#219

At the end of the two videos, you will understand everything necessary about frequency, modulation, bandwidth, power, propagation and a few other aspects to take the right decision for your project. And you will learn at least two new words: Time and frequency domain.
Questions answered: - Which module should I use?
- What is the operating range?
- What is the throughput?
- What is the connection reliability?
- Can it communicate one- or two way?
- How much energy is needed for the transmission?
- Which module is better?
- What is legal?
- What about security issues?
Links:
NRF24L01+: s.click.aliexpr... or bit.ly/2Ngxwzx
NRF24L01 Long Range: s.click.aliexpr... or bit.ly/2NgExQN
RFM69HCW: s.click.aliexpr... (Always use high power version, you can reduce power if needed)
Supporting Material and Blog Page: www.sensorsiot.org
Github: www.github.com...
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My Bitcoin address: 19FSmqbBzb5zsYB1d8Bq4KbxVmezToDNTV
If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases the next 24 hours) to buy new stuff for the channel
For Banggood bit.ly/2jAQEf4
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/ spiessa
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Please do not try to Email me or invite me on LinkedIn. These communication channels are reserved for my primary job
Equipment in my lab: www.sensorsiot....

[@waltsteinchen]

Love these videos! .. really very very helpful. Not overloaded with too many details and very undestandable and *usable* in the end! Thanks a lot Andreas!

[@AndreasSpiess]

Thank you for your feedback. I thought because I cover quite some RF stuff (with more coming) it might be a good idea to cluster the basics. Many people do not know these facts and ask for impossible things like "Ethernet over LoRa"

[@duncanx99]

Oh how I wish this video had been around when I learnt about RF in the 1960s... Excellent, thank you Andreas.

[@AndreasSpiess]

Then our teachers did not have these nice toys to show all of this. It would have cost a lot of money.

[@yoramstein]

Fantastic video for the new comers to the fiels of wireless .Easy to understand language just because English is not your mother language and you talk clear and slowly. Thanks.

[@AndreasSpiess]

Glad to read that! This was my goal.

[@jpoppinmoneyunit7098]

Your videos on wireless communication have been wonderful. I don't feel like there is enough information out there on how all these things work and I don't even know where to start on looking them up. Thanks!

[@AndreasSpiess]

You are welcome. I think there is a lot of information available, but I thought, some order would help.

[@zolatanaffa87]

Well done Andreas. if only my teacher was clear and concise like you ...... thank you so much for refreshing these basic concepts and for the new legal limits (I have a special license, that is limited, amateur radio (only above 30 MHz, max 10 W output) but many years that I do not do more activities. Here in Italy the license is forever but then you have to have the license that corresponds to the name that allows you to operate (was IW4DZF). that I let it expire and then, legally, I can no longer go "in the air" as amateur radio, at least until I renew it. Bye

[@AndreasSpiess]

I think it is the same here: We have to pass a test and get this renewable license each year. It costs a little more than 100 EUR each year :-(

[@zolatanaffa87]

@@AndreasSpiess how much cost in your Land! Here in Italy, about 20 years ago, the cost was about 1.5 euro (3000 lire) per year since i payed for the Postal administration it was more a pain than a gain!

[@AndreasSpiess]

So the Swiss do it "better". They should gain something with the 100 Euros...

[@ytfp]

Awesome video Andreas! Although I had to rewind about 5 times once the little hand came out because it is so hilarious I could not concentrate. If you made that yourself, you did an awesome job on your crafts skills. Such a wonderful idea. Thank you for your videos.

[@thisusernameismine10]

Yeah, really digging the analogue "little hand" (literally: a pointer) . I think there is scope for these for video makers - like the thumb goes "thumbs up", "thumbs down" etc or the fingernail flashes green or red etc depending on if the selected feature is neg/pos. Nice side project for some enterprising person.

[@AndreasSpiess]

This little hand belongs to my wife. She was a teacher and used it in their lessons.

[@BerndFelsche]

Your usual high standard of presentation is most welcome. I know this stuff but watch it because of the quality. Eagerly awaiting the next lesson. 😃

[@AndreasSpiess]

Thank you! I knew that many viewers know the stuff. But many do not know it. And I thought it might be good to have a video to point on if somebody asks "silly" questions ;-) And as a preparation for SDR, it also might be helpful.

