Teardown: Dettol 'No-Touch' Hand Wash System
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- Опубліковано 10 чер 2016
- Not an easy teardown. I made numerous assumptions which turned out to be wrong. Reminded me of my field servicing days - working on machines I'd never seen before. You just have to muddle through.
- Наука та технологія
7 years later, great helpful video, many thanks.
"This hasn't been an enjoyable experience"
Oh it has Julien, it has.
For us at least
I kept waiting for Julian to lose it and swear! Thanks for your patience & tireless devotion/sharing!
Thanks Julian, was going to throw mine away and buy a new one but took mine apart following your post and fixed it. My problem was the "slide" at 16.40 was stuck. Bit of force with a screwdriver and shifted it. "Cucumber Hydrating Splash is now on my hand", thanks a lot.
Thank you. Finally a picture of someone popping the battery compartment. After that I had the confidence to push very hard and it finally opened. Has worked perfectly for 2 years but I needed to change the batteries and could not see how! My hands are 67 years old so that was probably a factor.
Glad I could help
Ignore Ferenczi Csongor, Julian this has been one of my favorite videos of yours. I was laughing the whole time. Thank you for taking the time for your channel.
Thank you so much, I bought one of these jungle themed to encourage my kids to wash their hands more regularly and been trying to get work this thing out for days. Finally got it working. : )
I discovered I wasn't pushing hard enough to get off the bottom. Thank you for that part of the video. The rest, well took longer than I was willing to invest. In any case, I'm grateful to you.
these things are really useful in areas where you have greasy hands because you can start to clean up without touching anything. I have also filled the bottle with dishwashing liquid, works a treat. I knew you would have fun trying to pull it apart because I've been there done that.
I purchased this abroad, instructions were in Greek! Couldn’t figure out how to open the battery compartment 😂 searched the net and your video popped up. Watched first couple of mins and problem solved, thanks for that 😀
I'm surprised you recently bought this! I remember when they first came out on TV and we had one in the kitchen (and about ten in the cupbaord, my grandparents were hoarders)
Thanks for the tear down!
Your ongoing motivation made laugh a little. ;)
Now I now (at least vaguely) what's going on inside. :)
It's incredible to watch your amount of patience degrade so quickly, lol I would loose mine in two seconds with that design.. thx for sharing.
Years down the road, if you ever smell cucumber soap again, it will invoke terrible memories of this teardown.
Agreed - smells can be amazingly evocative. I went out with a nurse some 30 years ago and the smell of a hospital takes me straight back.
Thank you bro you saved my life my mom was like - if you can open this you’re definitely smart - and i did it
Came here to find out how to open the battery case. Stayed for the teardown. For some weird reason I couldn't stop watching. This was fun, thank you. Subscribing :)
Thank you for giving us a great laugh, one of the funniest videos I have watched in a while.
The 'plume' is air replacing the product used (otherwise collapseville of container.) Great fun pulling these sorts of things apart. Keep it up.
Your tear down videos and reviews are awesome!! fan of your page :)
keep uploading :)
Thank you.
sam sid
I have been watching your videos for a longtime and I agree with others... very funny video. Love how you are having all those troubles but still saying the complete name, "Hydrating Cucumber Splash".
The best comedy is the unintended type, very funny, made me laugh out loud.
The sensor system in those things seem to be well engineered, the batteries seem to last ages, could you test the standby current?
Another great video! I'm thinking of making a drinking game out of this video. Every time Julian says "gunge" you do a shot.
I have a older model, and the rubber seal in the bottom of the new one, is a very needed improvement.
Also, I've drilled out the top of the refill, and added cheap soap instead, then just covered the hole with clear tape.
Looking forward for that mysterious battery charge isolation idea to be revealed! :)
I already gave the secret away - check the Postbag comments :)
This must be a 2nd generation. The one I have takes 4 batteries.
It is actually a quite handy soap dispenser especially when cooking or baking.
I refill mine with ordanary hand soap. All this anti bacterial crap is just a scare campaign.
But I do also agree with earlier comments. This video was a toe curling experience. But I did watch it to the end ☺
Merci beaucoup ! J'ai pu changer mes piles. Trop cool !
