Inside a USB rechargeable atomizer gun (with schematic)
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- čas přidán 23. 08. 2024
- Well this is a messy thing. It's like the Hazer Phaser, but much more portable and MUCH moister.
One correction (so far). After reassembling the unit I discovered that the microcontroller starts by ramping the motor up slowly to control the initial current peak.
I'm not sure the original purpose of this device (hair spraying?). But it has been covidulated into a disinfecting gun.
You can load it with the contents of cheap supermarket surface sanitiser and then blast most surfaces with its saturating output. Unlike the heated units this doesn't create much of an airborne haze, but instead does the equivalent of pumping the trigger on a spray gun at high speed.
I don't recommend its use near delicate electronic things, including phones and keyboards. And note that after turning it off it still squirts what was left in the armoured black tube (possibly a simple acumulator?) with decreasing force until a small drizzle sprays out the end.
One good thing about the simple diaphragm pump is that it shouldn't suffer harm if run dry when the bottle is empty.
Here's a starter link for eBay:-
www.ebay.com/s...
The comment about how electric fans have a speed dial labelled off-high-medium-low reminds me that Technology Connections did an excellent video on this a few months ago. I had wondered about it myself. It is all to do with the peculiarities of shaded pole motors.
His video came to mind as I said it. It's a common bump start technique also used in electronic motor control.
Comments like this do well to illustrate that we're all part of an extended technical family.
Perfect to spray anti freeze on the car windows without getting cold fingers.
And after using anti freeze on your car all your windows will fog up like crazy because the windshield cooled down due to the melting process.
I rather scrape like in the good ol days instead of crashing into somewhere ;D
@@IncreasingVoltage Or just use heated windshield or preheat
@@IncreasingVoltage there is a product just for that, I only know it in my native language but roughly translate as "liquid scraper"
@@Lee5p33dy well played sir
One way to stop frozen windscreens is to start driving a Ariel Atom
Atomiser? - more like a water pistol!!!!
I was thinking about that pic of the priest using a water pistol to baptise a kid at a safe distance during lockdown.
Water pistols at dawn. I don't know what Dawn will say when we spray her with water, but it is all in good fun.
lol, I baptise you with the gun 8-l Ooooh! Why does that sound wrong? lol
Clive: "does this open"?
Viewers: " that's a silly question, 'cause Clive + Spudger = opens anything!"
I say, a contest between him and the Doctor. Who can open what fastest?
And if Clive + Spudger can't open it, Clive + Hammer can...
Vice of knowledge, X-Ray hammer, there are many ways
Clive the Spudgerer!
Always love watching Clive spray and make a big mess on camera.
When I heard the pump, I had instant flashbacks to my brother's silk-screening shop. The atomizer gun reminds me of a spotting gun used to remove unwanted ink splats on silk screened garments. Using carbon-tetrachloride squirted through a very tiny nozzle, it put out a strong fine needle-like spray that was forceful enough to break up the ink. The unit wasn't rechargeable, which would have been helpful indeed, but I'm sure it would have been today. Being the early 1990s, rechargeable devices like we have today weren't as common.
Ah, the old man issue. When you think your done peeing, the old John Thomas isn't listening and still has some ways to go.
Yep, what still works, leaks.
I like the zoom dude, keep it up 👍
Clive you're always entertaining but your inimitable style really has been a great pleasure during Covid.
The mosfet trigger is a common add on for battery airsoft guns as it stops the contacts arcing and can have active braking and 3-shot and other functions.
I wonder why they didn't just use the trigger switch to power up the LEDs and the MCU directly, and let it switch the high-current device itself.
source and drain - after teaching MOSFETs to students for quite some time now, I came up with a different interpretation: the MOSFETs drain is the sink where the current from the load disappears into the transistor in order to again come out from the source into the circuit...
Always know what to tear apart Clive. I was just thinking of buying one and was very interested in tearing it apart myself. For curiosity purposes. Now I don’t have to lol. Awesome video Clive.
Last time I was this early "phasers were set to stun"
The title made me assume this was about a handheld fog machine.
I can't see any comments for it so:
The capacitor and resistor between the micro and pot is an easy way to do a basic ADC..
You toggle the IO pin's pull up/down resistors/internal logic and count how many cycles it takes for the pin to go high/low, this is the analog value.
It's not super accurate, but for something like this, plenty good enough and you can use a cheaper micro.
