**AliExpress Product Review**

I recently explored various products on AliExpress and wanted to share my experience with you. In this article, I'll review six different items, including a display screen, signal boosters, and a handheld digital oscilloscope.

**Display Screen with Raspberry Pi Compatibility**

One of the first products I tested was a display screen that can be used with a Raspberry Pi as the video source. While it's not perfect, I found that adjusting settings in the Raspberry Pi OS can help make it work. However, if you're looking for other display sizes, I recommend checking out the seller who offers a wide variety of options.

**Signal Boosters - Do They Work?**

Next, I tested two signal boosters that claim to improve reception by attaching them to the backside of your phone. According to their product descriptions, they work like having a 4ft antenna attached to your phone. While it's possible that placing a resonance circuit near an oscillator can improve power transmission or reception, my test results showed no noticeable difference in signal strength or download/upload speed.

**Handheld Digital Oscilloscope**

The last product I reviewed was a handheld digital oscilloscope available for around 20€. An oscilloscope is a super handy tool when making electronics circuits, and this mini version is an affordable option. I tested it with my function generator and found that it worked pretty well, with clear display, auto-function, and adjustable parameters.

**Conclusion**

While some of the products I reviewed didn't quite live up to their claims, others showed promise. The handheld digital oscilloscope, for example, was a great value for 20€ and would be perfect for beginners. If you're looking for affordable electronics tools or interesting gadgets, AliExpress is definitely worth exploring.

**Recommendations**

* For the display screen with Raspberry Pi compatibility, try adjusting settings in the Raspberry Pi OS.

* For signal boosters, they might not work as claimed, so proceed with caution.

* The handheld digital oscilloscope is a great value for beginners and hobbyists.

I hope you found this review helpful! If you have any questions or would like to share your experiences with AliExpress products, please feel free to comment below. Don't forget to like, share, subscribe, and hit the notification bell to stay up-to-date on my latest content.

