably under the fabric in a nice warm environment _without_ any thermal gradient - i.e. zero power production!

I mean I've seen roasts on the interwebs but this is on whole another level of indiegogo excrement. Thank you Dave for the entertainment.

@EEVblog

7 жыл бұрын

You're welcome.

I really think you missed the mark here Dave, the point was specifically to eliminate a disposable battery. If the product functions exactly as advertised, it's a pretty douche move to 'debunk' it like this. They're not batterizer, gimmick or not, it functions as intended. It's a cool idea of a product. And it helps fund to further the technology to a point where it isn't as gimmicky.

@EEVblog

7 жыл бұрын

How long do you think the internal lithium ion rechargeable battery is going to last? (Hint, they fail quite easily) A CR2450 would last the shelf life of the battrery

@93DavidJ

7 жыл бұрын

EEVblog That may be true, but the device still functions as intended and as advertised.

@squat224

7 жыл бұрын

True, but if the point is to remove the need for disposable batteries, using a dirtier to produce battery in their place is a strange way to do it.

@93DavidJ

7 жыл бұрын

No, that's not the real question. Plenty of things are unnecessary. Look at the early electric cars. Most of those were garbage compared to gas cars. But those were foundations to build on. The questions for indygogo campaigns are can you back up your claims, and does anyone want the product. If both are true then good for them. So the product is too gimmicky for you. Who cares. Lots of products are gimmicky. Some of those gimmicks grow to be awesome products eventually.

@googleenshitified

7 жыл бұрын

they advertise the watch as a contribution to the quest on saving the world by saving energy - but their energy footprint sais otherwise: instead of a disposable coincell they use a disposable lithium battery AND a disposable thermal electric generator

I wear my wrist watch 24/7. I wear it outdoors, indoors, in sauna, while taking a shower, sleeping etc. Though to clarify, I have an ordinary Titanium watch, which is SUPPOSED to be waterproof to 10 athmospheres (about 100 meters). For how long? I can't tell. The titanium does not heat up nor feel cold while wearing so it's basically like I'm wearing nothing at all on my wrist. And it lasts for a couple of years with a single battery. I've been looking for smart watches, but the battery life and them being pretty much non-compliant with humidity and straight contact to water haven't been exactly adequate for my needs. Though a friend of mine has the Pebble whatever-the-first-version-is with the metal band and it survives being exposed to sauna humidity and being worn during a shower, or at least his pebble hasn't broken - yet.

I do wear my pebble to bed, for the sleep tracking and silent alarm feature, and it works great without giving me any physical issue at all

just wanna say i wear my watch to bed, have done for years. its not that uncommon

@BartBVanBockstaele

3 жыл бұрын

Same here. I don't even know any good reason to take it off, except for the PowerWatch because it has to be recharged. Grrr.

i have a watch that doesn't need to have a battery changed it has small solar cells in there around the lcd it works wonderfully i don't need any thermoelectic shit

@thepussygrabbingfamilyvalu557

7 жыл бұрын

my watches are powered by ataumatic movements... just plain old mechanical power....

@duskonanyavarld1786

7 жыл бұрын

Automatic movement is useful but lose more time than quatz clocks.

@thepussygrabbingfamilyvalu557

7 жыл бұрын

Du sköna nya värld cheap shit, yeah. but my tourbillon patek hasn't drifted 1 second since my grandfather bought it in 1895.

@dimosk7389

7 жыл бұрын

thats from patek themselves: The stability of the rate of Patek Philippe timepieces is checked in several phases during the manufacturing process, initially with uncased movements, later with finished watches. The final rate accuracy measurement of the cased watch is performed with kinetic simulators and must comply with the following in-house precision standards: - for calibers with diameters of 20 mm or more, the rate accuracy must lie within the range of -3 and +2 seconds per 24 hours. - for calibers with diameters of less than 20 mm, the rate accuracy must lie within the range of -5 and +4 seconds per 24 hours. Patek Philippe watches with tourbillon are subject to the same in-process inspections as all other mechancial timepieces, but they must comply with tighter tolerances as follows: - Their rate accuracy as measured during the final inspection with kinetic simulators must lie within the range of -2 and +1 seconds per 24 hours. - The greatest deviation between the average rate of the watch in all six measuring positions and the rate in each position must not exceed 4 seconds per 24 hours. The rate accuracy of each Patek Philippe watch with a tourbillon is documented with an individually issued certificate delivered with the watch. every single mechanical watch cannot reach the level of accuracy of even the cheapest chinese made quartz watch and the high end movements are usually less accurate than the simpler ones, because of the more complications involved.

@morbideddie

7 жыл бұрын

My cheap citizen eco drive is more accurate than any mechanical on the market, if you buy a Patek for second perfect time telling you're going to be sorely disappointed.