That's a good point. Microchip used to suggest that for early PICs.
*exciting action scene* -"OMG the Lager Lurgies are advancing! Set Phasers to st.... SQUIRT!"
I'm dissapointed, I was expecting an atomic powered molecular disintrigrator gun
That is remarkably well designed.
Just wanted to tell you with the shitshow of political discourse and lockdowns in my country, your videos have been a fantastic distraction and love the lessons learned.
Thanks you dont know how sane you kept me.
Very well explained and also the illustration helped alot..Good work my friend.Tqvm
For conventional current I always remembered that a MOSFET's drain is where the current drains into
"it's quite well made"... Sometimes I wished we could send back a thank-you note to the original electronics/mechanical engineers who took some pride in coming up with a careful design, which is even more amazing when we know the budget constraints these people need to meet, and also the need to optimize the speed of assembly.
Schottky in that position could be to allow the micro to be powered in isolation during production test (eg. for programming). Similar to how you use one in a PIC design to allow the programming lead to power the micro without back-feeding the whole circuit.
I quite like the Mosfet supported switch idea, sure it's additional cost but switches for high load currents can become pricey anyways
The diode after the regulator might be an alternative to a resistor or inductor.
May 'good' supplies would rectify and smooth, then a small drop in voltage, followed by another capacitor., so it may be belt and braces against motor interference.
Love that circuit! Gives me an idea how to indicate if I am overloading my motor on another project.
It's common to add a Schottky for reverse polarity connection (with low Vf) on the regulator, usually on the input, but hey-ho, it works where it is, too!
in some ways I'm glad that youtube doesn't have smell-o-vision
That's especially salient when it comes to channels like Drain Addict.
God knows what lives in that beard
Motorised spray bottle, a solution looking for a use.
I think the more interesting thing in this video is the label from the cleaner...
Usually only food and drugs are labeled with ingredients, except for proprietary mixes.
Here in the US most cleaners you can only tell the formula by smell, some say "ammonia free"(but that's one of the more distinct smells already), and there are many off-brand copies of each.
The majority don't have any kind of labeling outside of branding and the warning saying to wash it off and call poison control.
The Co-op puts ingredient lists on most items including beer and wine.
I predicted a diaphragm, that's a pint you owe me.
I know that could be some additional work, but also having the values for the small nF capacitors would be great for understanding the general scheme.😊
Typically a decoupling capacitor will be around 100nF. The only way to test them would be to remove them from the PCB. Any manual soldering of multilayer capacitors poses a risk of fracturing them.
@@bigclivedotcom Ok, so from your answer, I assume that some SMD capacitors have no label on them. I have very few experience with SMD components.
@@RobertoColi The capacitors don't tend to have a printed value like the resistors. I'm not sure why.
The data sheet for a 7805 regulator suggests 1 uf on the input and 0.1 uf on the output, but there is very wide latitude in what will work. As Clive points out, 100 nf, which is 0.1 uf, is very common as a bypass capacitor.
The other way to think about likely values is to consider those 10K resistor / capacitor values as low pass filters (they are), and decide what frequency you want as a cutoff frequency. You can then calculate the capacitor size. For instance a 100 nf cap will have a corner frequency of 160 Hz, which might be a little higher than you want to filter motor cogging.
A 1 uf cap would have a corner frequency of 16 Hz, which would be lower than necessary, so you might pick something like a 0.47 uF cap. But 1 uf might be cheaper than 0.47 uf, so you might instead pick the larger cap. A lot of this sort of engineering is to calculate the ideal part value, then value engineer by finding the cheapest part that is "close enough".
EDTA is an exceptionally versatile chemical.
I would think that the current shunt feedback to the micro might be for motor speed control feedback for maintaining motor speed.
I use good old household vinegar for de-scaling? both my shower and coffee machine. For the tougher deposits I soak kitchen paper in the vinegar and place it over the area that needs "treatment". Leave it for an hour or two and rinse with water.
me too, i just spray my bathtub and let it sit for 15mins before scrubbing. it makes alot of hydrogen gas? you can always hear the calcium sizzing. also i put my shower head into a little bag with vinegar in it.
my water is very very hard and its almost undrinkable. anything scale over and clog up in about 3months. its also full of SO4? sulfur gas.
@@Francois_Dupont The gas produced is carbon dioxide. Vinegar (acetic acid) and limescale (calcium carbonate) react to form calcium acetate and carbon dioxide.