[@billfield8300]

Another excellent video Andreas. I absolutely love the pointer hand. As an absolute beginner in RF, I found it very informative. Thanks. Looking forward to the second part.

[@AndreasSpiess]

You are welcome. The second part is finished and will air as usual on Tuesday evening my time.

[@giulianocecchi1397]

Grüezi Andreas, Many thanks for your tutorial, very interesting and useful. Several topics you mention are also very useful to understand what I can receive with my SDR dongle. Keep up with your excellent work. Cheers.

[@AndreasSpiess]

Thank you. Maybe you watched my newest video about SDR?

[@onuryorutken5540]

Perfect video ! Loss in free space chart alone is great. Simple as Einstein says but not simpler. Thank you guy with the Swiss accent for this another great video.

[@AndreasSpiess]

Glad you liked it! Did you see my second channel focussed on wireless?

[@onuryorutken5540]

@@AndreasSpiess Yes ! since opening of it i am sitting in the first row. I am very interested in wireless and sdr topics also, i have searched internet about frequency, power and range relations but with this videos they are crystal clear now. I am looking forward for new videos, have a nice day sir.

[@MrAtarifreak]

Hello Andreas, thank you for the information. I am looking forward to the next part.

[@AndreasSpiess]

You are welcome!

[@slinco65]

Thanks Andreas - I'll need to view this a few times, but this RF stuff is starting to make sense to me now. Can't wait for part 2 :-)

[@AndreasSpiess]

You have to wait till Thursday evening :-(

[@andrewbruns4270]

Yet another great video to reflect on for those of us trying to get back into building projects or even people trying to learn. I do have one request for a future video: What is the proper approach from an engineer's standpoint on how to approach powering a project? You have laid out the basics on powering the boards in a prior video but I'd love to hear your approach when it pertains to multiple things. For example-an ESP32 (or Arduino), a couple sensors, an LCD, and add in a relay or two for good measure. Everything seems to be going in the 3.3V area but there's still a lot out there running at 5v and some can run either voltage. I appreciate your videos and I look forward to all that follow !!!

[@AndreasSpiess]

Thank you! Many devices need more than one power rail. and usually, you have one voltage regulator per rail. This is straightforward. If your battery voltage is too low, you need a boost converter and if your battery voltage is always inside the chip specifications (e.g. LiFePo4 for 3.3-volt devices) you can avoid a regulator.

[@andrewbruns4270]

Ahhh so I guess my actual question would be what's the cut off point between bucking and boosting? I ask because I noticed when you touch on that subject you emphasize efficiency but it's always in reference to powering a single item. I apologize for being off topic by the way...

[@AndreasSpiess]

Boost means the output voltage is above the input voltage. Buck means the contrary. Usually not exactly, because each regulator has a certain loss. So you might need a boost converter a little earlier. And as I wrote, in general, you treat each rail independently, starting with the needs. Then you easily see if you need to boost or not (see above). If not, you use buck or linear regulators. You get also buck-boost converters. However not for small power. They use automatically the right technology.

[@TonyLehto]

Eagerly waiting for part 2!

[@AndreasSpiess]

It will air on Thursday.

[@TonyLehto]

Andreas Spiess Thanks! Good work!

[@honigwachsreuben]

@@AndreasSpiess I guess it's still in the making or have I overseen it?

[@williammiller7543]

Very timely video. My grandson needs to capture data from an electric kart and try to optamize its perfomance based on the data captured. All contestants use the same batteries, motor, controller. They build the frame. The contest is to make as many laps ( total distance driven) within a 1 hr timeframe on a single charge. There are some tuneing perametersavailable in the controller. Tranck is Oval and 1/2 mile long.

[@AndreasSpiess]

I would try 433 or 868 MHz. Maybe you use a receiver (e.g. an SDR dongle as I showed in my 433 Hack video) to check which frequencies are already occupied by other teams.

[@steiniapproved]

I really like the way you teach the different topics! I would be excited if you create a in-depth video of the harmonics you mentioned in this one. Why do they appear, why are they different depending on the waveform, when are they disturbing other frequencies, which frequencies around the main frequency of a sender should other senders avoid because of these harmonics, ...

[@AndreasSpiess]

This is not easy stuff and probably not for this channel. But I am sure that you find other channels if you search for "fast Fourier transformation" (e.g. kzbin.info/www/bejne/qaG4f6Ove5preLs )

[@MohitAgnihotri5]

You're my inspiration. I learn lot from your videos and use for end products development. Really thankful :)

[@AndreasSpiess]

You are welcome!