WEBVTTKind: captionsLanguage: enWould you believe that this product right here, that only  costs around 4€, comes with NASA technology.Well, I couldn't and that is why this video  series exists in which I take interesting or weird looking products from AliExpress and properly test  them in order to ultimately tell you whether you should check them out or stay away from them. And today I got 6 more intriguing looking products to check out. So let's not waste anymore time and let's get started!This video is sponsored by Displate and fun fact; I had their metal posters hanging in my house  before they offered to sponsor this video. And if you are completely confused right now then let me  quickly summarize that Displate makes unique and amazing quality metal posters that you can mount  to your wall in just 20 seconds if you are quick. And best off, you need no power tools at all,  this system uses magnets instead. Now when it comes to designs then I think Displate offers  something for everyone. My favorites though are of course electronics designs and memes  and if you want to see my favorite picks then check out my creators page. If all of  that sounds like your cup of tea, then simply use my link below in the video description and  get automatically access to my discount which with up to 33% is definitely pretty sweet. Now let's start off with the NASA technology product and without testing anything;  I would already not recommend it.The reason is that it gets  advertised as an antifreeze snow removal instrument for your car which initially  sounded and looked very interesting.But then I read through the description  and realized that they are using science BS language; talking about that the electromagnetic  energy in the composite frequency band can effectively affect the ice and snow;....sure. And of course it does all of that without any batteries, only solar power. So I was very skeptical once the product arrived and immediately noticed that they  changed the original packaging shown here to this, which revealed that it  is only an air freshener for your car.So yeah; as an air freshener it does work  and the solar panel on top actually powers a small motor inside that spins this contraption  to probably better spread the smell.But needless to say I truly despise  this misleading product description.With that being said let's move on to  a hopefully useful product; with this Mini GPS tracker that you can get for around 9€. Now sadly the production description does not exactly tell you how to use it;  but thankfully there was a small manual included that answered pretty much all questions. So to use this thing I firstly stole a working SIM Card from my home security system,  disabled the pin activation and then plugged it into the tracker. The now red blinking LED means that this thing got powered successfully and only at this point  you are by the way able to charge this thing.But anyway; to communicate with it you simply have  to send an SMS with a specific series of numbers like 000 to bind with the GPS tracker or 777 to  get the GPS location which indoors was absolutely not accurate with deviations of around 3km.And when going outside with this thing you would expect the accuracy to get better; but nope;  still totally inaccurate GPS position.I only got this accuracy to improve while  activating live tracking, in which the trackers gives you a username and password for a Chinese  website where you can then see the position of the tracker updated up to every 10 seconds. Here the accuracy never got better than 500m though and needless to  say this mode was also a bit scary.But it gets even worse when you realize  that you can call this thing and then listen to the sounds around it to basically spy on  people which in my test actually did work.And if actively listening is not your thing,  then you can also insert a Micro SD Card to save sound recordings on there  which did also work just fine in my test.So yeah this thing feels more like a spy bug  than a GPS tracker whose accuracy is probably this bad because of this little GPS antenna. Combine that with the fact that this circuit requires quite a bit of current from its small  internal battery; meaning it will not last for very long, and I got to summarize that I feel like  there is more negative points than positive ones.But if you still decide to get one anyway  then please do not use this thing for spying on people; thank you. And that bring us to the next product which is this UV Resin glue with UV light combined  that you can get for around 7€.And I know that glue is not the  most exciting topic; but believe me when I say that when it comes to building stuff;  you use glue more often than you think.In my case I always use hot glue for weaker  bonds that I can then use fairly quickly and this 2 component adhesive when I need really strong  bonds; but that one takes a full day to dry.So I hope with this UV glue I can strike a  better balance between bond strength and dry time.So for a first test I simply inserted a battery  into the included UV lamp, poured some glue on a piece of paper and put the light on it. And super quickly within a minute this stuff was completely hardened;  pretty good start I would say.But after using it on a proper  3D printed part, I started to realized that the bond strength might not be what I was looking for. So for a more scientific test I next 3D printed some test pieces out of PETG and PLA filament,  used all 3 of my different glues to connect them together and then repeated this process  for some wood and metal test pieces as well.As soon as all the glues were then dry; I clamped  the pieces to my workbench one after the other and pulled on the other side with a hanging scale to  find out at which point the glue bond breaks.And I got to say that I was not able to  break the two component adhesive since I could not apply more than 30kg of force. Except for the metal test piece that required around 10kg. But that is still a good result considering that the hot glue bond broke with around 1kg. Other than that though, hot glue also performed surprisingly well since I  could not separate any of the other test pieces.And that means only the UV resin glue was left  and oh boy this stuff performed terribly in comparison; here is the final chart.One reason for is that the UV glue didn't dry properly on the inside since  apparently no UV light got there.That means for me though that I  will not use UV resign glue in the future.And that brings me to the fourth product which  is hopefully good and it is this 5.5inch OLED screen that you can get for rather expensive 78€. But wait a minute; in the last AliExpress video I also presented such a DIY screen kit  that was not only cheaper; but also bigger.And yes this bigger one also offers a nice  quality; but this small one supposedly comes OLED technology and a touchscreen. That would make it perfect for a raspberry pi project I had in mind for a while. So to test it I firstly hooked it up to my laptop and good news first the  touchscreen worked immediately, but the screen orientation was wrong. To fix that you can sadly not use buttons on the driver board. Instead you have to adjust the output settings of your video source which was pretty simple to do. At this point I noticed how much better the video quality of this small display was in  comparison to my laptop and the reason for that is that this screen truly uses OLED technology. And another thing I loved was that this screen only requires around 300mA at 5V. But on the other hand there were also some downsides, like that the screen is very thin  and thus delicate, the touchscreen apparently does not work on the upper and lower border  and this thing does not immediately work with a Raspberry Pi as the video source. Now I bet though there are settings we can adjust in the Raspberry Pi OS to get this display to  work; but for now it is kind of a mixed bag for me that I would ultimately still recommend. And if you are looking for other display sizes (like me) then definitely check out  the seller of my screen who offers a big and interesting variety. Ok and now that I found something good; lets move on to something a bit more  dubious with these two different kinds of signal boosters that you can get for around 2 to 3€. According to their product descriptions you simply put them on the backside of your phone  and badabom badabeng you have better reception.They are even saying that it is like having a 4ft  antenna attached to your phone which would look something like this; what the hell? But who knows, maybe it does work because sometimes placing a resonance  circuit near an oscillator can improve power transmission or maybe reception. So I tested my 4G download and upload speed and checked my phones signal strength before  attaching the two signal boosters right above the two antennas inside my phone. And to my surprise the signal strength improved a tiny bit; but after once again  doing lots of download and upload speed tests, the average was pretty much the same as before. I even checked with my tiny spectrum analyzer what the signal strength of the mainly used frequencies  were and once again there was no noticeable difference with or without the signal boosters. So according to my test results I can not really recommend them. And that brings us to the last product which is this handheld digital oscilloscope that  you can get for around 20€.Now in case you don't know;  an oscilloscope is a super handy tool when it comes to making electronics circuits;  only problem is that they are not really cheap.But with this mini version here, there is no  price excuse anymore to not have an oscilloscope and by the way I got the  cheapest version without battery or probes.To test it I firstly hooked it up to my  function generator and I got to say that it worked pretty well. I mean the display is clear, the auto function works great, you can adjust  pretty much all important parameters and the measurement feature also works fine,  except sometimes the frequency measurement.The only thing which was a bit cumbersome was  scrolling through all parameters with just one button and that  the smallest time per division value is 10us.That means frequencies above 200kHz can not get  inspected well with this scope; but hey that is still good enough for lots of beginner projects. So next I wanted to test single measurements meaning the scope only triggers one time  at a specific voltage value which the handheld scope did struggle a bit with;  but ultimately it somehow worked.So all in all the only big  disadvantage of the mini scope is that one probe input can be a bit limiting. Of course you also not get access to advanced measurement features, FFT,  decoding and a bit more.But let's be honest,  for 20€ you still get an awesome beginners scope that you can carefree use to learn the  basics of working with an oscilloscope.And since I really like the form factor  as well as the hardware quality; this one gets a definite thumbs up from me. And just like that we successfully covered 6 more interesting products from AliExpress  which for the first time I think got more thumbs down from me than thumbs up. But I hope you still got entertained and maybe found a hidden gem for yourself. If so don't forget to like, share, subscribe and hit the notification bell. Stay creative and I will see you next time.