@@PlutoniumJesus ahhh, thank you very much. no danger of explosion then!
Can’t use vinegar with natural stones. A kitchen countertop could be granite.
This Sanitation thing has opened and started a whole industry.
And ended 100s
@@conor20118 Yes Sir. The Closures have only added to the Death Toll. People are putting off life saving measure because of it. Little announces are being allowed to fester into major issues.
@@pulesjet stopping the spread of covid in inessential shops is dreading covid ?
@@pulesjet oh wait are you from the UK ?
@@conor20118 No but called it home for 5 years in the military. I Left friends and family behind when I departed. Married a Irish girl. That terminated when she figured out she had had enough fun.
Fill it with "party distillate" and let the fun begin. The BudBlaster 6000. "Set the dial to 11, you're in heaven"
I do wish people didn't use "USB" connectors to feed 12v - it's all too easy to grab the wrong cable and wave goodbye to one's sensitive bits :-(
or 20V Fast chargers lucky it was only a charge meter that got hit.
Looks to be USB in to 12v 2.5mm coaxial with a buck boost converter inside the usb side of the cable.
Don't get me wrong, adults can do whatever they want in the privacy of their own home, but why are you hooking USB cables to your "sensitive bits"?
Don't plug electric things into your sensitive bits!
@@zebo-the-fat and don't plug your sensitive bits into your electric things!
At first glance, I misread: “Inside a USB rechargeable optimizer gun.”
I was a little confused.
They should've used a Peristaltic Liquid Pump with Silicone Tubing.
Its the way to go for moving liquids, without exposing any parts to the said liquid.
Diaphragm pumps have been a thing for quite some time. Most Small engine carbs use them. They don't live long.
@Dave Micolichek Ethanol destroys them.
@Dave Micolichek Non Ethanol is unobtainum here. 10% is best you can do at the pump. Other options are high priced can fuels mail ordered or off the shelf if you can find it. White gas is obtainable across the dotted line in Mexico.
@Dave Micolichek lol, I live in the desert sw of New Mexico. Closest lake is 75 miles. They have no place to buy gas. Here they would rather you use electric.
@@pulesjet In Canada, the highest grade of gasoline is alcohol-free, but since most of the pumps only have one hose, you need to either wait for someone else to get premium, or buy a few litres to empty the hose.
We were all hoping for Piston and Flaps, the seedy crime fighting duo.
good ol clive, i live for these videos :) keep em coming :)
"I'm going to have to clean this mess"
That's what she said.
That's a very neat pump i wonder what's the exact part number and whether it can be bought on aliexpress.
I know there are membrane pumps but this one seems to be built much better.
Please do a teardown and explanation on the SoftStartRV, just saw a video where they start a 15000 btu AC unit from 15A only;
Nice explanation.
With different actuation (air pulses) the same sort of pump is built into many outdoor power equipment carburetors, for string trimmers and the like.
I think the 'atomizer'is cheaper if you just want the pump.... 8-)
@@pwkoert6594 Oh, almost certainly. I can't imagine the "paper" diaphragm most carburetors use would hold up terribly well to aqueous fluids either.
I still cannot figure out how the middle pin of the mosfet is soldered! It should be the gate pin, probably. Do you use the back of the package for that? Then why is there a middle pin?
The middle pin is generally connected to the tab. In many SMD styles the middle bin is cut short so the two side pins can have bigger solder pads. The middle bin is rarely the gate.
It's much more than just a descaling agent, we use EDTA in biomedicine as well, to scavenge for calcium ions among other things, it's like sodium citrate's meaner brother.
An atomizer takes whatever fluid you put into it and turns it into a fine mist.. basically breaks it down into even smaller molecules for things you want very finely covered or coated.
The usb charger is named “gift” as a reminder for what they need to mark on the customs forum.
How does this guy know so many details about so wide a variety of devices?
Maybe the diode behind the 7805 is there to prevent frying the 7805 from backfeeding it from the capacitors on power off. Normally the diode goes from the output to the input.
Modify the nozzel and do a little arts and crafts and you've got a handy and cool electric squirtgun for the pool side warfare...
It can be loosened to make it fire a jet.
@@bigclivedotcom yessssss!
Put some vinegar in it for your chips and fish for dinner 🍟
And it's great for cleaning up afterwards too...
