#120

Sdílet
Vložit
  • čas přidán 28. 06. 2024
  • I want to get two range world records:
    1. Longest connection to a TTN gateway
    2. Longest Low Power Wide Area Network (LPWAN) ground to ground connection
    Come with me on an interesting journey...
    Documentation of World Record: ttnmapper.org/special.php?node...
    Weissenstein Gateway: www.thethingsnetwork.org/comm...
    100 km LPWAN connection: • More than 100km range ...
    Coverage Software: www.ve2dbe.com/rmonline_s.asp
    Parameters used for coverage diagram:
    Antenna Height (m above ground) 20
    Antenna Type Antenna Azimuth (°) 0
    Antenna Tilt (°) 0
    Antenna Gain (dBi) 6
    Mobile Antenna Height (m) 2
    Mobile Antenna Gain (dBi) 2
    Frequency (MHz) 902
    Tx power (Watts) 20
    Tx line loss (dB) 3
    Rx line loss (dB) 0.5
    Rx threshold (μV) 0.5
    Required reliability (%) 70
    If you want to support the channel and buy from Banggood: bit.ly/2jAQEf4 (no additional charges for you)
    / andreas-spiess-7331894...
    / spiessa
  • Věda a technologie

Komentáře • 1K

  • @netd777
    @netd777 Před 7 lety +421

    60 years old but still goig on adventures and breaking records! Congratulations and Happy birthday!

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety +28

      :-))

    • @flexairz
      @flexairz Před 3 lety +11

      Its 60 years young....

    • @Roy_Tellason
      @Roy_Tellason Před 3 lety +2

      Looks like I have a few years on him. :-)

    • @rolandpeachie9807
      @rolandpeachie9807 Před 2 lety +3

      @@Roy_Tellason Same here, approx 14 to be exact... But at his age My best friend (from Middle School) and I hiked the Bristlecone Pines Trail, California White Mountains, at around 11,000ft to see a 4,000 year old Tree, but those days are now nothing more than a memory, and something to brag about I guess..This was a interesting Trek and he did get out for some beautiful countryside and set a record at the same time.

  • @charlesjames4194
    @charlesjames4194 Před 4 lety +11

    Wow, that was an impressive radio project, antenna tests, good video documentation, and detailed mapping software with the curvature of the earth.

  • @jangAckman
    @jangAckman Před 7 lety +5

    Happy birthday, Andreas! And congratulations on the record! I really like and appreciate your videos. Thank you.

  • @dwallace
    @dwallace Před 7 lety +3

    Excellent video Andreas, great work on the range, and happy birthday!!! I will have to take a look at those mapping examples and test my locations. My units will be working in forest areas, so only needing 1-2km max range. I will let you know when I get my units into the field for testing.

  • @MobiusHorizons
    @MobiusHorizons Před 7 lety +7

    Congratulations!!! Thanks so much for doing this, and sharing your experience!

  • @mikek3094
    @mikek3094 Před 7 lety +3

    Happy birthday! I have learned so much from your videos - thank you!

  • @akirakiam
    @akirakiam Před 7 lety +11

    That was awesome Mr.Spiess! You are really a inspiring person! Thank you and congratulations for you anniversary l! Greentings from Brazil

  • @bogdanSherback
    @bogdanSherback Před 7 lety +26

    Happy birthday "Guy with swiss accent"! Great content, as always!

  • @086dx66
    @086dx66 Před 7 lety +74

    happy birthday from Russia. i wish u a good siberian health! and stay always positive. thx for your videos. its always usefull or at least interesting ;) thx friend

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety +14

      Thanks. With a little Wodka, I will for sure stay healthy!

    • @hvanmegen
      @hvanmegen Před 7 lety

      Cheers.. I'll drink to that :P

  • @mostlymessingabout
    @mostlymessingabout Před 7 lety +4

    very happy for you. my heart warmed to hear you say "I got the connection"

  • @HariWiguna
    @HariWiguna Před 7 lety +2

    Wow Andreas! That's amazing! What a journey too. Congratulations on your world record, and happy birthday!

  • @voltlog
    @voltlog Před 7 lety +22

    Congratulations on the record!

