I tried finding Hidden Gems on AliExpress AGAIN AGAIN!

[@amogusenjoyer]

Keep up with this series; the potential is immense. Just keep some randomness to what you test and buy, like you have been doing !

[@greatscottlab]

Thanks, will do!

[@BlueJDev]

Haha I see what you did there... Bet you couldn't RESIST yourself... Badumbumtisch

[@parshvapatel8484]

I wonder if there is a way to get gpio pins on your laptop as it would be cost affective solution for learning robotics try finding something similar .thx for your effort 👌

[@2231puppy]

@@parshvapatel8484 I think you can do that with nothing but a Raspberry Pi Pico and some firmware called u2if. Adafruit has a great guide on it.

[@TheRealStructurer]

He is doing us electronic tinkerers a great favor 👍🏻

[@TheRealSquirre1]

Whats real scary to me about the horrible battery casings on the gloves is how they're marketed for skiing. Skiing and snowboarding both tend to involve lots of hits to the arms where the batteries are mounted when you're falling since tucking and taking the slam is way safer than trying to catch yourself and breaking your wrist.

[@mckidney1]

If you are skiing and need gloves like this, then you are not skiing hard enough :) Still horrible marketing.

[@MrJob91]

Lipo batteries are not sticks of Dynamite. Crushing an enclosure can destroy or puncture a battery aswell. Lipo's can deform allot before shorting out and exploding in a spectacular fashion

[@jenda386]

I won't pretend to know what "tucking and taking the slam" might mean in the context of skiing, but be assured that you won't be breaking the cells no matter how hard you fall. They can take a 40 degree bend and still not ignite.

[@TheRealSquirre1]

@BansheeHero true but some of us got horrible circulation in our hands sadly. Few weeks back was hiking park on a snowboard in the high 30s, overheating bad enough to go shirtless but still rocking gloves. Gotta remember us snowboarders are knuckle draggers by nature lmao.

[@Loneman_OG]

❗It's not a bug; it's a feature! Hitting the battery pack very hard is how one would typically engage _"EXTREME Heat Mode"¹_ for those especially *_EXTREME_* low-temperature conditions. ¹ - Only for use in emergency situations. Short run-time. May result in the loss of fingers, hands, or limbs. The manufacturer bears no responsibility or liability for any form of loss, both personal and material. Use at own risk. 😂

[@MasterFX2000]

The PSF-B Module in the Wifi Relay is actually an ESP8285, so you can flash it with Tasmota and then use it without the cloud

[@greatscottlab]

Can you flash it over WiFi?

[@MasterFX2000]

@@greatscottlab It might work with toyaConvert (which basically emulates the cloud and uploads a custom firmware)

[@EDVDompteur]

@@greatscottlab Vor zwei-drei Jahren schnappte ich mal irgendwo in den Tiefen des Internets auf, dass es einen Trick gibt, um solche WiFi-Relays per Wifi zu flashen. Mit einem konkreten Link kann ich (ohne erneuter Recherche) nicht dienen, jedenfalls bestand der Trick darin, sozusagen als "man in the middle" sich in den darin implementierten Update-Prozess einzumauscheln, um auf diese Weise dem Ding eine eigene Firmware unterzujubeln. Das war schon etwas tricky, aber vielleicht gibt es dazu inzwischen fortgeschrittenere Methoden, die die Sache so halbwegs automatisiert erledigen. Einfach mal mit den Stichworten "man in the middle" und "ESP8285" (oder welcher ESP auch immer) recherchieren.

[@naveentechs]

@@greatscottlab you could use a FTDI/CP2102 serial converter to flash tasmota

[@LowOnGaming]

@@greatscottlab Unfortunately that depends on the current firmware, if they allow OTA file upload to upgrade then it might be possible, but otherwise it would require soldering some programming pins (or more likely finding the header) and hooking up a ESP-Prog (Just UART with additional control flow abuse for strapping pins really)

[@rklauco]

Btw, the Human Presence Radar can be bought in version B, that also has Bluetooth Low Energy output and works with Home Assistant BLE proxy :)

[@GogogoFolowMe]

Does it have the same PCB layout ? or is it a daughter board to a ESP82xx ? I don't seem to find 'em

[@Sabotage_Labs]

I'm using them with ESPHome BT proxy on ESP32. worms great and don't need to touch the YAML.

