I tried finding Hidden Gems on AliExpress AGAIN AGAIN!

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  • čas přidán 16. 05. 2024
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    Support me for more videos: www.patreon.com/GreatScott?ty=h
    You can find the featured products here: (affiliate links)
    USB Isolator: s.click.aliexpress.com/e/_DCM...
    Heated Gloves: s.click.aliexpress.com/e/_DCT...
    Heated Socks: s.click.aliexpress.com/e/_DCz...
    Human Presence Radar: s.click.aliexpress.com/e/_Den...
    WiFi Relay: s.click.aliexpress.com/e/_DEl...
    Fingerprint Reader: s.click.aliexpress.com/e/_DeY...
    In this video we will be having a closer look at 6 different products I got from Aliexpress. Aliexpress is famous for featuring the newest products/ICs when it comes to electronics but finding those can be a bit difficult. So I tried finding the hidden Gems not only electronics related but in general what I think could be useful. Let's get started!
    Websites which were shown/used during the video:
    www.analog.com/media/en/techn...
    qariya.net/product/optical-fi...
    de.aliexpress.com/item/100500...
    Thanks to Keysight for sponsoring this video.
    0:00 Intro
    1:35 USB Isolator
    4:11 Heated Gloves
    6:19 Heated Socks
    6:55 Human Presence Radar
    9:01 WiFi Relay
    10:27 Fingerprint Reader
    12:24 Verdict
  • Věda a technologie

Komentáře • 882

  • @amogusenjoyer
    @amogusenjoyer Před rokem +776

    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
      @greatscottlab  Před rokem +66

      Thanks, will do!

    • @BlueJDev
      @BlueJDev Před rokem +9

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

    • @parshvapatel8484
      @parshvapatel8484 Před rokem +3

      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
      @2231puppy Před rokem

      @@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
      @TheRealStructurer Před rokem +5

      He is doing us electronic tinkerers a great favor 👍🏻

  • @MasterFX2000
    @MasterFX2000 Před rokem +360

    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
      @greatscottlab  Před rokem +59

      Can you flash it over WiFi?

    • @MasterFX2000
      @MasterFX2000 Před rokem

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

    • @EDVDompteur
      @EDVDompteur Před rokem

      @@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
      @naveentechs Před rokem

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

    • @LowOnGaming
      @LowOnGaming Před rokem +62

      @@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)

  • @TheRealSquirre1
    @TheRealSquirre1 Před rokem +592

    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
      @mckidney1 Před rokem +39

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

    • @MrJob91
      @MrJob91 Před rokem +32

      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
      @jenda386 Před rokem +13

      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
      @TheRealSquirre1 Před rokem +7

      @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
      @Loneman_OG Před rokem +23

      ❗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.
      😂

  • @sysghost
    @sysghost Před rokem +36

    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
      @nikolamladenoff3516 Před rokem +2

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

    • @hoepsipoepsi
      @hoepsipoepsi Před rokem

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

  • @veryboringname.
    @veryboringname. Před rokem +71

    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
      @Michael0100 Před rokem +1

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

    • @veryboringname.
      @veryboringname. Před rokem +22

      @@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
      @mos8541 Před rokem +1

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

  • @rklauco
    @rklauco Před rokem +18

    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
      @GogogoFolowMe Před rokem

      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
      @Sabotage_Labs Před 7 měsíci

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

  • @Electrically-Electronic
    @Electrically-Electronic Před rokem +117

    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
      @greatscottlab  Před rokem +14

      Thanks, will do!

    • @veryboringname.
      @veryboringname. Před rokem +6

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

    • @markglover2525
      @markglover2525 Před rokem +2

      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
      @GogogoFolowMe Před rokem

      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.
      @veryboringname. Před rokem +2

      @@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!

  • @gigiloscienziato
    @gigiloscienziato Před rokem +6

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

  • @MrJoiny1
    @MrJoiny1 Před rokem +34

    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
      @alexandrezani Před rokem +4

      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.
      @mrfrenzy. Před rokem +1

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

    • @elek101
      @elek101 Před rokem

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

    • @alexandrezani
      @alexandrezani Před rokem +1

      @@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
      @MiGujack3 Před 6 měsíci

      Someone didn't watch LockPickingLawyer

  • @JKnight89
    @JKnight89 Před rokem +28

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

  • @wezm
    @wezm Před rokem +65

    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).

    • @tobiass.keller1510
      @tobiass.keller1510 Před rokem +3

      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.

