#135

Рет қаралды 580,696

7 жыл бұрын

The invention of radar influenced the way World War two went because it was possible to detect planes of the enemy and shoot them down. And since then, this technology made civil aviation as we know it possible because it can detect the movement of metallic surfaces over distance. Of course, technology can also be used against us, for example, if we are trapped while speeding…
Links:
HW-MS03: bit.ly/2qffo0R
RCWL-0516 (Works also with 3.3 volts): www.aliexpress.com/item/RCWL-...
WB3-12: www.aliexpress.com/item/LED-M...
XYC-WB-D1: www.aliexpress.com/item/Micro...
HFS-DC06: www.aliexpress.com/item/5-8GH...
220V Switch (SK-600): bit.ly/2oGt8Sc
www.rogerclark.net/investigati...
github.com/jdesbonnet/RCWL-0516/
Supporting Material and Blog Page: www.sensorsiot.org
Github: www.github.com/sensorsiot
If you want to support the channel and buy from Banggood use this link to start your shopping: bit.ly/2jAQEf4 (no additional charges for you)
/ sensorsiot
/ spiessa

Пікірлер: 1 300

@AndreasSpiess 11 ай бұрын

As many commenters rightly found out, these devices are regenerative receivers. If you are interested in "real" radar sensors, I propose watching video #439

@andrewainger 3 ай бұрын

If these devices are regenerative RECEIVERS do they need a licence? After all, they do actually radiate! thanks

@AndreasSpiess 3 ай бұрын

@@andrewainger I do not think a license would help here. They are anyway illegal...

@voltlog 7 жыл бұрын

excellent comparison video, I can see allot of work went into making this.

@AndreasSpiess 7 жыл бұрын

Thanks!

@yorickhunt3371 6 жыл бұрын

Lucky for him that his neighbour works as a ground controller at the local airport, so he's an expert at flapping his arms around :-P

@KetilDuna 7 жыл бұрын

Mystery gadgets! Nice writeup. You have a very comfortable voice and clear, easy to understand diction. Good job!

@AndreasSpiess 7 жыл бұрын

Thanks!

@migoffmig 6 жыл бұрын

Ketil Duna , Really good diction, I'm from Russia and I understood all the information. Good work!

@dougmanatt4317 7 жыл бұрын

Thanks for checking out these various sensors. I think I will find them very useful and it is great to be able to rely on you to sort the features of the many choices available!

@AndreasSpiess 7 жыл бұрын

You are welcome!

@techydiy 6 жыл бұрын

Thanks Andreas, I always enjoy your videos.

@AndreasSpiess 6 жыл бұрын

You are welcome!

@dishendra. 5 жыл бұрын

Sir your videos are gold, it reflects how much work you put into these masterpiece review videos.

@AndreasSpiess 5 жыл бұрын

Thank you!

@PhG1961 7 жыл бұрын

I keep repeating myself... great video ! A very good comparison which is very usefull. It will defenately help me for choosing the right one. Thanks Andreas !

@AndreasSpiess 7 жыл бұрын

You are welcome!

@Dronebotworkshop 7 жыл бұрын

Thank you so much for doing this, prior to this video I was not aware of these cheap radar sensors (the rcwl-0516 is on eBay for about a dollar). As usual your testing was detailed and your explanation was perfect. Another excellent video!

@AndreasSpiess 7 жыл бұрын

Thank you for your nice words!

@adriangarulay5529 Жыл бұрын

Andreas , Thank you for your articulate understanding of this technology.

@AndreasSpiess Жыл бұрын

You are welcome!

@PaulJaros 5 жыл бұрын

Hi. I've recently discovered the RCWL-0516 and in search of more specifics I've then found your video.Your extensive tests are very helpful. Especially the needed voltage to run it, the diagnosis if the devices interfere with each other, the directionality and what they penetrate. Viele Grüsse aus dem Hackerspace Ruum42 aus der Ostschweiz.