  • @liverenders
    @liverenders Před 2 lety +6

    Let alone this impressive feat, what a beautiful territory with incredible history. Thanks for sharing this. These castles just got added to my travel list.

    • @AndreasSpiess
      @AndreasSpiess  Před 2 lety +1

      Glad you enjoyed it. It is definitively worthwhile on a beautiful day.

  • @ranger81de
    @ranger81de Před 7 lety +11

    First of all happy Birthday :-) and congratulations on such a long distance and the world record! Maybe you should do more field trips, it was very interesting as always. Keep your good work, it's always a pleasure to see a video from you!! Best wishes

  • @hvanmegen
    @hvanmegen Před 7 lety +1

    Comment for help.. Thank you for making these videos, Mr. Spiess :)
    Happy Birthday and congratulations on the new world record!

  • @sjp770
    @sjp770 Před 7 lety

    Happy Birthday and Congratulations! Great seeing what LoRa can do, keep the videos coming :)

  • @kadiryasar2225
    @kadiryasar2225 Před 7 lety +8

    Amazing test and results ! we're so thankful to you for this benchmark. 200km! unbelievable! Congrats.!

  • @garrypkeogh
    @garrypkeogh Před 7 lety +17

    Amazing result Andreas! Congratulations on your record and your age milestone. You have single handedly steered me towards LoRa and IoT as a next phase in my self education and I am researching daily. Really looking forward to getting some projects moving so thanks again for a very well presented story. Garry

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety +1

      You are welcome. It is a pleasure to hear, that I helped.

  • @WarrenClark
    @WarrenClark Před 7 lety

    Andreas, I am really enjoying your LoRa videos. You do an excellent job of making your teaching entertaining! Congratulations! on both your world record and your birthday! Keep up the good work.

  • @Jhinsydney
    @Jhinsydney Před 7 lety

    Happy Birthday and Congratulations, Andreas !!!!
    Awesome WORK !!!!

  • @tomstern1681
    @tomstern1681 Před 2 lety +3

    Sir, you are my favorite CZcamsr! Your videos are entertaining, very educational and aspiring! Great sense of humor, great presentation skills and lots of lots of charm! Thank you for sharing with us.

  • @alienkishorekumar
    @alienkishorekumar Před 7 lety +58

    Happy Birthday and congratulations!

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety +1

      :-)

    • @SteveWrightNZ
      @SteveWrightNZ Před 7 lety

      Good fun! A converted WIFI Grid antenna will double that range again. Rule of thumb is, 6dB = double the range. Show your experiment to the local Ham Radio club!

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety +1

      Actually, the link budget is so high with this technology that 6 db do not matter a lot (I did not believe it at first). So, the only thing which matters is line of sight. The link budget is good for more than 1000 km (without antenna gain, because this is legally not allowed on this free band).
      BTW: I am also a (inactive) Ham.

    • @SteveWrightNZ
      @SteveWrightNZ Před 7 lety

      I think there are more toys on the free bands than on the ham bands now - it is a very interesting time to play with any radio and electronics gear. The 6dB rule always applies - If you can find 6dB, you get double the range.

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety +2

      +Steve Wright In this experiment I had a connection from one place and no connection 100 m away from where I was. The difference between line of sight an no line of sight is easily 50 or more dB. You can simulate this using the link in the description. So, in theory you are of course right. But only, if all other parameters do not change. And this is not the case here because the earth is not flat ;-) And I was at the outmost possible point where the earth did not interfere with the waves.

  • @Perspectologist
    @Perspectologist Před 7 lety

    Happy birthday and congratulations on the record! Thanks for sharing your experience with us.

  • @martinvanbrabant6634
    @martinvanbrabant6634 Před 7 lety

    Congratulations with the birthday, the world records and the nice Swiss accent. Thank you for explaining everything so clearly and with so much useful details and links, already 120 times!

  • @cuserroro
    @cuserroro Před 7 lety +4

    Happy Birthday !!!

  • @mikehudson3620
    @mikehudson3620 Před 7 lety +5

    I like your antenna test! I spent some years doing radio propagation tests professionally. Don't underestimate the weather... We experienced small UHF radios working over 700km. We think it was caused by cold dry air from the stratosphere meeting warm humid air from the ground and making a perfect mirror or conduit. And it's normally longer than line of sight - check out the 4/3 rule. So good luck with a really long record. And Happy Birthday!