[@MrJoiny1]

Since 2015, I've had that fingerprint sensor installed on my front house door that has been working pretty well. Recently, I came across another fingerprint sensor, the FPC1020A, which caught my attention. Not only is it faster than my previous sensor, but it's also much slimmer in design. Additionally, I was impressed to hear that they claim to have a false rate of only 0.0001%. Overall, I'm excited about the potential benefits of upgrading to the FPC1020A and wanted to share my experience with others.

[@alexandrezani]

I don't know what your threat model is, but I want to note that because the sensor does the authentication, someone could remove the sensor and simulate an authentication signal. (Obviously, it's not a big deal for the average home owner, but just in case you happen to have reason to worry about more sophisticated attackers.)

[@mrfrenzy.]

Yes, there really should be encrypted communication between the sensor and the door controller inside your building.

[@elek101]

@@alexandrezani Most professional access systems use wiegand, which can also be easily attacked. Encrypted communication is rare.

[@alexandrezani]

@@elek101 Right, my point was less about encryption than about where authentication is performed. Wiegand systems will usually read your card and send the contents of the card to the controller which decides whether the card is valid. That is subject to a replay attack, but you need to know the content of the card. With the above fingerprint sensor, the sensor has a fingerprint database. It checks your fingerprint against its database and sends the user id of the authenticated user to the controller. Without knowing anything about the user's fingerprint, you can just send a user id to the controller. I think the user id is 32 bits and sequentially assigned in the database, so it's probably not very hard to guess it.

[@MiGujack3]

Someone didn't watch LockPickingLawyer

[@sysghost]

About that wifi relay: A warning: Do not replace your regular fuses with it. I've seen people do that with similar wifi relays as they think it's a drop-in replacement for said fuses. It is not no matter how much the manufacturer tries to advertise it as. You can however put it in series with your existing fuses.

[@nikolamladenoff3516]

I would never in my right mind replace my ABB circuit breakers with this chinese garbage lol

[@hoepsipoepsi]

Never use ANY chinese crappy unbranded electronics in general please...

[@Ed19601]

never use any crappy electronics even if branded and not from China. But do use great unbranded Chinese electronics

[@Ed19601]

Why would anyone replace a fuse with a relay? Totally different products

[@emilsberzins3155]

@@nikolamladenoff3516 LOL, thanks from ABB. This relay would be better suited as a control circuit relay. As in you use a NO or NC contactor and use this to control voltage to close or open these contacts.

[@veryboringname.]

If you ever use a fingerprint sensor with a smooth glass surface like that, always swipe across it as you remove your finger so you don't leave a perfect latent print behind.

[@Michael0100]

I was thinking this too, but as he said it didn't false trigger so, it must be of some decent quality.

[@veryboringname.]

@@Michael0100 It's not the false error rate, it's the equivalent of leaving a picture of your key on a door. It's possible to recreate a key or fingerprint with that info.

[@mos8541]

i normally use latent mucosa ... from a donor with different DNA also... which is ALL you peple.... SFMF

[@MatsMatsuo]

i mean, i sort of get it but if someone wants to get your fingerprint, it can be obtained very easily cause no one is actvely thinking 24/7 about all their fingerprints on everything they touch. For example, if I want your fingerprint, i can casually talk to you and ask you to hold something as a favor while i pretend to tie my shoe or whatever. Or i can just observe your routine from distance and take the fingerprint from anything you have touched. But yeah, i guess swiping is better than doing nothing at all

[@Electrically-Electronic]

I never thought that this kind of human presence sensor is available on the market. Thank you for that. Keep the good work up :D

[@greatscottlab]

Thanks, will do!

[@veryboringname.]

The Bluetooth version of that sensor is natively supported by Home Assistant over Bluetooth now too.

[@markglover2525]

One thing to watch out for with HPS is that - in my experience - they will swamp any WiFi kit in he beam path. I used one to detect people approaching my front door and trigger a dog-bark sound effect. It worked well, but it caused my video doorbell to go off-line whenever it was active.

[@GogogoFolowMe]

I kind of guessed such sensor should exist as I installed a rather recent automatic ceiling lamp in an inside corridor. This lamp had no visible sensor, and this fucker even turned on when I was coming from behind a wooden door before even moving it. I found that insane and guessed it was some kind of very sensitive acoustic or radio sensor.

[@veryboringname.]