@waltsteinchen 7 жыл бұрын

Today my RCWL-0516 's arrived from ali-express, could'nt wait to do some experiments .. (did'nt add any additional components) Wow .. these things are unbelievable sensitive especially moving to or away from them. Over the entire distance of my buro (~4 Meter) a movement of 2 cm's of my hand is enough to trigger it. Thanks a lot Andreas for making this great video!

@AndreasSpiess 7 жыл бұрын

You are right. Most of the time, I think, we have to reduce sensitivity rather than to try to increase it...

@richardroy6747 2 жыл бұрын

They are really too sensitive. I tried connecting one(rcwl-0516) to a nodered counter node via a 8266 microcontroller to detect the number of detections and found that even with nobody present in the apartment it is still detecting movement at times.I live in an apartment building so I assume it is detecting movement through the walls in the other apartments.I did not try to reduce the sensitivity yet. Has anybody tried it with resistors to reduce sensitivity?

@pagutierrezn 7 жыл бұрын

You continue to read my mind and post the videos just when I need them. Thanks

@AndreasSpiess 7 жыл бұрын

:-)

@Emtron_Technologies 7 жыл бұрын

Excellent comparison Andreas. I will be using in my future projects.

@AndreasSpiess 7 жыл бұрын

Thanks!

@3amali1 7 жыл бұрын

Excellent details. Thank you. It will be great if you can make a video on using those as metal detectors! Like detecting metal hidden underground or maybe behind a large lump of sand. Those treasure hunters will love the video :)

@AndreasSpiess 7 жыл бұрын

Thanks for the feedback. Maybe I will try it once...

@immortalsofar5314 4 жыл бұрын

Unless the ground is dry, wouldn't the moisture swamp the return signal?

@ulanbat0r 7 жыл бұрын

thank you for your effort. this was interesting AND useful!

@AndreasSpiess 7 жыл бұрын

Thanks!

@Absolutelyautomation 7 жыл бұрын

I discovered those modules recently, and still waiting for them to arrive. You saved me a lot of time, i don't have to make a comparative test. Thank you

@AndreasSpiess 7 жыл бұрын

You are welcome!

@samuelwels2524 7 жыл бұрын

Super Vergleich! :) Die Neugier auf die Module ist geweckt und alle wichtigen Fragen sind in einem Video beantwortet! Klasse Arbeit!

@AndreasSpiess 7 жыл бұрын

Danke!

@Peter_S_ 7 жыл бұрын

Perfect timing! I just received four RCWL-0516 units. I could not decide which variety to get and it appears randomness intervened to select a good choice for me. These evaluations of similar products are both interesting and useful. Thank you!

@AndreasSpiess 7 жыл бұрын

You are welcome!

@AbqMichaelMcDonald 4 жыл бұрын

I have been using RCWL-0516 Microwave Radar Sensors in a smart lighting application (integrated with ESP32 developer boards) for several months now. To this video I would add a couple notes. The first is that though the sensors do not interfere with each other, they can get false triggered from the ESP32. This effect falls off after a centimeter or two. Lesson learned, be careful mounting the sensors to the same circuit board as your controller. The lack of directionality and ability to penetrate wood is amazing and perfect for my application. The sensors often detect me just before I enter the rooms with my lights. My sensors appear to work through regular glass. I mounted some of my smart lights on my double pane window and the detectors see me from outside my house. My different experience may be explained by the sensors penetrating the wood but it may be that I’m using traditional glass and your video reported testing against acrylic glass. The later makes sense as acrylic would act more like water than silicate. A final note on voltages... Though it does take 5V to power the sensors, the sensor output voltage is 3.2-3.4V. This is perfect if you’re powering your circuit with a 5V supply and reading the signal with a CMOS device like the ESP32.

@AndreasSpiess 4 жыл бұрын

Thank you for your additions!

@atharavkarandikar5289 9 ай бұрын

Will it be able to detect u if ur are not moving or sleeping

@cooper6717 7 жыл бұрын

Awesome! I have been waiting for this video since you mentioned it in one of your mail bags, thanks for coming through with the usual great content.

@AndreasSpiess 7 жыл бұрын

Thanks!