Nice to see inside one. I refill mine regularly with cheapo poundland soap and have no problems with it dripping. Even so I would not buy another if it broke
I am Indian viewer .Thanks bro making a this informative video.once again thanks a lot.
Hi Julian.
Watching you struggle with that gear, may I suggest you get yourself a makerbeam starter kit. I got one myself to build test rigs for exactly this kind of purpose.
Regards
Adrian
I just had such a big laugh. One could see the temperature rising every minute you were at that monstrous thing lol
Tweezers may have been useful to have handy during this!
"Squirt a load of hydrating cucumber splash" hahahahaha
do you have to say the full name every time?
Literally found this video to see if I could fix my dispenser that has stoped working. Yeah, this is a lot. I’m buying a new one. Thanks. 👏🏾
What was the problem? Mine has stop working and I want to fix it.
Very well put together ............. still a piece of land fill . Very nice gears & " big end " Scottish yoke technique , to get the torque required for the pump . But such a waste of resources . So , you did not find the non return valve ( s ) on the pump head ?
I have 2 of them in the house. An old one and one like this. I like it because you never have to touch a filthy soappump.
The trick is getting the standby battery current very low, so the IR burst mark space ratio must be very large, 1:100 or 1:1000. The clue will be how long it takes to detect a hand. With such a large ratio, the camera might have a problem seeing the light, particularly as the LED on current will also be low.
A 1ms burst every 200ms should be more than enough and the range is so small the IR LED could probably be run at less then 10mA. The uC would go to sleep between pulses so a quiescent consumption of a couple of hundred uA should be possible.
Thanks. That gave me a laugh. I am tempted to watch again and count the number of times you said "hydrating cucumber splash".
I have a slightly different chip mode. The pins printing are in a slightly different order. RX+ and - are the first 2. Anyway, I can't figure out what's wrong with it. If I power it OFF then ON, it works for 2 activations, then it's completely dead. Any ideas?
Edit: I've put it back together without doing anything and it seems to working fine. No clue what was wrong with it. Maybe the IR diode was offset and the received did not get the signal? Weird, but happy I don't need to replace it, for now.
hi Julian, luv your channel, and your frustration here is entertaining, but if I were the engineer commissioned to design this useless product, I'd be quite annoyed. Please take this light-heartedly.... Some idiot expects me to make a gearbox that he can partially dismantle and it still works. He doesn't want any grease in it. He doesn't realise that you need to code an infrared signal to get noise immunity. And some idiot ;) doesn't see that the non-setting gunge around the top connections are a better way of preventing moisture ingress from a humid environment than hot glue? ( I really, really hope you don't take offence). btw, cucumbers can be used to store solar energy (Voltaire... or was it Swift?)
In case anyone's remotely interested, it's Swift in Gulliver's Travels. Mockery at the time, but true.
I love having a no touch soap dispenser in the kitchen for when I am baking and my hands are covered in butter. Or after eating fried chicken. It may have been designed for germophobes, which I am not, but it turned out to be essential in solving other problems.
Suggest you take photos (mobile phone?) before dismantling things - has made my life easier many a time!
i'm curious about the strips of metal on either side of the pump inlet (when assembled). My first thought was that it's a security coding to stop you from refilling the soap container yourself. (Maybe they abandoned that idea before production)
Or are they just grey plastic, rather than metal?
They're grey plastic
Quite amusing! I agree with some of the comments, time to get some tweezers!
FYI the pump is being done using a scotch yolk mechanism (or at least that's how it appears to me).
Keep up the videos Julian.
That's 'yoke' BTW.
sorry my bad. typo or autocorrect.
No problem.
“sometimes you see something in a shop, and it is just asking to be taken to bits, isn’t it?”