@@GogogoFolowMe Lamps usually use a basic microwave sensor which have been around for quite a while. They're usually used in automatic sliding doors. They don't sense presence, just motion. At these prices it won't be long until lights start using presence sensors though!

[@ALph4cro]

Aliexpress is great for smaller things that you can't find locally or on some more popular stores. I ordered 2 M.2 ssds from Amazon, only to find out that I didn't have any screws to screw them into the motherboard. Everywhere I looked, I couldn't find those exact screws. Then I found them selling M.2 heatsinks for really cheap, and they came with the screws and a small screwdriver. That was a great deal for me since one of the SSDs didn't come with a heatsink, anyway. It cools the SSD almost as well as the one with the official heatsink. I was hesitant about buying from Aliexpress at first, but it's great for such things, just always take a closer look when you're buying something, because it isn't as well regulated as some bigger stores.

[@backgammonbacon]

M.2 SSD's use flat head M2.0 x 2.5mm or M2.2 x 3mm, should be found just about anywhere in the western world surely?

[@paulg3336]

I have bought more than 100 items from Aliexpress ,from a 3d printer to small items with very few problems. And those were due to the shipping rather than the vendor. I always look at the vendor's store ratings , the numbers of the item sold by that store and buyer's reviews. Those indicators are a fairly good guide to how your purchase with go.

[@ALph4cro]

@@backgammonbacon I tried looking for them, but couldn't find anything locally. Amazon has them but they are much more expensive when you include the delivery cost. I paid around 5 bucks for that heatsink, screws and screwdriver combo. I'd have to pay over 15 bucks just to get the screws and the screwdriver from Amazon.

[@conorstewart2214]

@@paulg3336 Yeah I buy most things from aliexpress now unless I need it fast in which case I will use a more local supplier. I have had a few issues with products not being as advertised or damaged and Aliexpress stepped in and gave me a refund for them, but for the most part everything is fine. The best tips are if it is something of value make sure the store has been around for a while and has good reviews or are a manufacturers own store. A lot of the cheap stuff you can get locally you can get even cheaper from aliexpress since there are companies that just buy that stuff in bulk from china and stick their logo on it and then charge a huge markup on it. Aliexpress vendors sometimes have local warehouses too. When I bought my 3D printer it would have been £30 to get it shipped from china or free shipping from their UK warehouse, I have bought filament from a UK warehouse too and it comes in a couple of days.

[@jessyterpoorten7197]

Just buy a screw repair kit fore glassen now you got all the little screws fore 10€

[@wezm]

I’d be curious how that fingerprint reader handles photos of your finger, gummi bear copy of finger, and pcb of finger print (these are all things people tried on TouchID when Apple debuted it).

[@tobias.s.keller]

Well actually that finger print reader works with a glass, so people leave their finger prints directly on the reader. Just need some quick glue fumes and tape to clone it.

[@Calthecool]

Can’t wait to see that fingerprint sensor integrated into a project!

[@greatscottlab]

Looking forward to it too. Should happen at the end of this year though.

[@junkice6930]

The thing about heated gloves/socks is they really don't need to reach 50C. Their purpose is really to keep your hands from getting super cold or frostbitten, so even if they keep the surfaces of your hands/feet at 5-10 C it's fine.

[@KaylaJoyGunn]

Yup

[@alexandrezani]

I mean, 37C would be really nice.

[@dh2032]

@@alexandrezani would that not be a bit to hot, your hand will start to sweat, and that not going to be very confatable?

[@alexandrezani]

@@dh2032 I think of it as an upper bound since it's a normal internal body temp.

[@junkice6930]

@@dh2032 It would, and that would make it even more dangerous in a cold situation. In general, sweat=cold, no matter how many layers you have on. If those socks, loose power, you're going to have colder feet than you would if you didn't have those socks at 37C in the first place.

[@brando12343]

i used the usb isolator in my car, i have a bluetooth receiver that i found picked up a ton of interference either from the usb adapter i was using or the cars electrical system itself, either way after plugging it in all the buzzing and hissing noises went away, i totally recommend it

[@CyrusHalcyon]

I appreciate that you don't buy intentionally misleading or daft products from Aliexpress, instead look for things you really want. I think its part of the reason for the higher then other youtubers hit rate on succesful products. Keep up the great content.