Vinegar makes a wonderful all-purpose surface cleaner...
We had one just like this. Same problem. fixed it by cleaning the spray tip outlet. Now fogs properly
I love the words Spudger and Spudge.
When I saw the drawing I thought "a generation ago that would have had a rheostat, a push button and not much else".
Idea for a new youtube video Clive - no one has done a full comparison yet as far as i can see on youtube!
I have never used an oscilloscope just getting into electronics and ready to go more in depth.
Have seen the pocket oscilloscopes but would be nice to see a head to head of all 4 after seeing Diodegonewild youtube of the DSO188!
DSO138 vs DSO150 vs DSO188 vs DSO068 would be interesting.
I have a pocket scope here which I bought after seeing an enthusiastic paid review. It's extremely frustrating to use due to the menu system and ease of changing a wrong setting. It's notable that the person who did that review has never used it in one of their videos since.
Suggested for the BigClive teespring page: "Let's Spudge It!"
just a note... the rubber tube with brading is so called pneumatic muscle...
Looks useful for hosing down the inside of a mouldy shed with bleach cos someone cocked up and caused said shed to be pretty airtight and damp like I did with mine, that was a nasty mess to clean up... :P
I'm pretty sure they use the shut current measurements in soft-starting the motor.
If I can do it, so can they.
I have one and it's not pouring water, what's the problem?👍🇧🇷
My floor fan has the opposite setting, it starts from a very low speed and scale up. There's a trimpot for offset adjustment, though.
If the seals and hoses work with isopropyl alcohol, I think it would be good for washing flux from a pcb or spraying 99% iso on a pcb fresh from the ultrasonic cleaner to drive the water out and help it evaporate without leaving residue behind:)
That would also be a flamethrower.
@@bigclivedotcom oh your so devilish bigclive
Now let's see that thing throw some flames
@@mickward2775 You'll need to wait for Saturday BigCliveLive.
Would be interesting to see how much DC current the circuit (motor) draws when switching on. just to understand why a MOSFET is used to support the on/off switch.
Hi Clive you ever thought of doing a test/teardown of the Brennenstuhl energy meter 4 way gang socket. be interested to see what you think of it
Wonder why they went with an external charging circuit? Seems like it would be more convenient and cheaper construction to just have a USB input on the gun itself and have that circuit board internal. The way it is now, what's to stop you from accidentally plugging something else (like a 'normal' 12v power supply) into the barrel plug, potentially overcharging the lithium cells?
They probably switched from an external 12V charger to the USB one because it was much cheaper and divulged them of the liability associated with cheap mains powered chargers.
The circuit design was a total overkill. Probably from some junior engineers who want to do some exercises with MCU.
Wouldn't the current sense resistors more likely be sensing lower current draw as in when the bottle is empty the pump will be drawing less current (due to no load) and will stop the pump running when there is no liquid? Although it could be doing both high and low current shut off.
I wonder if the power supply negotiates a higer voltage as in the QC "Quick Charge" spec. Otherwise, you might plug that USB cable into another USB device expecting 5V and POOF!
Did that spray bottle say SUITABLE FOR VEGANS???
Bought one of these that worked for about two hours and then wouldn’t run unless the charger was plugged into it. Took it apart and found cold solder joints on the wires soldered to the stack of three batteries.
Piezoelectric circuitry at the nozzle ? From what i can see, there is something there powered from the trigger PCB. To the left of where there's room for something that appears missing
Just LEDs.
@@bigclivedotcom ah I see, just a cheap-fancy squirter. For... a wet breeze on a hot day ?
Great video! Just wondering how the heating (to create a fog) is done if there's any? Otherwise it should just be a sprayer?
No heating. Just a wobble plate liquid pump.
Thanks Clive.
On Star Trek the Kardashians (or some beings from some planet) “Atomized” 1 of the Enterprise’s sacrificial security guys when the Kirk/Bones/Spock team beamed-down to the planet.
...it wasn’t a pretty sight, and guts turned inside out, exploded everywhere.
Anyways, I’m ordering 2.
Um
My lady has been complaining about not having much strength in her hands. Ordered what I think is the same unit for her to try out for those bigger jobs. What sorts of cleaning agents do you think would cause trouble inside this thing?
That design makes me want to play with an arduino and a mosfet and some of the small motors I have kicking around here... :-)
It should work with most kitchen surface style cleaners.