@MaxintRD 7 жыл бұрын

Good video. I like how you compared these units and gave a clear overview of their main advantages. (Good to see I picked the right one when randomly ordering the cheapest radar-sensor I could find). Thanks!

@AndreasSpiess 7 жыл бұрын

You are welcome!

@edwardrf 7 жыл бұрын

First of all, great video! These motion detection radars most likely works in doppler mode, which is sensitive to frequency close to its emitting frequency, which explains why 2 of the same model do not interfere with each other, and why they don't detect stationary object.

@AndreasSpiess 7 жыл бұрын

You are probably right. There are a few ideas around in the comments. I do not know what is right or wrong...

@peternierop3241 7 жыл бұрын

Cool stuff. I might buy a few to play with

@AndreasSpiess 7 жыл бұрын

:-)

@francoisguyot9770 2 жыл бұрын

Thorough review that answered all my questions.

@AndreasSpiess 2 жыл бұрын

Thank you!

@ralfjahns3777 7 жыл бұрын

The long awaited radar sensor comparision you promised to do! You have not forgotten it! Now I know these devices work and which one to buy. Thank you so much!

@AndreasSpiess 7 жыл бұрын

You are welcome!

@paulhendrix8599 7 жыл бұрын

I don't usually like videos on request, but I had to make an exception.

@AndreasSpiess 7 жыл бұрын

Thanks for liking. I hope, I did not request it. I just know, that many people forget it..

@claudiog.7397 7 жыл бұрын

"of course the technology can also be used against us" LOL

@AndreasSpiess 7 жыл бұрын

:-)

@aka10gu 7 жыл бұрын

Excellent! Very professional and comprehensive. Saved me tons of work... and money! Thank you, Andreas. I'm looking forward to your next video.

@AndreasSpiess 7 жыл бұрын

Thank you for your feedback!

@szulewsk 3 жыл бұрын

Thank you for your thorough analysis of the devices. A fine video presentation of your results.

@AndreasSpiess 3 жыл бұрын

You are welcome!

@gandsnut 7 жыл бұрын

With outstanding content like this, it's really a crime that AS doesn't have 200,000 subs. Soon, I trust!

@AndreasSpiess 7 жыл бұрын

Thanks for the nice words!

@billybbob18 7 жыл бұрын

Are Jayem He's speaking to a specialized group with this subject matter. He is very good at what he does, but there are not many who have an interest in sensors.

@gandsnut 7 жыл бұрын

Besides the particular topic (sensors) - which is gaining traction with many makers and electronics diy hobbyists - I find a good number of our host's presentations balanced, informative and accessible, and creatively interesting. By doing this, what would be specialized subject is delivered for a wider audience to ponder and spark ideas.

@billybbob18 7 жыл бұрын

Are Jayem I definitely agree with you.

@raymondvanrykel3384 6 жыл бұрын

Andreas, The working principle of these type of radars (radio detection and ranging) is well understood and used in many applications already for many years. In a nutshell: These radars typically work in the L to X band : 1GHz-12.5GHz They are frequency modulated continuous waves radars typically with linear frequency sweeps, say 100Mhz Example: a saw tooth frequency of 100kHz changes the frequency linearly from 2.4GHz to 2.5GHz in 10 microseconds The transmitted signal is sent into the world via the antenna The received signal that bounced back from an object on a distance d from the antenna is received back with a delay of 2d/c seconds (c speed of light 3*10E8m/sec). Example: if d is 3m, the delay is 20 nanoseconds. During this delay the frequency of the transmitter has increased 200kHz versus the received signal. (100MHz*20nsec/10usec) The transmitted and received signal are combined (mixed) and passed through a highly nonlinear element, i.e a diode. The output of this process are waveforms that include the sum and difference of the 2 signals and their harmonics Through proper filtering we can isolate the frequency difference (200kHz), calculate the delay (20 nsec) and the related object distance (3m) Kind regards

@AndreasSpiess 6 жыл бұрын

Thanks for your explanations. I only doubt if or how all these functions can be done with only one active component. That is the miracle for me... If you look at a newer video we use the principles you mentioned for a bicycle counter. But this device will have much more parts.