[@ristomatti]

I would go as far as to say the USB isolator board is highly recommended for beginners on the hobby. I nearly fried the USB port on my work laptop due to a small speck of solder causing a short on my very first protoboard Arduino project. Luckily the laptop had protection circuitry and it only powered off and stayed "dead" for some 15 minutes. I made several beginner mistakes but if I had one of these isolators back then, I could've avoided the momentary feeling of horror. :D

[@TheRainHarvester]

I did that too on an hp. It rang an alarm sound and shut down. Scared the beejeebers out of me!

[@ristomatti]

@@TheRainHarvester My ThinkPad just went dead in a fraction of a second. It was quite a surprise as I had the same board plugged in once already. The difference was that I had raised the Arduino input voltage from 9V to 12V (thinking it would be somehow better 😄).

[@winMANhun]

Wow, I actually really like this USB isolator, and I will definitely buy one. I'm repairing electric devices in bulk for bigger companies and I'm sometimes really worried about pluging in sketchy chinese repair devices to my notebook.

[@zyeborm]

I strongly recommend all embedded developers and similar have a few of them on hand for exactly that reason. I'd rather blow one of those up than the USB port.

[@winMANhun]

@@zyeborm Absolutely agree.

[@leverloos]

@@zyeborm or worse, the pc. Although I think it's unlikely to happen. But at a training course we were given these USB sticks you could put in the other way around, and it was smooth metal on 1 side. 1 guys laptop just turned off and wouldnt boot anymore after shorting the USB port.

[@ProtonOne11]

Analog actually has faster IC's too that support the full USB 2.0 480Mbit data rate. And i would definately want one with a better power isolator that manages the 500mA spec and where i actually know what isolation voltage it is rated for. For the electronics lab, i just ordered the EVAL-ADuM3165 from Analog. It's more pricy and bigger than the Aliexpress thingie, and it does not come with an isolated DC-DC converter, but for what i need it to do (usually isolate an USB link for monitoring a device while EMC testing with high voltage burst/surge/ESD) it's perfect.

[@JKnight89]

Always good to know good vs bad stuff on there. THANKS!

[@greatscottlab]

Glad to help

[@juanfra1997]

The usb isolation is useful for electronic beginners when they are creating arduino circuits so they don't burn their computer like it happened to me

[@boots7859]

So will a simply USB hub.

[@juanfra1997]

@@boots7859 no deepening of wich USB hub if you use a "simple" one it will not protect shit of your computer

[@munjee2]

Wait how did that happen, thats never happened to me, is it just random chance, or were you doing something specific?

[@rljzathras]

Don't need to be a beginner. Would have saved me hundreds just recently when I managed to electroplate my PC, router and a Raspberry Pi and of course 3D printer by accidentally bridging the 24V hotbed to 3d printer frame - connected over USB. Frame was NOT bonded to 0V electronics. Oh Galvanic isolation would be been OOH SO NICE. Sold in seconds - off to Aliexpress - a good time to use an affiliate link FOR SURE!

[@AstroSpark2]

I always love when you make a new episode in this series! Keep it up👍

[@greatscottlab]

Will do ;-)

[@WouterVerbruggen]

0:27 sharpening drill bits is nothing weird! That tool seems useful, getting the angle right can be tricky. To be fair though, if you're the kind of user that needs to sharpen his bits it would be very odd to not have a grindstone or band sander, and/or have trouble getting the angle right when grinding/sanding...

[@explodinglemur]

Can you trick the fingerprint reader with lifted prints?

[@gigiloscienziato]

I LOVE this series. I am eager to see what you will do with these products

[@spudhead169]

The problem with the self contained fingerprint readers is that they just send a confirm signal to the controller making them vulnerable. The reader can be removed from the installation and the wiring tapped. Any device like that should ALWAYS have two parts, an internal and external unit. The external unit just sends the raw data to the internal unit which then figures out if the data is good or not.

[@mabakalox2353]

raw data sounds not safe either, easy repeat attack, better approach is only internal unit which, ideally allows loading custom asymmetric keys, or at least manufacture trusted one for singing payload, that way any external unit might be used (like arduino) which needs to store only public part of key for signature checking and validating id of payload (repeat attack protection). And depending how paranoid are you, some tamper protection could be added to finger print sensor to prevent stealing of private part of the key.