[@shazam6274]

Very nice & concise. One correction: antennas are all lossy, they do not have "gain". The so called "gain" is relative to an isotropic radiator (i.e. omni-directional) antenna. The "gain" number is referenced to the omni-directional antenna, and is achieved by narrowly focusing the effectiveness of the antenna, similar to lenses and reflectors for light.

[@AndreasSpiess]

You are right. I said, I will simplify shamelessly ;-)

[@PhG1961]

Excellent explanation about time/frequency domain. Well done and thnxs for sharing.

[@AndreasSpiess]

You are welcome!

[@greenmoss]

Outstanding explanation and superb video. You are creating a very valuable information resource.

[@AndreasSpiess]

Thank you!

[@meinsda5983]

Great work! I hope you extend this tutorial to tell us how to choos the right antennas ;)

[@AndreasSpiess]

I hope you saw the last mailbag. There you saw at least one for 868 ;-)

[@deangreenhough3479]

Happy Sunday Morning🏴󠁧󠁢󠁥󠁮󠁧󠁿😀

[@AndreasSpiess]

Summer is over ;-)

[@deangreenhough3479]

Andreas Spiess Winters Coming😬🏴󠁧󠁢󠁥󠁮󠁧󠁿

[@deangreenhough3479]

Are you by chance a Game of Thrones fan? 🤔😀🏴󠁧󠁢󠁥󠁮󠁧󠁿

[@AndreasSpiess]

Me? No. I have not the time for gaming (and I never had so far) :-(

[@mercedesbenz938]

DANKE - Thank s. Ich kann als "Oldi" kaum englisch - lerne bei deinen Videos immer dazu - sehr gut erklärt. Freu mich auf weitere Themen. Gibt's von dir auch etwas in deutsch . Nochmals DANKE - mach bitte weiter so. Gruss aus Wien.

[@AndreasSpiess]

Gern geschehen. Ich habe mich von Anfang für Englisch entschieden. Das ist weit verbreitet in der Elektrotechnik. Deshalb gibt es nichts auf Deutsch.

[@manickn6819]

Excellent video. I will make time later this week to look at the second part.

[@AndreasSpiess]

Thank you!

[@marinehm]

Wow. I learned a lot from this video. Really. I was looking at a LORA. So for long range with obstacles. I would want the lower band ones. 400 vs 800

[@AndreasSpiess]

Yes. Pay attention you avoid the channel used by all remote controls and temperature sensors ;-)

[@marinehm]

Ah, yes. Thank you for the tip.

[@SteveWrightNZ]

Good work, Andreas.

[@AndreasSpiess]

Thank you!

[@boltactionpiano7365]

A receiver can distinguish between two signals at the same time/frequency if it has multiple antennas. MIMO allows "Spatial Multiplexing" whereby spatial diversity (slightly different transmit locations and obstacles) cause signals to be slightly different on the receiving end. With fancy math you can reconstruct the signal. 802.11n and up makes use of this. Gigabit Ethernet sends and receives on the same lines with the use of echo cancellation.

[@AndreasSpiess]

You are right. But as I said, I simplified things.

[@boltactionpiano7365]

Sorry, was just in internet corrector mode. I do enjoy your content!

[@DarrynJones]

That pointing hand is hilarious! I spat my drink out when I realised what it was 😂

[@AndreasSpiess]

It is from my wife. She was a teacher ;-)

[@MrWahjudi]

Its very helpful to understand radio.

[@AndreasSpiess]

Thank you!

[@allistergilbert4564]

Well done, really enjoying your work

[@AndreasSpiess]

Many thanks!

[@frogeye22]

Thanks Andreas - very accessible content!

[@AndreasSpiess]

You are welcome!

[@RTPTechTips]

Love your stuff. Important info. Another great video as always! 🙂

[@AndreasSpiess]

Thank you!

[@neail5466]

Sir plz include Channel s (how to determine the no of channels in each frequency)and frequency hopping in next one, This one is very useful but if more delved into frequency domain ,it would be more helpful for me.thank you for your efforts.

[@AndreasSpiess]

Frequency hopping is a very special topic and I do not think I will cover it here.

[@neail5466]

@@AndreasSpiess thank you for responding, as you wish sir, but please dedicated a minute or two to channels and bands (esp. How the channels are considered of a specified frequency).