@jonahansen 5 жыл бұрын

Dude - did you copy that out of a textbook? Nice explanation for doppler ranging radar. But that's not what this does. It just detects motion by mixing the transmitted and received signals together and detects a low-frequency beat. No ranging info. No speed info. Just detects motion.

@researchandbuild1751 3 жыл бұрын

That is not the principle how these work, though. They are simple regen style recievers

@thomaspatrick4564 6 жыл бұрын

Andreas Spiess, you are putting out very good content. Thank you! You are having an impact on the world.

@AndreasSpiess 6 жыл бұрын

Nice to read. Thank you!

@monkeyjuju7441 7 жыл бұрын

this video was incredibly informative! Keep it up, man

@AndreasSpiess 7 жыл бұрын

Thanks!

@UberAlphaSirus 7 жыл бұрын

IRC these units don't work like a radar. IRC they don't receive a signal back from what they send out. They just emit a continuous wave and monitor how much power it is using to transmit. if something moves in it's "field" it changes the SWR standing wave ratio of the transmitter, causing it to us more or less power that the comparitor uses to cause a trip.

@AndreasSpiess 7 жыл бұрын

This is one additional opinion on how these devices work. I stopped to try to understand. I just use them...

@UberAlphaSirus 7 жыл бұрын

Baaaa

@keesterwee4890 7 жыл бұрын

I agree with Sirus. This is very similar to the way shop lifting alarms work.

@atmel9077 5 жыл бұрын

Depending of the distance between the transmitter and the reflections the signal arrives at the receiver either in phase, out of phase or in betwee at the receiver. The two signals are present on the transistor at the same time. As the transistor is a nonlinear device the two signals mix together and generate a DC offset dependant of their relative phase. When an object is moving in front of the sensor this DC offset oscillates at a very low frequency. This signal is amplified and detected by a chip which is very similar to the BISS0001 used in PIR sensors as the output signals of these sensors are nearly identical. The only difference is that this chip includes a built in 3.3v regulator.

@TRS-Tech 4 жыл бұрын

@@keesterwee4890 They do not work the same way as the shop theft systems. They rely on the same technology used with prox or access control tags. The arches transmit an rf signal that sweeps a small bandwidth at around the 3.8ghz mark. The tags on the shop item have an antenna tuned to that frequency, a small capacitor and transistor in a smc package connect to the antenna. The RF energy from the arches powers the IC in the alarm tag and creates a simple oscillation resulting in a reflection of RF power at a slightly offset frequency or delay depending on the system type. The signal return to the arch triggers the alarm. It's just come over to the uk but stores in Japan have been using this for years with IC's that will return a pulsed code instead of just a "present" signal as with the theft alarms. These shops in Japan allow you to swipe your customer card and then go round the store filling your trolly. When you exit the store all the prox codes are read and you are billed for the goods. Sadly until all the packaging manufacturers and the industry incorporate smart IC technology we cannot switch to this system. I tested a product with a smart tag a while back and was not surprised to discover that the coded return from the product matched the bar code ! I assume this has been done to make life easier for any stores that have a barcode database. They only then need switch from a barcode reader to an RF based one. I can't see unmanned stores taking of in the UK just the stock itself ;-) With regards to how these little detectors do operate see my reply to "Sirus"

@chuxxsss 7 жыл бұрын

Radar transistor, switch turns on to send signal for fix time period. Then it changes to receive signal must be another switch somewhere in your circuit. On receive the signal is passed through a range gate system. Plus filters first to get rid on high frequencies and only let audio frequencies through to range gates. Don't get me started on speed. One of many jobs I have had.

@AndreasSpiess 7 жыл бұрын

+Chris B You are right. But here, you only find one transistor. This is, what amazes me.

@chuxxsss 7 жыл бұрын

Most of the stuff for filters would be in the chip. I need to go to the shed to check the transistor system use in this circuit, Andreas. As I do remember there was a simplified, radar which used one transistor, but have not been doing radar 11 year not so a bit rusty.