[@spudhead169]

@@mabakalox2353 Over engineered solution. Repeat attacks are easy to defend against. For brute forcing you just introduce an enforced delay between scans. For data repeating, you hash the data from the sensor scan and keep a log of previously used hashes. Then just check to see if a scan produces the same hash as a previous attempt and if so reject it. Fingerprint scans should never be exactly identical. You could also use a simple GDO counter. Both units have a PSK the sensor encrypts its counter with the PSK and the lock decrypts it, then checks it's a value higher than the last successful scan. Data repeating would then not work and without knowing the PSK you can't manufacture a fake scan even if you have a dump of a successful scan. There's no need to go jumping into RSA.

[@naps1saps]

To be fair if the glove batteries each have its own charging BMS board, there is no issue with "parallel charging" because each battery is charging independently. The light on the charger might change when power draw is low/high indicating charge complete, disconnected or charging. My escooter charger does this.

[@neosenshi]

Another use for the USB isolator: Laptop USB port 0v is often referenced to earth. Since some equipment either needs to be floated from earth, or it is referenced between +v and earth, you want to isolate the USB port to prevent damage or shock hazards.

[@snik2pl]

Thats why you can unplug the laptop from supply

[@neosenshi]

@@snik2pl oh, agreed, but when you need to run multi-day data captures, the isolator makes a huge difference.

[@-MrDontCare-]

Great video, you show me things from AliExpress that I didn't know I needed. 😅This Human Presence Radar you showed, I need for some reason and has ordered a few of them. 4:38 For Skiing, looked like a totally different word for a dyslectic nerd like me 🤣

[@-MrDontCare-]

I got the Human presence device today, all I can say is, damn this thing works great true walls, wish I had this 40 years ago when playing hide and seek 😅

[@WernerBeroux]

For the gloves it really depends what the protection circuit does in that case. Given that the charger is very dumb it might be that one globe just charges the other one slowly

[@Huskyzeit]

I support that idea. To my understanding the protection board completely separates the power supply from the accumulator and takes charge of correct loading - everything will be save. I do not know if you could discharge the two accumulators parallel (in order to double the capacity), but that will not be the case with the gloves as they work on its own.

[@sandordugalin8951]

Literally the best series on KZbin right now. (For me.)

[@justbendev2324]

Something really interesting can be made with these fingerprint scanners that i couldn't find in commercial products (That don't cost a house payment) is centeralized fingerprint recognition. Basically instead of adding the fingerprint on each fingerprint sensor you take the hash of the fingerprint and send it to all your IOT with fingerprint scanner and add the hash to the Fingerprint sensor memory.

[@martinlabuda117]

It seems impossible to find a lot of products on aliexpress, and get good results with most of them. These results surprised me, keep up the awesome work.

[@greatscottlab]

Thank you! Will do

[@WaschBaer__]

a tip that i have found works wonders... select english language, and not your own language for the website... other languages get translated in a weird way.. from chinese/english-> english(if not already)-> to your language, i never find anything good if i select german but on english i can find mostly everything i am looking for

[@Skracken]

That relay module looks like it has an ESP controller. So it should be possible to reflash with ESPhome or Tasmota to use with home assistant

[@RamoArt]

As a normie I feel like people who have engineering/building tech skills are unstoppable. There is nothing you guys can't to.

[@TheEulerID]

A word of warning. Check your local electrical regulations before installing that DIN rail remote switching unit in a mains breakout panel. It would almost certainly not be legal to install one in a UK Consumer Unit as there are some fairly strict requirements, especially over unit testing in combination with other permanent wiring devices, which basically amounts to not mixing and matching from different suppliers.

[@ybaguide9263]

thank you bro you're the person that removed the boredom of doing documents i watch a lot of your videos while working

[@ttic24]

Enjoying these reviews, hope it will continue. The human presence radar review is very useful, thank you! If you want to go a bit in depth at growing in your smart greenhouse, you might be interested in NPK soil sensor (they come in various options, with fully loaded measuring pH, EC, temp., humidity, nitrogen, phosphorus and calcium). Been in my radar for a while, but seems a bit too steep to try it out

[@SimpleSaemple]

I would love to see this

[@Full_Throttle_no_Brakes]

Love the series. Keep coming. Danke! Just an observation, I think you made a mistake IMHO. Charging 2 batteries with the same nominal voltage in parallel is safe even if they have different SOC at the time of charging because once one battery is full, the charge will just keep going on the other. Also, if 2 batteries are connected in parallel, the battery with more juice will charge the other with less juice until they are equal. It would be dangerous IF one of the battery packs has a lower nominal voltage, which is not the case.