You should copyright this quote... priceless :)
Bought the early model, was terrible, very messy. Seem to remember the battery compartment in mine got gunked up and corroded the battery terminals. Was hoping to refill with ordinary shop bought detergent, maybe with this newer design it is possible?
lots of nice recoverable bits in there :)
The funniest moment: 15:29 . Very entertaining teardown, maybe they put all this goo in it to prevent people from taking it apart and playing with it. After you are done with it, please make it go bang! Someone already suggested 240 volts
well thats interesting... dettol is called sagrotan in germany and the logo is red. The products are identical though.
ours stopped working so before removing it with a spare one I wanted to look inside. had no "gunge" on mine - maybe it disappared over time. therefore i just undid the top tube bit, then pulled the LED through the shaft as I was removing the bottom. too bad i did not check on youtube before. tried just about everything - except.. shorting the receiver pins.. :-) maybe that would've helped to understand the issue.
i still wonder why i see no light on cellphone camera coming from the top IR diode, hm...
You can actually refill these with whatever soap or lotion you want, I've got alcohol hand gell in mine!
Try looking on TX pins with oscilloscope, there is probably some smart pattern going on to make sure device triggering tolerate other light sources.
re: using a mobile phone to look at IR led light. Some cameras have IR filter so as not to distort picture colour. Might be worth looking at TV remote control output, to see if the camera can see the IR light. This is usually around the 930 to 950nm wavelength.
Julian - it would be interesting to see if it worked with plain water - or if it needs to work with a more viscous liquid like the 'splash'.
I can see a use for it... take it apart, replace the electronics with a simple controller to drive the motor and monitor the microswitch, fill it with water - and configure it to act as a time based plant waterer. Should keep a plant going for a couple of weeks with that size of water reservoir.
Is the product working now?
very interesting video!
Does anybody knows type of IR transmitter LED which is used in this automatic soap dispenser? I mean exact type f.e. based on wavelength or other parameters
That compartment which we have to open is not opening at all as the plastic has not been carved to open, I tried the knife also to break the seals on either side as the cut is there but not carved properly to open
Great… It saved much of my time to repair mine…
Where can I buy this system?
There are three version of this product.
The original one that use 4 AA batteries.
The second revision that use 3 AA batteries.
And the third revisioon that use 2 AA batteries,
I have the original one that still work after years of inuse (eaven if at the begin he still have dry soap in his pump).
I put in 4 new AA batteries and BAM ... it works like new (and i buy it in 2009\10).
I laughed so hard while watching this... Good one, Julian! :-)
I think it works as follows: The dispense cycle is startet with the IR sensor. One turn of the big gear is needed for one cycle. The cam on top of this gear closes a switch which delivers the end of cycle signal to the supply. - There is a pin below the big gear which drives the piston of the pump delivering the soap; let's call it "drive pin". The radius at which the drive pin sits on the gear determines the amount of soap delivered per cycle.
So if you want to reduce the amount of soap per cycle, what most owners would like to do, the drive pin has to be moved onto a smaller radius on the gear. A solution would be to make a new gear with 3d printing yielding enough fatigue strengh to survive a lot of cycles.
what is the chip number, my guess it's a microcontroller, maybe a pic. The beam may be modulated to stop ambient light triggering the pump.
Almost certainly a microcontroller. It will pulse the IR emitter LED (can't have that on all the time) and synchronously read the photodiode). It will also read the microswitch and provide various timing functions (like a timeout on the motor if the microswitch input isn't seen).
Amei a dica ,o meu está assim com problema vou verificar o defeito grato ❤️
using a mobile phone camera, which are usually sensitive to ir light, to look at the transmitter led might have show how the device pulses the light to save batter power.
It would be interesting to measure the battery current in standby to see how long the batteries may last.
That's an interesting point. I use a mobile phone to shoot all my videos - surprising that the IR LED didn't show up.
Those wee screwdrivers are very easy to magnetise with a strong magnet. That way you don't have to swap over between the sizes. Just rub a magnet over them a few times.
thanks for the idea
the stuff is silicon grease to keep water out.
Silicone*. If it was silicon, it would be sand-like. As a registered ham op, you should know the difference.
Funny video! I had one of these. They are fine in the beginning but if you refill the box with any other brand soap it'll start to drip. It's too expensive if you always buy their soap boxes.
"If you want to sell lamp oil, give away the lamp for free."
+Anvilshock true ;)
If you want to sell inkjet ink, sell the printer at cost.
I took apart the previous version. Also difficult. WHY!?