  • @ALph4cro
    @ALph4cro Před rokem +28

    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
      @backgammonbacon Před rokem +6

      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
      @paulg3336 Před rokem +10

      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
      @ALph4cro Před rokem +4

      @@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
      @conorstewart2214 Před rokem

      @@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
      @jessyterpoorten7197 Před rokem +1

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

  • @tobias7581
    @tobias7581 Před rokem

    Amazing series! Thanks for the helpful inputs!! Keep going!

  • @-MrDontCare-
    @-MrDontCare- Před rokem +28

    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-
      @-MrDontCare- Před rokem

      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 😅

  • @Calthecool
    @Calthecool Před rokem +59

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

    • @greatscottlab
      @greatscottlab  Před rokem +16

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

  • @brando12343
    @brando12343 Před rokem +7

    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

  • @some1994
    @some1994 Před rokem +33

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

  • @thisguylovebananas
    @thisguylovebananas Před rokem

    I love this series!! appreciated your videos, love it!!

  • @explodinglemur
    @explodinglemur Před rokem +7

    Can you trick the fingerprint reader with lifted prints?

  • @rcfreakamit
    @rcfreakamit Před rokem +1

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

  • @jenslyn42
    @jenslyn42 Před rokem

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

  • @ristomatti
    @ristomatti Před rokem +11

    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
      @TheRainHarvester Před rokem +3

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

    • @ristomatti
      @ristomatti Před rokem +1

      @@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 😄).

  • @leagueleaders
    @leagueleaders Před rokem

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

  • @nathanial7249
    @nathanial7249 Před rokem

    Loving these AliExpress series! Gives me additional ideas on projects

  • @Tomyboy96
    @Tomyboy96 Před rokem

    Thanks for these videos, helped me finding new projects after watching through the whole playlist 👌🏼

  • @martinoptilon9915
    @martinoptilon9915 Před rokem +1

    Thanks for sharing your tests, they are very useful.

  • @MayankJairaj
    @MayankJairaj Před rokem

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

  • @naps1saps
    @naps1saps Před rokem +1

    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.

  • @ampere0124
    @ampere0124 Před rokem

    Nice video. Thank you.
    Pls. keep this series up.

  • @ttic24
    @ttic24 Před rokem +3

    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

  • @junkice6930
    @junkice6930 Před rokem +24

    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
      @KaylaJoyGunn Před rokem +2

      Yup

    • @alexandrezani
      @alexandrezani Před rokem +6

      I mean, 37C would be really nice.

    • @dh2032
      @dh2032 Před rokem +2

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

    • @alexandrezani
      @alexandrezani Před rokem

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

    • @junkice6930
      @junkice6930 Před rokem

      @@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.

  • @MickZeller
    @MickZeller Před rokem

    More of these videos, please! They're so good!!!

  • @pasjeihobby
    @pasjeihobby Před rokem

    I love this series. Keep it flowing man!

  • @ofiros1987
    @ofiros1987 Před rokem

    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

  • @winMANhun
    @winMANhun Před rokem +27

    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
      @zyeborm Před rokem +11

      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
      @winMANhun Před rokem +3

      @@zyeborm Absolutely agree.

    • @leverloos
      @leverloos Před rokem +2

      @@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
      @ProtonOne11 Před rokem +1

      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.

  • @CyrusHalcyon
    @CyrusHalcyon Před rokem

    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.

  • @vusiliyK
    @vusiliyK Před rokem

    These were great recommendations. I will definitely go buying the FP scanner and the radar module for future projects.

  • @ruftime
    @ruftime Před rokem

    Love this Series❤
    Greetings from SoCal!

  • @justbendev2324
    @justbendev2324 Před rokem +2

    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.

  • @TonyJewell0
    @TonyJewell0 Před rokem +1

    This is such a good series. Great content as ever.

  • @snaplash
    @snaplash Před rokem +16

    The radar sensor could look out through windows to detect people lurking outside, without having to install sensors on the outside of the building.

    • @GogogoFolowMe
      @GogogoFolowMe Před rokem +1

      Or presence behind a non-metalic door

    • @Sabotage_Labs
      @Sabotage_Labs Před 7 měsíci +1

      Dunno about that actually. Was testing in my garage and it lost me behind tinted vehicle windows and...the tint isn't very dark.

    • @ipodman1910
      @ipodman1910 Před 7 měsíci

      @@Sabotage_Labsit’s not about the darkness of the tint but about the fact that it contains metal…

    • @Sabotage_Labs
      @Sabotage_Labs Před 7 měsíci

      @@ipodman1910 So..some more testing.... if I'm on far side of vehicle it has a problem detecting through both driver and passenger window. But. Open passenger window and it trips both motion and occupancy. Interesting. So, maybe looking out a windows in a door or house window...maybe.