[@greatscottlab]

More to come! ;-)

[@orion310591RS]

2:51 - I think this is really useful for usb oscilloscopes, if something goes wrong, you will not kill laptop.

[@abuhafss1]

Your "LET"S GET STARTED" is as cute as always ! 😊

[@DiegoSynth]

Unfortunately nowadays with USB sound cards the 1st item is usually a must if you plan on recording audio, as most of both cheap and expensive cards do not isolate ground loops (a shame). Different was the case back in the day with good old PCI cards.

[@rcfreakamit]

Great summary, thanks! WRT WiFi relay - yes, the 'proprietary app' requirement is a deal killer for me, as with other cheap home automation components.

[@nareshmehndiratta]

your english speaking is very better than others people , congratulations

[@ddegn]

The "Human Presence Radar" is available for just a couple dollars if you don't include the USB board. Get one with the USB and then get extra sensors to use on your robots and other projects. I think it's a very promising sensor. Thanks for another fun and interesting video.

[@SapioiT]

I think the "slightly exaggerated" might be because they imply that human hands and feet are helping with the heating, slightly, when compared with no human hands/feet heating them.

[@bit2shift]

9:14 GreatScott knows his power requirements, that's some fine looking triphasic bus 🧐

[@buzdi_dop]

I bought exact same usb isolator, now i can finally power my bluetooth to aux module through home cinema itself. Thank you very much i love it

[@alek1004]

Miss the cool projects you did, can you bring them back? 🙃

[@ModItBetter]

5:30 isn't that the charging and protection chips on each battery? so you can use the adapter to charge them in parallel .??

[@ChristieNel]

This is a great series. I have a challenge for you. Combine all the products for the next episode into one system.

[@ugandanknuckles3429]

Maybe try some smart breakers from aliexpress. There are some that can measure power usage and can be toggled remotely. Seems useful but I'm a bit worried about the safety side of it

[@MayankJairaj]

Thanks to you and the viewer who recommended the USB isolator 🙏 I was searching for something like this since 2019!

[@Warfrog101]

I really appreciate the quality of the schematics you make.

[@MaxAndHisBike]

I've also order quite a lot of stuff from AliExpress and I can tell you flat out which things to order and which ones to stay away from. What you should order are 1) good "fakes" of common products. Like for example a phone mount for your bike or something like that, because there's a really good chance that the factory producing a brand name item is also producing the same item under no brand name and selling it on AliExpress. A good example of this are motorcycle/bycicle levers, I have bought ones which are exactly identical to brand name ones, except the brand name ones cost 150€ and the no name ones cost me 20€. 2) simple mass produced items. Stuff like microfibre towels, usb cables, food storage containers, basically anything that's not too complex and/or everyday products. What you should stay away from: Complicated products or products where safety or good quality is important. For example I wouldn't necessarily order a heated blanket, LED headlights for a car, boots & shoes, glasses, helmets, gloves, camera lenses, cameras in general, stuff like that. There of course is a chance that these products are very good but if they don't have a lot of reviews I wouldn't risk it.

[@ahmadhasan3258]

Scott: Don't skip this ad Me: YOU UNDERESTIMATE MY POWER!

[@calvinbrowne2126]

That human presence detector is already out of stock! Nice video btw.

[@greatscottlab]

Dammit. There should be more available on AliExpress though. Just search for it.

[@calvinbrowne2126]

There are others. Just want you to get referral credit 😉

[@mamidinaresh4053]

Thank you very much for showing us the product used inside and checking whether it works or not.

[@ivoryowl]

I like your handwriting, it's neat, consistent and easy to understand. :)

[@RomanoPRODUCTION]

00:39 that smile, incredible :)

[@AndrewTSq]

USB Isolator is great for synthesizers and audiocards. I had terrible usb-noise

[@lohikarhu734]

with isolated USB power, you could connect two of them in series for a 10 V output, since they are fully isolated... also, excellent for something like one of those USB interface 'scopes, or multimeters, et al, no Ground, so you could use the devices for power-line measurements with quite good safety factor...only thing, I don't see an actual VDE or similar isolation rating.

[@stevebabiak6997]

If the IC can’t get the safety agency approval, the entire device using it certainly won’t get that approval (I do not know for certain that the IC lacks approval - I am just guessing that it might not simply because of the spacing required to isolate mains voltages).