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety

      +Mike Hudson Thanks. I know this from 144MHz. Up to which frequency did you see this?
      What is the 4/3 rule?

    • @mikehudson3620
      @mikehudson3620 Před 7 lety

      Andreas Spiess
      Hi. I was surveying in the UHF band - around 400MHz. We did not think it was the normal temperature inversion as the effect was so extreme. On some days, it affected the microwave line-of-site transmissions which were using diversity antennas separated vertically by about 10m. You could detect the layer passing down through the beams.
      The 4/3 rule increases line of sight due to the refraction caused by the atmosphere. You used to be able to get curved paper for plotting the hills between two antennae which allowed for this and showed if they would interfere.
      en.m.wikipedia.org/wiki/Non-line-of-sight_propagation
      Short wave has a club "The million miles per watt" club - for very serious long distance propagation using the stratosphere.
      Propagation is fun and very challenging. Good luck and thanks for your very interesting videos.

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety

      Thanks for the link. I uses a few of the described things as a radio operator. But so far, I did not hear that the air inversions also work on 900 MHz. On 144, I was able to reach England from Switzerland, but with 50 W output and a Yagi. Somebody wrote, that he was able to reach Spain from Ireland on 868 MHz with a Sigfox device (25mW). This is more than 1000 km. I am not sure if I should believe it...

    • @Cicuiranu
      @Cicuiranu Před 7 lety +1

      Andreas Spiess yes you can believe it. Duct propagation over sea is really huge. Sometimes the vhf bacon of cabo verde can be heard in spain. That's more than 2500 km i think.

  • @MaxintRD
    @MaxintRD Před 7 lety

    Congratulations on your achievement and of course happy birthday!
    Thanks for this nice video. Quite exciting!

  • @brucejackson5898
    @brucejackson5898 Před 7 lety

    Happy birthday Andreas, what a big effort you've made, congratulations on your records!!!

  • @db1tau75
    @db1tau75 Před 4 lety +5

    Fun to watch! I still have the time I was walking on hills with radio sets to do range tests in good memory. I recognized the area around wegelnburg because I live near there. Did you think about going a bit more north to extend the record? Kalmit or Ludwigsturm could be possible destinations.

  • @cliftonbrown911
    @cliftonbrown911 Před 7 lety +4

    Thank you for all your amazing contributions. Would you consider doing a side by side comparison of Lora vs Sigfox? Sigfox has my city covered, (San Francisco) and seems to offer a better alternative.

  • @robfel68
    @robfel68 Před 7 lety

    Happy Birhday Andreas. Thank you alot for your videos. I belive many of us enjoy them immensely.

  • @chuckwilcox6997
    @chuckwilcox6997 Před 6 lety

    Great work on your birthday. Thanks for the work and sharing the detailed information. Very impressive LoRa distances and interesting experiments with the antennas and spreading factors

  • @akhyarsadad7565
    @akhyarsadad7565 Před 6 lety +11

    Don't skip the ads, click voluntarily if needed. that way you can support him without losing your money. This is the most insightful lora video playlist on earth!

  • @garyprice3757
    @garyprice3757 Před 7 lety +4

    awesome video. i am curious about who put the gateway on that tower. you should try and contact him and maybe an interview?

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety +1

      I think, it is the University of Applied Science of Berne

  • @jct4647
    @jct4647 Před 7 lety

    Happy Birthday and congratulations on the 2 records - hope you will entertain us for many years to come.

  • @yonaguska2050
    @yonaguska2050 Před 7 lety

    Congratulations on setting a new record, and for your birthday as well. I enjoy your videos very much. I plan on experimenting with LoRa, as soon as the equipment arrives.

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety

      Thanks! I hope, you are not disappointed. In crowded areas, the reach of course is much smaller...

  • @CharlesFormanWonderUnit
    @CharlesFormanWonderUnit Před 7 lety +9

    What about a putting a node on a weather balloon? That would be a fun video.