@AndreasSpiess 7 жыл бұрын

+Chris B The chip seems to be a digital PIR sensor timing chip. No RF, no filters there.

@chuxxsss 7 жыл бұрын

No the chip would be audio processing if used for filtering range.

@chuxxsss 7 жыл бұрын

Worked it out the transistor is mixer and mode suppressor. Clock is generated by the chip which must pass it to a solid state drive unless it is in the chip. If you need to know more msn me mate.

@lammingmik 6 жыл бұрын

Top notch video. Practical, succinct, objective. A benchmark for review vids.

@AndreasSpiess 6 жыл бұрын

Thanks! :-)

@RobEinstein 7 жыл бұрын

Great video as always. Thanks Andreas. Have a great Sunday!

@AndreasSpiess 7 жыл бұрын

Thanks. You too!

@imemyself2820 6 жыл бұрын

@Andreas, some new LiDAR models entered the market, you could test them maybe?

@AndreasSpiess 6 жыл бұрын

Any links?

@imemyself2820 6 жыл бұрын

This one is the original of the cheaper LiDARs on the market but currently sold out: www.3dxr.co.uk/product/benewake-tfmini America: www.seeedstudio.com/Seeedstudio-Grove-TF-Mini-LiDAR-p-2996.html America 2: www.robotshop.com/en/benewake-tfmini-micro-lidar-module-12-m.html This one is a China knockoff but perhaps the same: www.aliexpress.com/item/RCmall-Lidar-Range-Finder-Sensor-Single-Point-Micro-Module-for-Arduino-Pixhawk-Cable-Benewake-TFmini-Drone/32852024277.html High Quality LiDAR for reference (older) : www.robotshop.com/en/lidar-lite-3-laser-rangefinder.html

@AndreasSpiess 6 жыл бұрын

Thanks for your links. I will look into the matter.

@kmikeru 7 жыл бұрын

I bought a sensor which is marked "2.7GHz" from Aliexpress and was quite surprised by the spectrum of signal which it emits. It is not a narrow "spike" but rather wide, maybe 1 MHz wide. Is that happening because of poor Q of PCB resonator?

@AndreasSpiess 7 жыл бұрын

I do not know, because I was not able to see much spectrum below 3 GHz.

@ABaumstumpf 7 жыл бұрын

1 MHz isn't that bad for these type of devices. with an arduino your frequency can vary as much as 0.5% - at 3 GHz that would be 1.5 MHz just from inaccuracy.

@ytfp 7 жыл бұрын

A very comprehensive review! Thank you for your hard work!

@AndreasSpiess 7 жыл бұрын

You are welcome!

@cemmusabak 2 жыл бұрын

Nice work. It was pleasure to watch. Many thanks.

@AndreasSpiess 2 жыл бұрын

Glad you enjoyed it

@AdeDerby 7 жыл бұрын

The 1.8 GHz could be a DECT phone

@AndreasSpiess 7 жыл бұрын

Thanks for the hint. This is well possible because one was close by.

@lostrafos 6 жыл бұрын

Hello Andreas, Before I begin, I like your videos a lot. In your video at 15:04 min. you explain that the RCWL-0516 cannot work in a 3.3 volt environment, I make a mistake and put 3.3 volt as input voltage. So 3.3 volt on the 3.3 pin and GND on the GND pin then a diode connected on the Out pin and GND, and wonder the RCWL-0516 works also, it detects movements like before. I think that you can use the module from 3.3 volts and if you have 4 volts till 28 volts you must connect the input voltage on the VIN pin. www.elecrow.com/rcwl-0516-microwave-radar-sensor-switch-module-body-induction-module-4-28v-100ma.html Greetings from Holland, Jan-Henk van Kesteren

@AndreasSpiess 6 жыл бұрын

Thanks for your link. Maybe there are different versions of the same modules around, as in many other cases. Or I did something wrong, which also happens from time to time.

@alexsmadhouse Жыл бұрын

thank you so much for doing this test its very important for many useful applications !

@AndreasSpiess Жыл бұрын

You are welcome!