[@tomweickmann6414]

This channel is my new drug.😊 One thing though....keep your fingers away from Mack the Knife.

[@alexandredevert4935]

The USB isolator is a simple preventive measure to avoid frying a laptop when playing with MCUs, for such a low price that's a big insurance.

[@slappyrats]

Dude idk why KZbin stopped recommending your videos? I'm subscribed and love every video you put out lol. So glad I found you again! Love the video.

[@John_Ridley]

Charging both of the glove batteries at once isn't an issue, because they have protection circuitry inside them. You can put them in parallel, if one is low that one will simply discharge at a normal rate into the other one while the charger also contributes. For anyone considering these, Project Farm recently did a heated glove review, and after watching it I bought a pair off Amazon for $40 that are excellent, much better than a $200 pair that I had several years ago. The case style for these batteries is common. Even very expensive heated gloves also use shrink wrapped pouch cells. I've not had any trouble with them.

[@Serkuvel]

I like this series very much! I think it would be interesting to know whether those Chinese smart home devices require an internet connection or just a local network. I do not want my devices to turn into a paper weight or security risk, if the manufacturer screws up in the future.

[@DistinctGamer_]

The USB isolator looks really good for USB microphones, I wonder if anyone has done some more intensive testing on it

[@deluxeddelirium]

Would the gloves reach higher temperature readings while being worn? When I use those pocket warmer packets they warm up really well when kept close to any body part, but not so much on their own. Love the content!

[@johnrhodes3350]

Yes, these types of warming devices, measurably and subjectively perform better as you describe when in use next to the skin.

[@Sorrentino_Gianni]

6:57 Is this Everything Smart Home inspired? Great video!

[@greatscottlab]

Not really. Never heard of this channel. Thanks :-)

[@Sorrentino_Gianni]

@@greatscottlab go take a look, he published a really interesting combination of IR, radar, luxometer, temperature and humidity sensors based on ESPHome. He’s selling it, but I believe he also published the full code. Also he’s a great Home Assistant creator!

[@martinoptilon9915]

Thanks for sharing your tests, they are very useful.

[@johnsonlam]

And if you can modify those "garbage" and turn them into useful things, that really help! I think some of them just the circuit was bad or have minor flaw that can be fixed and good to have a pre-built product to tinkle with than build from scratch.

[@garydzidowski1134]

I am an electronics hobbyist who used to order a lot of items from China. Over the past few years I have found items getting more expensive, of poorer quality, or outright false advertising/bait and switch with the cheaper items being "unavailable". I now have stopped ordering from China, they are not the same as 5 years ago.

[@johnrhodes3350]

Their society is very narcissistic. They like to fake and scam. They enjoy getting one-over-on-you

[@kalenbogart4482]

This is a great series to break up the project videos. I like the rhythm it helps establish

[@recurveninja]

The item with the red arrow pointing at it at 0:28 is just a drill bit sharpening jig, nothing insane or even unusual about it. Drill bits are only sharp at the tip, so when they get dull you use a jig like that to ensure the correct angle when sharpening.

[@TheDaniel366Cobra]

Love those new fmcw radars. Longer ranged ones (50-200 m range) are still a bit pricey for now, but I am sure we'll soon see them become more accessible.

[@Geniusinventor]

I really like the idea of the fingerprint door lock 🔐 I wanted to try. I will look for a similar fingerprint model online thank you :3

[@Barracuda48082]

A challenging task re design the wheel . New style comms..invisible beam, containing origin, destination, arc angle data, bounce off atmosphere back to a calculated relay point on earth, then in a near instant from that point, transmit again toward the final destination using any bounce relay points available .

[@MikeVDS]

Randomly bumped into this video. Good stuff for any tech geek! Thank you!

[@Boogie_the_cat]

I'm really enjoying this series, as I don't have enough knowledge to be able to sift reliably through the mountains of hype/BS on AliExpress.

[@livestefan]

bruh this has to be my favourite series from greatscott ngl

[@greatscottlab]

Awesome! :-)

[@JonathanDeWitt1988]

I look forward to seeing that fingerprint reader in a project. I'd also be interested to see how you would incorporate the radar into a project.

[@Ouefdie]

The USB Isolator would be interesting for a USB Soundcard Oscilloscope, of course only for Audio applications, but could be a cheap way to get an oscilloscope.