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety +13

      Here, we have lots of restrictions. So, this is definitively a task for our American or Canadian friens with their big open spaces...

    • @JanvanLoenen
      @JanvanLoenen Před 7 lety +5

      We did test it with a small air balloon, reached 160km +
      www.meetup.com/sensemakersams/photos/27400617/455892978/

    • @jurijmonzon
      @jurijmonzon Před 6 lety +1

      What modules and antennas did you use? I would love to repeat your experiment. Thanks.

  • @75Barmalei
    @75Barmalei Před 7 lety

    Excellent job done, as always!
    I wish you to live long in a good health, with peace in your heart, and inspiration in your mind.
    Best regards!

  • @SHo-84
    @SHo-84 Před 7 lety

    Alles Gute nachträglich! Und vielen vielen Dank für deine tollen Videos!

  • @cdhiva
    @cdhiva Před 4 lety +2

    Mr. Spiess, you are a genius. Great work. Watching your attempts, I plan to work on LoRaWAN, myself. Thank you. You truly are an inspiration! Congratulations on the record!

  • @MauroSedrani
    @MauroSedrani Před 7 lety +1

    Happy birthday Andreas and congratulations!!!

  • @davewsmith7
    @davewsmith7 Před 7 lety

    Congratulations! Excellent sleuthing on finding the castle. And Happy Birthday!

  • @bruceedwards8003
    @bruceedwards8003 Před rokem

    Just watched this ; your seriously a great presenter and inspiring, thanks for the work your doing.

  • @rubensluciano7708
    @rubensluciano7708 Před 7 lety

    Again, very nice video Andreas, rich of details. Congratulations to your record and keep doing this nice videos!

  • @robertambroz5249
    @robertambroz5249 Před 7 lety

    Andreas, Happy Birthday and congratulations for extraordinary achievement!

  • @sdplusm3
    @sdplusm3 Před 6 lety

    Happy birthday and thank you for the good video. I admire people like you.

  • @waltsteinchen
    @waltsteinchen Před 7 lety +1

    Happy Birthday Andreas !! Again an awesome video!, you're like a real engineer should be, no change necessary! ;-) .. go on for the next 60 years !

  • @kokoscom
    @kokoscom Před 7 lety

    happy belated birthday Andreas!. Great work! Great professional videos - for those who really want to learn!

  • @saifal-badri
    @saifal-badri Před 5 lety +1

    I can't tell you how much I enjoyed this video. Radio world is amazing thank you for all the effort and gas ;)

    • @AndreasSpiess
      @AndreasSpiess  Před 5 lety

      You are welcome! You should find quite some "radio" on this channel.

  • @astir8275
    @astir8275 Před 7 lety

    Happy birthday Andreas! You videos are so enjoyable!

  • @bitluni
    @bitluni Před 7 lety

    Congratulations and happy Birthday! This is a really remarkable achivement!

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety

      Thanks!

    • @bitluni
      @bitluni Před 7 lety

      I just checked and realized that where I live there are spots with line of sight to Weissenstein too. it's exactly 300km. But didn't use a tool that considers the earth curvature since I couldn't manage to register to the rm-online site.

    • @bitluni
      @bitluni Před 7 lety

      Ok, now checked with radio mobile. The earth curvature is so massive that it wouldn't even work with no obstacles and me sitting on the highest hill here.. too bad

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety

      I think, it will not be easy to top the 200km because of the fact, that you need at least a gateway on a high place and a flat surrounding. It was a coincidence that the two castles where there...

  • @thomasvnl
    @thomasvnl Před 7 lety

    Dude, congratulations, both on your Birthday and the long range you achieved! Hopefully you had a nice weekend driving all that way

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety +1

      No problem. It was interesting and I enjoyed it.

  • @markus1963nl
    @markus1963nl Před 7 lety

    What a wonderful way to spend your 60th Birthday. A great mix of experimentation, learning, incredible scenery, a bit of exercise, and great weather. Life is good! You are a legend here in the Netherlands!