  • @katiekumcgil
    @katiekumcgil Před rokem

    those wifi breaker relays are awesome if you get good ones that have power monitoring circuits aswell the tuya ones work great with home assistant

  • @Warfrog101
    @Warfrog101 Před rokem

    I really appreciate the quality of the schematics you make.

  • @ybaguide9263
    @ybaguide9263 Před rokem

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

  • @ugandanknuckles3429
    @ugandanknuckles3429 Před rokem +2

    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

  • @t.n.1056
    @t.n.1056 Před rokem

    I like those kind (Hidden Gems) of videos, thanks for that !! Greetings from Germany.

  • @kalenbogart4482
    @kalenbogart4482 Před rokem

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

  • @KacktuskackeEntrtnmt
    @KacktuskackeEntrtnmt Před rokem +2

    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.

  • @MikeVDS
    @MikeVDS Před rokem +1

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

  • @sevakj0b
    @sevakj0b Před rokem

    Thanks for AliExpress videos, I like to see your HA setup in the future

  • @TheDaniel366Cobra
    @TheDaniel366Cobra Před rokem +1

    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.

  • @10lauset
    @10lauset Před rokem

    Neat stuff of hits and misses. More please. Cheers from Edmonton Alberta Canada.

  • @JLneonhug
    @JLneonhug Před rokem

    Love it, please keep doing more of these! :) Thank you

  • @JohnDeaux
    @JohnDeaux Před rokem +2

    Question about the glove batteries: wouldn't parallel charging only be a problem if the batteries themselves didn't have a charging ic like the tp4056? Looking at the video the power supply looks like a dumb switching supply for likely 5v, so it would only make sense to have a charging ic inside the battery itself. Could you clarify that?

    • @greatscottlab
      @greatscottlab  Před rokem +1

      Nope. The power supply is the charger. Outputs 8.4V at 1A max. The battery pack only came with a BMS

    • @JohnDeaux
      @JohnDeaux Před rokem +1

      @@greatscottlab thanks for clarifying. It's weird how china sometimes tries to save three cents and totally destroys the products value by doing so

  • @Geniusinventor
    @Geniusinventor Před rokem +1

    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

  • @mamidinaresh4053
    @mamidinaresh4053 Před rokem

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

  • @andymouse
    @andymouse Před rokem

    I LOVE this serious please keep it up...cheers.

  • @Barracuda48082
    @Barracuda48082 Před 11 měsíci

    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 .

  • @slappyrats
    @slappyrats Před rokem

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

  • @buzdi_dop
    @buzdi_dop Před rokem

    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

  • @spudhead169
    @spudhead169 Před rokem +6

    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
      @mabakalox2353 Před rokem +3

      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
      @spudhead169 Před rokem

      @@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.

  • @Boogie_the_cat
    @Boogie_the_cat Před 11 měsíci

    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.

  • @3DRC-707
    @3DRC-707 Před rokem

    Thanks dude! Always a pleasure when a Great Scott video drops.

  • @Skracken
    @Skracken Před rokem +3

    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

  • @jonathanmartins7744
    @jonathanmartins7744 Před rokem

    This series is awesome! Thank you for sharing

  • @Suzuki_Hiakura
    @Suzuki_Hiakura Před 6 měsíci

    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...

  • @johnhumbug5199
    @johnhumbug5199 Před rokem

    the recommendation for the human presence radar comes in handy, since i already ordered 4 of them before watching your vid

  • @andrashuszti1407
    @andrashuszti1407 Před rokem +1

    The usb isolator is good for GRBL CNC machines when the spindle causea drop of communication.
    Personally I added ethernet to my grbl sw which solves also the problem.

  • @duality4y
    @duality4y Před rokem

    would the usb isolator also be usefull for connecting say some big project to your pc like with a serial cable where the grounds don't always go through the same ground paths?

  • @BSK911
    @BSK911 Před rokem

    I really like this series, keep up the good work! 👍👍👍

  • @FakeMichau
    @FakeMichau Před rokem

    i was looking into getting usb islolator for quite some time now so finally decided to get one

  • @devicemodder
    @devicemodder Před rokem

    i have a USB isolator as well. although i use mine when messing about with mains voltage and an arduino. that way, if there's a short on the mains that sends 120V back down the USB, it won't kill my motherboard.
    Already had that happen once, and got lucky that it was just a port i killed.

  • @ChristieNel
    @ChristieNel Před rokem

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

  • @JonathanDeWitt1988
    @JonathanDeWitt1988 Před rokem +1

    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.

  • @DiegoSynth
    @DiegoSynth Před rokem +1

    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.