[@H0mework]

You can just use the headphone jack anyway. Neither of them are very good oscilloscopes.

[@Ouefdie]

@@H0mework Well the 10V Peak to Peak of Eurorack wouldn't be good for the Jacks i reckon.

[@AsciiWolf]

The USB isolator is also a pretty useful thing for Software Defined Radios to eliminate the noise generated by your computer in received signal. 🙂

[@Slicerwizard]

200 mA isn't enough for most SDRs.

[@brian2k1]

I would love a video explaining how you isolate and transmit power from one side to the other.

[@greatscottlab]

A transformer is the solution :-)

[@jenslyn42]

Really enjoyed this, especially that each product is concisely presented so I can easily know if it might be for me

[@Mavi222]

These Ewelink products should also be able to be accessed by IP. You can implement them in Home Assistant just via IP, no need to use their own service. Not sure if you can do it without first setting up an account though.

[@Kalvinjj]

Great if you can do this, at least if it's not necessary later, then a throw-away account for 1st setup should be enough.

[@carlos76437]

Yep, you have IP access.

[@Wirmish]

I bought a Dune Buggy as a holiday gift to myself. I totally changed the dash using a fingerprint reader connected to a board integrating 4 relays. A single button replaces the acc, starter, trunk opening, and glove compartment. It's cleaner, more hi-tech, and I don't have any more keys to carry.

[@Suzuki_Hiakura]

The grinding attachment you pointed at in the intro is a tool sold at Harbor Freight. Not sure I would recommend it, but its fro sharpening your drill bits. Definitely recommend buying tools from stateside stores though, as the quality of some cant be guaranteed... recall some pictures of tools that broke apart due to being the wrong (cheaper) grade of steel...

[@ofiros1987]

I love this series of videos. You always manage to get me interested in more products on Ali that I never knew even existed. Love it Keep it up

[@a.caceres7465]

LOVE this series, pls keep going.

[@greatscottlab]

Sure :-)

[@dh66]

Subbed! Definitely trying out the fingerprint reader. I love that your voicing your videos in English as well, however at 11:40 when you say "worked" is sounds quite a lot like "broke", and I was confused until I replayed it a couple times. Great video! Keep them coming!

[@craigbrown348]

The reason the USB isolator slows down the link speed maybe because the cheap units also blocks negotiation for anything higher than USB 1.1, Used one in the past for this reason (long story)

[@DRAGUNOV1902]

This is amazing, it should be made into series! We want mooooarrr

[@m1ghtyboy]

So as someone with a USB microphone, would the USB isolator help me reduce noise?

[@leagueleaders]

I love these types of videos my friend! Keep this series going great work. That finger print reader is very cool idea

[@hr.differentmind2048]

someone said if you expect something from the person you helped, you're doing business, not kindness.

[@themonlight13]

3:50 it doesnt even require a usb-killer for that. A while back i bought a USB to IDE Adapter on Ebay from some chinese seller. Hooked it up to my old IDE-Drive i wanted to check out and the first thing it does was creating a bang, sparks and tripping my brakers. Turns out the provided power supply was faulty and sent 230V down to the drive, where it found places to bridge over to the IDE-Interface which then went into the adpater and from there via USB into my PC. Fortunatly it only broke the Data-Lanes on two USB-Ports on the motherboard and left the USB-Controller and everything else intact. Also the adapter catched fire for a short moment as some of the plastic housing melted in that very short time. I will definitly buy one of those if i really need to use another scetchy adapter for something - which i dont plan to use ever again if i dont need to.

[@jojo_glitching2970]

The breaker can be pretty scary. Because turning it off and on at least in America will wear down the switch inside and might prevent a trip in a circuit. Also 50 amps is what a stove is protected on.

[@LukeBillwalker86]

Deine Aussprache ist moderne Kunst. Respekt.

[@mjouwbuis]

@5:05 any potentially dangerous equalisation current is limited by the resistance of the wiring, without posing a danger. The difference between empty and fully charged is only 2V after all. That's about the most extreme use case and then only if the charger is not connected. That said, cell protection circuits are not charging circuits. Even if safe or safe-ish, you won't get maximal battery life.

[@nathanial7249]

Loving these AliExpress series! Gives me additional ideas on projects

[@Index-o1234]

Great series always looking for reliable online products that make life easier at an affordable price. Subscribed