  • @lucapesce3335
    @lucapesce3335 Před 7 lety

    Amazing video, thank you. Another confirmation that this kind of radio will play e big role in the next future.
    And Happy Birthday, obviously :-)

  • @electricsheep2305
    @electricsheep2305 Před rokem

    Happy birthday wherever you are, I am a big fan of your work. Thank you

    • @AndreasSpiess
      @AndreasSpiess  Před rokem +1

      Thank you! I am now 66. So this video is already 6 years old ;-)

  • @tanux66
    @tanux66 Před 7 lety

    Great video, also very funny and interesting! This is really content to share not only on internet but also broadcast in tv... Congrats and happy birthday!

  • @abhaysbharadwaj
    @abhaysbharadwaj Před 7 lety

    Happy birthday and hearty congratulations! LoRa seems to be the perfect communication method for IoT and in specific for IoT sensor nodes! And with the low power feature it's pretty awesome! 😎
    P.S. you are doing an amazing job! hats off! :-)

  • @alfredorico8026
    @alfredorico8026 Před 4 lety

    Congrats on 2 world records!!! Such great video and Happy Birthday!!!

  • @rickb06
    @rickb06 Před 3 lety

    Sir, you're an inspiration! I'm happy and proud of you! Take care and be safe!

  • @GonzaloCasas
    @GonzaloCasas Před 7 lety

    Happy 60th bday!! And congrats for the amazing records!!!

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety +1

      Thank you. This was also possible with your help!

  • @kinenbrasil
    @kinenbrasil Před 7 lety

    Happy birthday Andreas, and congrats in reaching your goals.

  • @nomadic_rider42
    @nomadic_rider42 Před 7 lety +1

    Excellent results, well worth the effort. Herzlichen Glückwunsch zum Geburtstag und Alles gute :)

  • @avalonlist
    @avalonlist Před 7 lety

    Happy birthday !!!
    And congrat for the world record.
    Always intersting to watch your channel

  • @shiv2d
    @shiv2d Před 7 lety +1

    This is incredible. Thank you for sharing. You are a real inspiration :)

  • @Wallensteiner0
    @Wallensteiner0 Před rokem +1

    Hi Andreas congratulations to your now 65th birthday and all the great interesting, inspiring and entertaining videos you did on CZcams! All the best from Carinthia, keep on! 👍👍👍😘

  • @nathanas64
    @nathanas64 Před 5 lety

    Congratulations from Chicago!
    Happy Birthday!

    • @AndreasSpiess
      @AndreasSpiess  Před 5 lety

      Thank you! It is now nearly 2 years since then. But the next birthday is around the corner ;-)

  • @awesometom8598
    @awesometom8598 Před 7 lety

    Happy Birthday and congrats! heck of a way to spend your 60th!!!

  • @3dgussner958
    @3dgussner958 Před 7 lety +2

    Herzlichen Glückwunsch zum Geburtstag und Weltrekord.
    Happy B-day and congrats to the world record.

  • @MrLunarpulse
    @MrLunarpulse Před 7 lety +1

    Amazing record and so much effort put in this project!

  • @glennextra
    @glennextra Před 7 lety

    Happy Birthday! I too am turning 60 in March
    Well done, and very interesting experiment, congratulations from Vancouver Canada.

  • @OldHector
    @OldHector Před 6 lety

    Fascinating stuff! Andreas, congratulations on your world record :-)

  • @lhxperimental
    @lhxperimental Před 7 lety

    Congratulations and Happy Birthday!

  • @laurencemunro
    @laurencemunro Před 7 lety

    Very well done Andreas! Congrats with a record on your birthday!! 🎉

    • @AndreasSpiess
      @AndreasSpiess  Před 7 lety

      +Laurence Munro Thanks! The last record was in your country...

  • @midafricam
    @midafricam Před 4 lety +1

    Excellent - congratulations on the records and thanks for sharing

  • @kevinmcaleer28
    @kevinmcaleer28 Před 5 lety

    Awesome experiment. And Happy Birthday from the UK!

  • @jorgenunes6995
    @jorgenunes6995 Před 7 lety

    Well done, again! Happy birthday Andreas.

  • @RDarrylR
    @RDarrylR Před 5 lety +1

    Can’t believe I missed this video before now but amazing work and thanks for sharing!!