Hellow, I bought my atomizer 1 month ago, and in one ocation I charge the atomizer with another charger, and more later I tried to charge with the original charger, but the problem is that when I disconnect the charger from the atomizer, this doesn't charge, I have to conmect to the stream to make function. ¿What can I do?
1,8 grams of pure bac for 100 grams of liquid is A LOT. 2 grams for 1000 grams (1 liter) is safe.
The controller is (hopefully) also looking for motor overloads due to a clogged nozzle causing excessive pressure buildup in the pump and armored hose...
Is it really 11th generation charging? and do the 800ml bottles have a net weight of 7kg as per the advert? and importantly does it really stop So2 and Pvc gas being created from water?as per the literature on ebay surely the blue LEDs will protect us, by a more complete disenfection! thank god it has built in battery so its not limited by distance.....All this for between 28 and 78 dollars....I can see better uses for this when the price drops after the pandemic... like touching up creasote on the garden fence panels....Thanks BigClive
So my silly question is I have a set of low voltage fairy lights with a three AA timer pack. I have quite a few of these timer packs at my disposal and I'd hope to do a UV LED and glow resin project. Unfortunately much to my chagrin upon finally getting around to measure the voltage output to the leads of these timer battery packs I come to find that they are only putting out 0.020 volts at the lead wires for the OEM fairy lights. Long story short am I missing something or is there anyway that I might be able to continue with my intended project utilizing these packs or do I need to find a new avenue for powering my UV LEDs?
20mV is 0V for most purposes, have you checked the timer, batteries and any connections?
Maybe the lights are pulling down the voltage, or need to be connected if they're not already.
Even if they're not suitable, then it could be pretty simple to put something together, I imagine you should be able to find timer boards somewhere, battery packs are widely available. A microcontroller and an RTC module would work for a timer, and you could program sequences into it, if you like that sort of thing.
Could This Just Be Used With Plain Water, Was Thinking it Would Be a Good Choice Instead of The Hand Pump....
MANY Thanks
I Have Giant Land Snails, You See.....
Of course it will work with water.
I think it was originally intended for water.
@Peter B Great story :) Upper Heyford/Bicester me thinks? but theres loads so i am happy to be wrong.
@Peter B BRILLIANT!!!!
MANY Thanks For Sharing That!
@@bigclivedotcom FAB!
It's Now on My Christmas List as a Hand Pumping Sprayer is Getting To Much Now, I Have Fibromaylgia.....
Maybe the diode has something to do with lowering the max analog voltage that can come from the pot. Only thing that is immediately obvious.
How does this differ from the atomizer II that I have? It has stopped spraying and after disassembly I’m not sure the hoses are connected correctly. Seems like air is blowing back in bottle.
It sounds like the pump may be round the wrong way or a one way valve has failed. Check the output nozzle is clear.
supe- soker
It could be adapted to that.
Seems more like a motorized water gun.
So my atomizer spray isn’t sucking up liquid from the hose and instead blows air through it (producing bubbles in the liquid). Any idea how I can fix this? I can still feel the air coming out the nozzle just not the liquid.
Check the pipe is intact all the way from the liquid to the back of the pump.
No-touch atomized whisky shot dispenser
So at what point does it become a sprayer? That thing isn't atomizing (misting), it's spraying?? 🤷♀️
its not really atomizing the liquid. Which is what i was looking for. But do you think this gadget will work with insecticide? I need it to spray my house's interior for mosquitoes, ants and roaches. I dont know if the insecticide will mess up the pump and the gaskets.
I'm not sure if the insecticide will react with the materials.
has the sound of a cheap air compressor or maybe a battery powered sprayer (paint?)
*super*
And of course it's fitted with LEDs to clean in the dark...🤔
Nice water pistol
Please help ..
I don’t know how to contact you directly . I’m kind of overwhelmed looking on the internet.
I’m looking for a “cheap!” Fully build circuit board to take 6 pulses in and produce 4 pulses out. And if I could swap it the other way around too (4in -6out) as well, that would be cool or a second board . I’m trying to make a Petrol Rev counter from a 4 cylinder car talk to a 6 cylinder engine . (12volt)
Are the two 0.33 ohm resisters in parallel limiting the current to the motor or just current sense?. I don’t see another path for the motor to source power other than through the 10k pull down resistor
They appear to be for current sensing, but will also limit peak current slightly.
i might get one of these one day fun to play with lol