[@dave-in-nj9393]

I think that after reading Tesla's work on wireless, Marconi figured he could use that as a tutorial and them make the devices Tesla described. it worked, and by following many of Tesla's patents on wireless, Marconi was able to duplicate the work laid down for him.

[@AndreasSpiess]

For me inventions often need more than one person to be successful. Often the guy who does it is more important than the guy who had the idea. Many ideas without a "Maker" disappears. So, both are very important to me. P.S. Telsa's biography is sitting on the shelf to be read ;-)

[@dave-in-nj9393]

@@AndreasSpiess : I wish that all of Tesla's work was available for all. the conspiracy theory is that the Gov't locked it away in some vault. People often State that James Watt did not make the steam engine, but made it better. Schools do not teach that Edison bought the rights to the electric light and then perfected it, they say he invented it. We know that Steve Jobs did not invent the Apply OS, but got it from Xerox PARC and that Bill Gates bought DOS from IBM, then changed it a bit, then sold the rights to use it back to them. all good marketing and for their marketing skills, their names will live for a long time.

[@estebanalarcon7340]

Very good the video, can clarify many doubts that I had. Thank you!!!.

[@AndreasSpiess]

Glad it was helpful!

[@rondlh20]

Great info, look forward to part 2

[@AndreasSpiess]

It will air next Thursday evening my time.

[@frankalvarez7387]

Thanks for the info Andreas, i cant wait for part 2 :)

[@AndreasSpiess]

Part two will air next Thursday.

[@frankalvarez7387]

Andreas Spiess thanks for your reply

[@nfperrini]

i almost NEVER click the subscribe button, but this is definitely an exception

[@AndreasSpiess]

Welcome aboard the channel!

[@grindel80]

i like the little hand you use at 9:40 :D

[@AndreasSpiess]

I got it from my wife...

[@robert574]

Great videos...great..great..great...

[@AndreasSpiess]

Thank you!

[@yorickhunt3371]

1:56 Correction: Contrary to US-centric "educational" material, Marconi only discovered that Tesla was ambivalent about people stealing his ideas. Up until then, Marconi had only been experimenting with spark-gap transmission.

[@AndreasSpiess]

As I wrote in other comments, I think it needed a few pioneers to get wireless communication up and running. I think Marconi was one of them. But many others were also necessary.

[@CarstenMeyer]

Andreas, thank you for this great video. I am sure a lot of your viewers (including me) have a hard time to find good (and cheap) antennas for various often used frequencies. It would be great if you could recommend some standard (China) antennas or demonstrate in detail how to modify them to make them good antennas. BTW.: Is 433 Mhz allowed in Europe (Germany)?

[@AndreasSpiess]

1. 433 is ISM in Europe AFAIK. So it is allowed in Germany 2. I showed you a good source for Gateway antennas in my last video. 3. I did not find a reliable supplier for small antennas so far.

[@Dhamian]

Thank you! Very well explained

[@AndreasSpiess]

You are welcome!

[@avejst]

Thanks for sharing 😀👍 Very nice totorial

[@AndreasSpiess]

Thank you!

[@happilicious]

Can you do a video about communication among devices, like encrypting/decrypting message, interrupts, and etc. That aside, really enjoyed this video :)

[@AndreasSpiess]

I have no security knowledge. So somebody else has to do that.

[@maxpolaris99]

Andreas is that a picture of you in the bottom right hand corner at the opening of the video? Its so nice to be able to put a face to your Swiss accent.

[@AndreasSpiess]

No, this is Einstein. You find my face on some of the other videos. Not many, though.

[@pigrebanto]

thanks lot. looking for second part.

[@AndreasSpiess]

It should air next Thursday evening my time

[@HariWiguna]

Another superb presentation! Thank you for sharing your knowledge Andreas. If you don't mind, I'm curious how long it took you to prepare, shoot, and edit this video?

[@AndreasSpiess]

Usually it takes about 10 hours for one video. Without project work.

[@alphasatari]

I like your hand!

[@AndreasSpiess]

Thank you!

[@MicheleHjorleifsson]

Great stuff

[@AndreasSpiess]

Thank you!

[@RicardoRodriguesPT]

Another good video. Thanks...

[@AndreasSpiess]

You are welcome!