@MuhammadArshad-hl9hh 4 жыл бұрын

Very useful comparison video . Great effort is done .

@AndreasSpiess 4 жыл бұрын

Thank you!

@RoterFruchtZwerg 7 жыл бұрын

Are you sure the RCWL-0516 does not work on 3.3V? I really cannot see a reason why it shouldn't work if you power it with 3.3V on the 3.3V pin. Usually a voltage regulator doesn't care much if you power its output with the right voltage and no input connected... Even if the voltage regulator is integrated within the IC. And I don't think the unregulated input voltage is used anywhere else except on the voltage regulator input. You should try it.

@AndreasSpiess 7 жыл бұрын

You are right. I tried it again now and it works. I do not know what I did last time... BTW: I did not see a voltage regulator chip on board.

@alevi7856 7 жыл бұрын

@Roter . If I understand you well, the 3.3V pin can also be used as an INPUT (on +3.3V) as long as the Vin pin is not used ... am I right ?

@AndreasSpiess 7 жыл бұрын

Yes

@alevi7856 7 жыл бұрын

Thanks, then I'll try to power the radar sensor from the 3.3V output of my ESP8266 board.

@robbateman9836 7 жыл бұрын

Yann M I'd like to know how you get on.

@Mobeone 7 жыл бұрын

Great video Andreas! I found this GitHub repo that has a schematic of the RCWL-0516 : github.com/jdesbonnet/RCWL-0516/blob/master/README.md that you may find useful. Thank you for the great videos!

@AndreasSpiess 7 жыл бұрын

Thanks for your link!

@bjl1000 2 жыл бұрын

I thought youtube didn't allow links in the comments?

@daskasspatzle2396 7 жыл бұрын

Thank you and your neighbour as well for this demonstration of these interesting devices ;-)

@AndreasSpiess 7 жыл бұрын

:-)

@RelentlessHomesteading 5 жыл бұрын

Very nicely done - appreciate your thoroughness on the testing; gave me some background on what they might do.

@AndreasSpiess 5 жыл бұрын

Thank you!

@bblancka 7 жыл бұрын

Great hands-on test ! Thanks ! More info here: github.com/jdesbonnet/RCWL-0516

@AndreasSpiess 7 жыл бұрын

Thanks for the link.

@venkateshe7506 7 жыл бұрын

Thank you very much. Appreciated.

@RaadYacu 7 жыл бұрын

This is very helpful video Andreas. Nicely done.

@AndreasSpiess 7 жыл бұрын

Thanks!

@igotes 7 жыл бұрын

Just found your channel.. Great work! I appreciate the comprehensive analysis of these cheap sensors, as the ebay listings tend to give little information.

@AndreasSpiess 7 жыл бұрын

Thank you!

@MrGnidlih 7 жыл бұрын

I must thank you for these videos, they are great.

@AndreasSpiess 7 жыл бұрын

You are welcome

@georgewashington421 5 жыл бұрын

Great video. Appreciate the effort to examine and compare the most important characteristics of each unit with a scientific approach. I agree with you, even if the units are simply measuring the variance in transmitter output to determine motion, some sort of return circuit is required. Thanks again.

@AndreasSpiess 5 жыл бұрын

You are welcome!

@PatrizioBekerle 6 жыл бұрын

Thank you for the video, Andreas! I love your channel! I want to report that the RCWL-0516 works great with the Sonoff Basic switch with the OUT pin on the Sonoff's GPIO14 pin and the 3.3V pin connected to the 3.3V of the Sonoff. I use it to report movement via MQTT.

@AndreasSpiess 6 жыл бұрын

Thank you for your feedback. I am sure it will help other viewers!

@egr8735 7 жыл бұрын

Very interesting and complete comparison. Thank you!

@AndreasSpiess 7 жыл бұрын

Thanks!

@pedro.federici 7 жыл бұрын

Very nice comparison, Andreas!

@AndreasSpiess 7 жыл бұрын

Thanks!