I had a Casio watch with solar power recharging, that thing lasted 12 years before the water seal broke and water got in and it died. I liked it so much I bought another one. *12. YEARS.*

The main trouble with this is that the watch will still get warm from your hand and then it falls back on the battery. Estimated 1h until equilibrium, where 10-15 µW maybe is there. It maybe will not discharge at deep sleep. Well, if you're running, you might be able to slightly charge the battery. But 0.5 mW is just barely trickle charge for this CR2032 with best DC/DC and battery controllers available. Lack of piezo and radio wave generator is a missed opportunity. Maybe they couldn't fit it in. Or a hydrogen fuel cell, that would properly heat it up. ;)

I'm surprised how easy it is to fool people... I mean it's just been a thousand views on this and may be a few thousands more at best.... rest of the world would never know.... and will fund, buy & use this watch never knowing the truth.... shame on these professors....

@EEVblog

7 жыл бұрын

Yes, most people will never be aware. I have no problem with them making and selling a TEG powered watch just for kicks and/or research funding, but at least be honest that they could have done the same thing with a standard battery.

@shakaibsafvi97

7 жыл бұрын

Hi Dave, "Honestly" tell me... If these profs were "honest".... would people buy and/or fund the watch ? The whole idea is to hide the truth and make money.... so that their kitchens keep runnin' from the so called research funds..... As you say "Bastards!!!!" :)

@EEVblog

7 жыл бұрын

Maybe they would. I think there is still a market for a TEG powered watch just because it's "cool". Esp if the funds go to help research. Most likely not the $300 they've gotten already though, but you never know...

@shakaibsafvi97

7 жыл бұрын

Yeah... I guess people really are into Cool Stuff..... Hey... How about a retro dynamo / manual winding powered Smart Watch..... Wouldn't that be practical and Cool ??? hmmm..... :)

@SirArtikbot

7 жыл бұрын

This is how I see it as well. Besides the actual product being a gimmick or not, the important bit is that it funds research that might actually make this viable in the near future. Me personally? I would've made a nice watch with a monochrome e-ink display powered by the TEG and none of the fancy bits. But if this causes them to get more funding for further research, go for it.

Pretty cheesy and generic promo video complete with lab coat jockeys.

the self discharge of the li ion battery won't allow for any surplus energy to be stored actually.Best scenario 2% capacity loss per month so 14.8mWh only for that.If you you only have 0.77mWh per day surplus you need 19 days only to counteract the self discharge.Now if the self discharge is 3% you don't get any power surplus at all...

Nice video! And bonus points for the high speed training video montage! ^___^

Muh feels product. Feels down? Want to make your feels good? Buy our shit and it'll make your feels good, and make our -wallet- planet feel good.

I'm wondering how much juice something like that can produce if you attache it to the heatsink in a PC now.

Never want to run out of battery, get a mechanical watch with an automatic winding eccentric. It's classy looking too!

My Casio Wave Ceptor has been running for 20 years from the solar PV cell.

Hahaha! So much fun hearing Dave's real-time comments when playing the promo video :D

I'd love to see more feel good video commentary

The one thing i like about these presentations is the way math and engineering go hand in hand.

could you use a peltier device to generate electricity ?

As I recall TE module's power generation depends solely on temperature difference. Exercising doesn't raise body temperature that much - most of the excess heat is released as water evaporation, and not captured by the TE module. Since the body's temperature is pretty much constant, we could considering it as an infinite heat bath (or thermal reservoir), the difference in power generation between exercising and resting should not be as much as Dave claimed.

Omg just listening to him talk over the "feel good video", so hilarious :D! I love these videos

Only reason I ended up here was after seeing the ad pop up I liked the idea of a decent looking smartwatch that had the same less hassle benefit as my old automatics or Ecodrive Citizen but with at least very basic smartwatch features similar to my Pebble Steel. No remembering or needing to charge daily or even weekly would be great in a smartwatch. The original Pebble Steel was the best at frugal power usage with it's monochrome E-Ink and my battery lasted a week and the big plus was also that it was shower/swimmable waterproof. So my only consumer interest, likely shared by many seeing the ad for this watch is the idea of taking the charging hassle out of having a smartwatch rather than some ideology that it's a big green watch that will save the whales anymore than electric car battery tech at this stage does anything better on the green side in reality. Video is a good technical breakdown as I never paid attention that there ever were TIG powered watches out before this one in the first place. At least I can turn down my thermostat this winter and save my gas bill and stay toasty with my BedJet under covers heated air blower instead. lol yep and it does unheated air in summer for cooler sleeping when it's hot out too.

At 13:37 in your video you talk about Bluetooth. The problem is you don't want it to work, so you're not looking for ways to make it happen. How about making a connection only when data needs to be transferred. The watch would be ready to receive, but the power needs would be minimal. Bluetooth readiness (and the display) could even turn off when the watch isn't on your wrist producing energy.