Actually the receiver is in the black housing as it makes it non-sensitive to the visible light. It would be hilarious if it squarts gunk every time you turn on the light. The IR LED can be any color of housing including clear, it doesn't affect it's output.
Had such a laugh. Thank you!
gonna buy this. I have bought soap dispensers that got wrecked after a few months of use. But this would be better built.
The sticky goo is a clever ploy to get certain people to actually re-assemble,and use the product,instead of just tossing it in the junk box after they take it to bits. ;)
It does some sort of initialisation when you turn it on to get a kind of background IR level. Its oddly overly complex for what it is!
yeah looks like advanced alien tech beyond our comprehension. So the boffins made a soap dispenser out of it. I know...makes perfect sense doesn't it
you say overly complex.. others say no false readings.
The moulding that holds the cam's axle is separate from the top of the unit and looks like it snaps into place.
Mounting the cam / gear axle in the top , saving having to mount it in another moulding . Nice , until you want to run it with the top off . It has some nice details , other than it ' s a real piece of land fill .
Happy the batteries are long lasting but why does the thing give so much stress to get the battery compartment opened? Not a nice experience...smh
I liked your polish accent at the end 😩
Your funniest video so far. I was waiting for a point when you turn it on accidentally getting soap all over the place. Wonder if this could be used for something else? Like adding liquid feed to a hydrophonic system? Definitely not much use for your solar panels.
Bounce the beam via the solar panel, and when it gets so dirty the beam is broken it does a cucumber fresh wipe down ;)
hi Julian , please make a recap video of your best sepic and boost buck converters , I'm looking for one with cc CV ... thanks keep up the good work
The LTC3780 is probably the best - get one with 3 potentiometers for CC and CV
+Julian Ilett yeah but it's expensive and big in terms of size , I want a sepic to plug into a 3.7v 18650 pack to power high power LEDs and general projects ...
it's only 13$ (free shipping) and it's really good . I bought the one with 2 little heatsinks , but it failed after a week , they replaced it with the single big heatsink on the back , it amazing for the price, the max power is 80w (130w only temporary ).
+raff96HD I ordered one but I'm still wanting for it to arrive so I'll see , thanks for the feedback though
Julian, cut viewports into the housing, so you can watch it operate without having to actually open it and deprive the gears of their bearings.
"hydrating cucumber splash" :D
Some items just don't like to be taken apart. 😩
I always think HOW can robots assemble it and especially HOW can people make the robots do it
Hi Julian
Thay may of course use a jig for test purposes !
Oh, Julian! xD!
Please, please _please_ do a reaction video of the wife watching _your_ video! :D :D :D
Funny - just about an hour ago - while cleaning my Dettol (which, btw. I'm running with ordinary liquid soap, none of that stinky antibacterial rubbish), I asked myself: "has anybody taken it apart?" Let's check the internet. Then I forgot about it, only to find this :)!
You could get rid of the cucumber splash stuff, and fill it with beer. It would be a nice little, not touch beer dispenser.
You have to touch the taps (which will be covered in germs); always thought 'no touch' soap dispensers were stupid.
They make no touch taps for washrooms (very common in fast food restaurants as grotty little twerps can't leave them on and flood the place) and taps you can operate with elbows/forearms for the kitchen
9:43 - "squircuit board"... I suppose it is!
thanks
I have used one for over 3 years now. Stil works great on it second set of battery's and 4th refill.
Merci pour cette vidéo
What did you field service?
Pre-press machines (laser typesetters)
Not Crosfield?
Linotype
heh yes an old press job in the US the laser setter jammed and shortly after I was let go after it was repaired.
I believe they thought the laser breakdown was something I did. I am of the belief I did not.
Watching the fellow take the thing apart, I decided field service was more for me.
canny afternoon viewing, thanks
Thank u
YAY!!! You found your Philips head!
Even though the pile of stuff on my desk is so tall I can't see the bottom of my computer screen!
thx for a good video=P
Watching you solder the wires back, it became obvious that you don't have Big Clive's heat resistant fingers. Neither do I.
You just have to pull the refill soap container out of the dispenser to replace it. THERE IS NO EJECT BUTTON!! Share this with anyone who is wondering how to refill the newest version.