@ignacios3992 3 жыл бұрын

Genial! Justo acabo de comprar el RCWL-0516 para detectar la presencia de intrusos, una muy buen explicación amigo! Gracias por compartirlo con nosotros

@AndreasSpiess 3 жыл бұрын

You are welcome!

@deletedaccount-pw4yd 4 жыл бұрын

Many thanks for the great summary - exactly what I needed to know :) Best regards from DE

@AndreasSpiess 4 жыл бұрын

You are welcome!

@mgbetta6300 4 жыл бұрын

I very like your videos and how you do explain the comparison. You're now my favorite youtuber.

@AndreasSpiess 4 жыл бұрын

Thank you and welcome to the channel!

@a1smith 3 жыл бұрын

Thank you, very helpful comparison.

@AndreasSpiess 3 жыл бұрын

Glad it was helpful!

@MRrwmac 6 жыл бұрын

Never heard of those fantastic little radar sensors. Thank you.

@AndreasSpiess 6 жыл бұрын

You are welcome!

@javierpallalorden 7 жыл бұрын

Great comparison, thank you, merci vielmal Andreas!

@AndreasSpiess 7 жыл бұрын

You are welcome!

@vancouverman4313 3 жыл бұрын

Interesting video which gives a lot of useful information about these devices.

@AndreasSpiess 3 жыл бұрын

Glad you think so!

@klassichd10 7 жыл бұрын

Thanks for this comprehensive and systematic comparision. It comes very handy to me because I also received a sensor similar to XYC-WB-D1 for playing around and looking for a helpful application. Unfortunately (?) most helpful application are already covered in my environment. It is really an excellent work to do all that with just one (1) transistor and some passives. Chapeau!

@AndreasSpiess 7 жыл бұрын

That is what I think, too...

@jonahansen 5 жыл бұрын

Thanks for all the hard-won information! Great study.

@AndreasSpiess 5 жыл бұрын

You are welcome!

@ernstelderenbosch1715 7 жыл бұрын

Thank you for this interesting video and excellent and very useful comparison!

@AndreasSpiess 7 жыл бұрын

You are welcome!

@soportedec 6 жыл бұрын

Congratulations for your work. This type of videos are very useful when making a purchase decision.

@AndreasSpiess 6 жыл бұрын

Thank you!

@andrewkoval1916 2 жыл бұрын

Thank you very much for this review!

@AndreasSpiess 2 жыл бұрын

You are welcome!

@NudeJawn 5 жыл бұрын

Thank you Andreas.

@ArduinoBasicsBlogspot 7 жыл бұрын

Excellent video. I just bought some of these myself. Looking forward to testing them out when they arrive.

@AndreasSpiess 7 жыл бұрын

:-)

@maxg4958 5 жыл бұрын

Thanks for the work and presentation; much appreciated. HAd ordered one to test and wondered about the specs; now I know. :)

@AndreasSpiess 5 жыл бұрын

You are welcome!

@flightmaster999 3 жыл бұрын

I just found your channel, great video! I like how precise and concise your comments are. Brief, clear and to the point. You have a new subscriber! And you made me laugh so much at the end when you said "If true then like". 🤣

@AndreasSpiess 3 жыл бұрын

Welcome aboard the channel!

@ThomasReinermallorca Жыл бұрын

wie immer auf den Punkt!

@AndreasSpiess Жыл бұрын

Danke!

@zaidhussain5206 7 жыл бұрын

Thank you so much for sharing this video, really informative.

@AndreasSpiess 7 жыл бұрын

You are welcome!

@XIIIStefanC 7 жыл бұрын

Video was very interesting to watch and the comments contained more interesting information, subscribed.

@AndreasSpiess 7 жыл бұрын

Welcome to the channel!

@arthurlundquist6267 6 жыл бұрын

Excellent; exactly what I was looking for. Subscribed.

@AndreasSpiess 6 жыл бұрын

Welcome aboard!

@BikerCaf 3 жыл бұрын

Very good, thank you. You have to bare in mind that a lot of double glazing windows have an aluminium coating all over the glass for thermal insulation/reflection, and so this will no doubt explain away a lot of the RF attenuation you found when doing the double glazing window through tests.