[@Webshadow]

Your explanations are genius, no more, no less 😉

[@AndreasSpiess]

You are very nice with me. Thanks!

[@Webshadow]

@@AndreasSpiess Thank YOU, your videos are very helpful since i can combine your knowledge with my 3D-Printer, unfortunately i missed the problemsolver crowdproject ... is there a chance you might look at the HackRF One?

[@AndreasSpiess]

I plan to do at least one SDR video. And in the meantime, I have 2 HackRFs ;-)

[@Webshadow]

🤩 should have known

[@cbodington]

A very interesting video. Can you explain in a new video how to used and interpretate the Spectrum Analyzer signals for each antennas? Thanks god for this great channel.

[@AndreasSpiess]

I think I gave a little more info in the video about antennas.

[@cbodington]

Andreas Spiess, ok thank you...

[@glennextra]

Thank you, very well done!

[@AndreasSpiess]

You are welcome!

[@kalana27]

With Ham radio licence, Is there a part of the band we can use to send data to our Robots?

[@AndreasSpiess]

You have to consult the regulations in your country.

[@Ed19601]

I saw a sequel of I think CSI where a transmitter was found at a crime scene. Low and behold, their resident nerd managed to find the 'receiver that belonged to it' by 'following the signal' So I am afraid your explanation must be totally wrong Andreas, I am sure a Hollywood scriptwriter knows better.

[@AndreasSpiess]

You are so right ;-)

[@gotj]

Love your videos! But it was Hertz in the late 1800x, not Marconi.

[@AndreasSpiess]

You are right. There were a few people necessary and Marconi AFAIK did some long range stuff and commercialized it.

[@CraigMullins1]

Do you know any lite cameras for quadcopter that has 20 - 30 x zoom that don't cost thousands?

[@AndreasSpiess]

I do not know a lot about video cameras :-(

[@nenioc187]

Where can I get this small pointer hand?

[@AndreasSpiess]

It is old. I think they do not make them anymore.

[@nenioc187]

That's sad. But thanks for the video. Can't wait for the second part.

[@AndreasSpiess]

It is already in the making...

[@nenioc187]

Great! Thanks, Andreas!

[@thearchibaldtuttle]

Had them in school too! Used for the overhead projector. You still can buy similar ones www.timetex.ch/neuheiten/zeigestab-orange-hand-fuer-ohp-praesentation?sPartner=gsh1-ch&gclid=Cj0KCQjw-b7qBRDPARIsADVbUbXCsFGMUIUZwWUNo7mZ2nnyaL9bkrkbUZfoyIJzIlyMHJiMbbEJzdYaAhWIEALw_wcB

[@lubeda04]

Sehr gut erklärt

[@AndreasSpiess]

Danke!

[@loukask.9111]

Dann that Video came fast!!👍👍

[@AndreasSpiess]

The Swiss are not always slow ;-)

[@loukask.9111]

i appreciate that! :D after your advice i found a video with a 433 mhz kit on banggood for $60 which claims to achieve a range from "10 to 40 km, with a good antenna even more", i'm pretty sure this wiill help me out! kzbin.info/www/bejne/eZTGl2aaetWCfLM Greetings once again, awesome videos!

[@iamsuperroot]

When will the next part be available?

[@AndreasSpiess]

On Thursday evening my time

[@electronic7979]

Useful video

[@AndreasSpiess]

:-)

[@leonardoandreoli5399]

Hi, Andreas. I really apreciate your videos! Is there any book about RF engineering you wold recommend?

[@AndreasSpiess]

The ARRL has some books with general knowledge. Maybe you search for them on Amazon.

[@leonardoandreoli5399]

Andreas Spiess Thank you!

[@eumesmo-kd1tr]

this is so fucking good, damn it, thank you

[@AndreasSpiess]

:-)

[@poweredbysergey]

Usefull

[@AndreasSpiess]

:-)

[@MeisterQ]

Hi Andreas. Since we are using Wireless communication and batterypowerd sensors, how can we charge LiFePo4 batterys with solarpanels (like 6V panels?). I was thinking about leaving my esp32s running with LiFePo4 on 18650 design. But how can i charge them up while using its energy? Theres a "TP5000" chip. But i dont understand. Do you understand?

[@AndreasSpiess]

I did some videos about Solar charging. LiFePo has a different maximum voltage. So you have to search for charging modules for this technology.