  • @christianacar2745
    @christianacar2745 Před rokem

    Please do a video for comparison of that fingerprint sensor with the capacitive one. Pros and Cons of both products. And which one is good for projects

  • @avri210984
    @avri210984 Před rokem

    Love the series.
    I'm looking for a soldering 🔬 can you recommend something from aliexpress?

  • @J00SD
    @J00SD Před rokem

    Nice vid! I was looking for a solution for my bluetooth adapter in my car since it has a battery and let's trough engine revving while it is connected for charging. Gonna give the USB isolator a try 👍

  • @sandordugalin8951
    @sandordugalin8951 Před rokem

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

  • @capsulate8642
    @capsulate8642 Před rokem

    Love this series, keep it up Scott!

  • @sgtfoose8842
    @sgtfoose8842 Před rokem

    Love your videos, thanks! I buy lot's of e-stuff from Ali as well, mainly for experimenting with Home Assistant. Please do some more useful stuff like gauges, valves, relays, sensors etc!

  • @duncan51
    @duncan51 Před rokem

    This series is awesome! Keep the reviews coming...

  • @showmethemoney824
    @showmethemoney824 Před rokem

    I stumbled across your channel and I must say it’s a great one. Do you have any diy for home assistant using Wi-Fi relay product specified in the list?

  • @denisdrozdoff2926
    @denisdrozdoff2926 Před 8 měsíci

    3kV is HBM static discharge that the board can handle
    2.5kV is what you've read in datasheet
    and 1.5kV is same as previous but includes PCB and power module*.
    *those modules don't like long term DC bias, but it'll save your PC from a HV fault on a USB device, by going up in smoke if anything.

  • @boris035..4
    @boris035..4 Před rokem

    I'm just enjoying your knowledge about electrics, it's so nice to watch you testing stuff out. Keep up with good work!!!

  • @wielku
    @wielku Před rokem

    That relay is really interesting, I didn't knew such things existed, great video and good premise.

  • @ivoryowl
    @ivoryowl Před rokem

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

  • @shotbyarian
    @shotbyarian Před rokem

    3:30 - i need something like this for a audio jack for my camera to get rid of static noise. is there a product like that around? thanks! great video!

  • @juanfra1997
    @juanfra1997 Před rokem +53

    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
      @boots7859 Před rokem +2

      So will a simply USB hub.

    • @juanfra1997
      @juanfra1997 Před rokem +10

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

    • @munjee2
      @munjee2 Před rokem +1

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

    • @rljzathras
      @rljzathras Před rokem

      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!

  • @dh66
    @dh66 Před rokem

    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!

  • @paulbenzley4549
    @paulbenzley4549 Před rokem

    Brilliant as usual !!! More ploease !!

  • @neosenshi
    @neosenshi Před rokem +4

    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
      @snik2pl Před rokem +1

      Thats why you can unplug the laptop from supply

    • @neosenshi
      @neosenshi Před rokem

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

  • @alexvdvelde
    @alexvdvelde Před rokem

    Once I ordered 10x LM350 adjustable voltage regulators.
    They worked verry wel on the meter. But as soon I connected a load (little motor or bike lamp) they stop working and do nothing anymore. I ordered I same regulator in my town and that's works fine for almost 3 years now.

  • @themonlight13
    @themonlight13 Před rokem

    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.

  • @a.caceres7465
    @a.caceres7465 Před rokem +1

    LOVE this series, pls keep going.

  • @ppheanix
    @ppheanix Před rokem

    Have you found a good sound (e.g. hand clap for ON and hand clap for OFF) activated relay circuit ?

  • @assassinlexx1993
    @assassinlexx1993 Před rokem

    The radar board is perfect for home security. As it works though a wall. Or door trim.
    If you don't see the device, you can't defeat the device. Try out tunable strain relief for stairs. On the underside.

  • @carlos76437
    @carlos76437 Před rokem +1

    Those ewelink relays were used in the building of the Dutch company were I worked at. And we're talking a small/medium industrial site. I actually fitted 3 of those at my house and I'm quite satisfied. The account allows for IP access.

    • @83hjf
      @83hjf Před rokem

      reflash it with ESPHome and forget about any "accounts"

  • @jmoya2001
    @jmoya2001 Před rokem

    I like this channel
    Do you have any safeguards in place incase a manufacturer's software is malware?

  • @KrK-EST
    @KrK-EST Před rokem

    1, 4 and 5 seems fine for me, aka that i might buy/need some day.
    Thought the 5th one, i probably would rebuild it to have my own digital board and secured communication on my own wireless types of communication.