    • @AndreasSpiess
      @AndreasSpiess  Před 5 lety

      You are welcome. My 62nd birthday is around the corner, so this video is already quite old ;-)

  • @pr19580
    @pr19580 Před 7 lety

    Happy birthday Andreas and well done on the world record!

  • @Eger7law011
    @Eger7law011 Před 6 lety

    Andreas, Many years of great health, your depth of understanding Electronic devices is highly appreciated, pleasant days of practical build projects with your guidance

    • @AndreasSpiess
      @AndreasSpiess  Před 6 lety

      +Eger7law011 Thank you very much for your wishes!

  • @aamerhamdani
    @aamerhamdani Před 2 lety

    It was a treat to watch. I am watching it in 2022 in my search for LoRa devices. I like your videos and your accent 🙂

  • @erwinrommel4561
    @erwinrommel4561 Před 7 lety

    Herzlichen Glückwunsch zum Rekord und zum Geburtstag. Wirklich tolle Videos ich habe mir schon viele angesehen und steige auch gerade in die Lora Technologie ein.

  • @FrerkMeyer
    @FrerkMeyer Před 7 lety

    Happy Birthday. Very entertaining video. And congratulations on the world record(s).

  • @soldumago8789
    @soldumago8789 Před 3 měsíci

    happy birthday..60 years old and going strong.. Congrats for the world record...looking forward for more and great adventure!..

    • @AndreasSpiess
      @AndreasSpiess  Před 3 měsíci

      Thank you! Actually, I am now 67. This is an old video ;-)

  • @xennelul
    @xennelul Před 7 lety

    Very very insightful! Happy birthday!

  • @mostlymessingabout
    @mostlymessingabout Před 7 lety

    happy birthday Andreas. many happy returns

  • @slavomirkundrik7199
    @slavomirkundrik7199 Před 7 lety

    Well done Andreas! Keep up the good work!

  • @bluesquadron593
    @bluesquadron593 Před 7 lety

    Happy birthday and congratulations!

  • @dullage
    @dullage Před 7 lety

    Happy Birthday Andreas, congrats on the distance!

  • @theovannieuwenhuizen5756

    Very entertaining and interesting.
    You must be very passionate about Lora!
    Kudos! You've inspired me to study Lora and develop applications.

    • @AndreasSpiess
      @AndreasSpiess  Před 4 lety

      I am generally interested in wireless communication

  • @zachreyhelmberger894
    @zachreyhelmberger894 Před 5 měsíci

    WOW!! Thank you for posting this!! This is exciting stuff!

  • @benjaminandersen1097
    @benjaminandersen1097 Před 7 lety

    just found your channel, subscribed, and wanted to say; BIG THUMBS UP, you do some awesome experiments!

  • @rre9121
    @rre9121 Před 8 měsíci

    Very cool and great work! Its a technical and practical expression of skill and determination that I admire immensely.

  • @dragofrost712
    @dragofrost712 Před 2 lety

    Hi Andreas brilliant work. Thanks for sharing your knowledge. We Younger folk need this knowledge. I learnt alot. Thanks so much for the share.

  • @ScrapeLP
    @ScrapeLP Před 7 lety

    Happy Birthday and this is an Incredible achievement.

  • @pbx192
    @pbx192 Před 7 lety

    Well done!! And Happy birthday.

  • @PierAisa
    @PierAisa Před 6 lety

    Awesome. You really are the number one. I hope that your record will be record .... happy birthday

    • @AndreasSpiess
      @AndreasSpiess  Před 6 lety +1

      Thanks. I am now more than a year older already. Time goes fast...

  • @garryhammond3117
    @garryhammond3117 Před 7 měsíci

    Happy Birthday! - Cheers!

    • @AndreasSpiess
      @AndreasSpiess  Před 7 měsíci +1

      Thank you. This was nearly 7 years ago ;-)

  • @miikakurkela5606
    @miikakurkela5606 Před 7 lety

    Gongratulations! What an excellent CZcams channel ... and so say all of us!

  • @mrmarkom
    @mrmarkom Před 7 lety

    Happy Birthday and congrats!!

  • @rafadomingz
    @rafadomingz Před 7 lety

    Amazing!! Great work - Thanks for sharing your experiments.