@AndreasSpiess 3 жыл бұрын

Maybe it has a coating. But I do not think so. It is more than 20 years old and back then, coating was quite expensive.

@CJChannelYT 6 жыл бұрын

Wow, such a solid video - respect to You Andreas

@AndreasSpiess 6 жыл бұрын

:-)

@avejst 7 жыл бұрын

Fantastic video. you are as thorough as ever. thanks for your big use off time to make this video 👍😀

@AndreasSpiess 7 жыл бұрын

Thanks for your feedback!

@itzelsolrodriguezrangel9702 2 жыл бұрын

so touching for an excellent video

@AndreasSpiess 2 жыл бұрын

Glad you enjoyed it

@madmedix2 7 жыл бұрын

Nicely done - thank you for the effort.

@AndreasSpiess 7 жыл бұрын

You are welcome!

@bangkevin2460 5 жыл бұрын

Thanks for your video. I need to use motion detection for my project. I appreciate your effort and infos.

@AndreasSpiess 5 жыл бұрын

You are welcome!

@acestudioscouk-Ace-G0ACE 3 жыл бұрын

Good to follow the thought process.

@AndreasSpiess 3 жыл бұрын

Thank you!

@ceptimus 7 жыл бұрын

Really good video. Clear and very informative. Thank you.

@AndreasSpiess 7 жыл бұрын

:-)

@saschakalweit6067 7 жыл бұрын

Awesome! Thank you so much for your work!

@AndreasSpiess 7 жыл бұрын

You are welcome!

@asiw 7 жыл бұрын

Fantastic review, full of useful information. I must get some of these to play with once I have finished refurbishing my bathroom. Best wishes Arthur

@AndreasSpiess 7 жыл бұрын

Maybe then I also have some more experience with them...

@magna59 7 жыл бұрын

Thank you for putting this up .

@AndreasSpiess 7 жыл бұрын

You are welcome!

@BaronVonBiffo 7 жыл бұрын

A masterpiece. Thank you.

@AndreasSpiess 7 жыл бұрын

:-)

@jeandilissen4197 3 жыл бұрын

This was interesting AND useful! Thanks

@AndreasSpiess 3 жыл бұрын

Glad it was helpful!

@pjwlk 5 жыл бұрын

Very imformative. Thank you for your efforts!

@AndreasSpiess 5 жыл бұрын

You are welcome!

@aaaaaaaaaa5446 7 жыл бұрын

Excellent video. Bravo.

@AndreasSpiess 7 жыл бұрын

:-)

@Wheel333 7 жыл бұрын

Great testing, enjoyed that ,thanks.

@AndreasSpiess 7 жыл бұрын

:-)

@greenspand 7 жыл бұрын

Thank you for these awesome video presentations. Helped me allot understand the principles.

@AndreasSpiess 7 жыл бұрын

Thanks!

@philippelhaus 7 жыл бұрын

topic was new to me. very good video, very professional. good job

@AndreasSpiess 7 жыл бұрын

Thanks!

@5Komma5 7 жыл бұрын

Nice video. Have not come across these modules yet. Very interesting, will have to add one to my collection.

@AndreasSpiess 7 жыл бұрын

:-)

@cdunham6486 Жыл бұрын

Very informative. Thank you.

@AndreasSpiess Жыл бұрын

You are welcome!

@deangreenhough3479 7 жыл бұрын

I feel fully informed, thank you 😊

@AndreasSpiess 7 жыл бұрын

As usual, you are welcome!

@errenhidden2737 6 жыл бұрын

Excellent video.Thanks for sharing

@AndreasSpiess 6 жыл бұрын

You are welcome!

@RonivaldoPassosSampaio 7 жыл бұрын

Great Comparison! I'm anxious about the next video explaining how they work! Please do it :) Thanks a lot!!

@AndreasSpiess 7 жыл бұрын

I can not do a video about the working, because it seems to be a big mystery...

@RonivaldoPassosSampaio 7 жыл бұрын

Andreas Spiess I'm sure you can! To me it's a big confusing theme, but you seems to be totally capable :)