[@MeisterQ]

Yes ive seen your videos. But im talking especially about LiFePo4 batterys. Its maybe interessting for your low power projects, isnt it? The charging chip is the TP5000, similar looking to the TP4056. But im not that intelligent like you with integrated circuits..

[@iceberg789]

when i am trying to connect serial for hc-05, i am getting a port busy error, any help on why it is happening ? (connecting with arduino serial)

[@AndreasSpiess]

I never used these modules so I cannot help.

[@zukjeff]

come on ;-). Put a tiny white glove on the pointer hand to save reflection and to reinforce your 'trademark' ;-)

[@AndreasSpiess]

Good idea. Maybe I have at least print a white one...

[@kavtech_midi]

which one is faster/very small latency?

[@AndreasSpiess]

The latency has a lot to do with transmission speed because you have to wait for the last bit to arrive. So the higher the data rate (or the shorter the message) the lower the latency.

[@kavtech_midi]

@@AndreasSpiess how about bluetooth vs wifi, which one is faster? i have project sending midi, i try with hc05, when i press button, its so latency to the receiver.

[@AndreasSpiess]

I do not know :-(

[@wolfgangkaiser8843]

ganz interessant, und wann kommt der zweite Teil ?

[@AndreasSpiess]

Am Donnerstag Abend

[@IanJeffray]

Someone's been watching Colin Furze ;)

[@AndreasSpiess]

Always!

[@ajaybnl]

Awesome

[@AndreasSpiess]

Thank you!

[@JNET_Reloaded]

I need a friedland sa-p2 remote control but they are expensive can you show how to to build 1?

[@AndreasSpiess]

In an earlier video, I showed how you can hack remotes.

[@JNET_Reloaded]

I not got a remote thats the point it got lost and they expensive :/ lol

[@AndreasSpiess]

Then you have only a very small chance to hack it.

[@benjaminpauza159]

I have always heard that higher frequencies penetrate objects better but am learning that this is wrong. Can anyone elaborate on this?

[@AndreasSpiess]

No, the higher the frequencies, the more they behave like light.

[@benjaminpauza159]

@AndreasSpiess so is there truth to the claim that one should use uhf radios over vhf while indoors? Is the shorter wavelength “fitting through cracks” actually something to consider?

[@AndreasSpiess]

@@benjaminpauza159 The antennas get longer with low frequencies, so indoors and low frequencies are not very convenient.

[@benjaminpauza159]

@AndreasSpiess thank you. I know this is a rather simple few questions but there is a lot of misinformation propagated in some ham groups. Thank you for showing the Physics of emf on your channel.

[@GeekBii]

6:46 I understand know why the Brazil president Jair Bolsonaro's security team were blamed for interfering the communication of the VAR system with the referee on the quarter-final of the copa america match between Brazil and Argentina which loss the match.

[@AndreasSpiess]

Interesting!

[@ErkanOkman]

👏👍

[@AndreasSpiess]

:-)

[@chuxxsss]

Very early today Andreas. No gold today for me.

[@AndreasSpiess]

I am back to "winter schedule" ;-). Concerning gold: Sometimes the way has to be the goal.

[@uiopuiop3472]

For me the only thing i need is an esp8266

[@AndreasSpiess]

Maybe its reach is not good enough for everybody :-(

[@Gabirell]

"The guy with Swiss accent" XD

[@vishalgaurav4411]

I don't know why I watch your videos ?

[@AndreasSpiess]

Are they so bad?

[@vishalgaurav4411]

Oh no dear, they aren't bad. Actually I'm not going to try any wireless anytime soon. But since it comes from your channel, I watch it. Cheers 👍

[@Mic_Glow]

"Tremendously High Frequency" And who said scientists don't have a sense of humor.

[@AndreasSpiess]

I am an engineer, not a scientist. So Ia am allowed to be less precise ;-)

[@ajaybnl]

OTA Serial: kzbin.info/www/bejne/d4ive6qMrrF9bc0

[@AndreasSpiess]

Nice video. I think, I once did a video about UDP serial debugging.

[@dinovasya9]

Че за пи английский, так не говорят даже со словарём, полу немецкий акцент похоже

[@AndreasSpiess]

I do not speak proper English nor Russian.

[@TMS5100]

your hand is very small. you should have it examined by a doctor.

[@AndreasSpiess]

Actually, it was the hand of my wife. She was a teacher ;-)