ESP32 WiFi Range Testing - 10km using Directional Antenna
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- Опубліковано 7 кві 2017
- How to send arbitrary data by exploiting a function in ESP32's WiFi Stack: github.com/Jeija/esp32free80211
Consumer grade WiFi hardware being able to decode down to "femtowatts" of signal strength might be a bit exaggerated, but e.g. the USB WiFi adaptor in this video has a receiver sensitivity of -99dBm @1Mbps which is approx. 100fW. If we count the directional antenna as part of the receiver and add the antenna gain to that figure (this part of the calculation is somewhat disputable), we get the less-than-femtowatts mentioned in the video.
English subtitles for this videos are available, translations are always welcome!
The camera recording code is based on igrr's esp32-cam-demo: github.com/igrr/esp32-cam-demo
More speifically, I'm making use of the modified version by Oitzu with OV2640 JPEG support: github.com/Oitzu/esp32-cam-de...
The animations in this video were created using 3blue1brown's amazing manim software (github.com/3b1b/manim). Check out some of his mathematical videos on his channel: / 3blue1brown
If you like animated math videos, this video of mine might also be of interest to you: • How to make the Minecr...
The Guy with the swiss accent has gone Back to the Future
Dear author, would it be possible to publish 1) the final code that actually streams the jpeg data from esp32 with that one-way data stream and 2) some info how your notebook is able to receive it in that "monitor" mode? It would really-really helpful.. The published code (broadcasting some rickrolling SSIDs) is not really helpful to understand how the final project works. Thanks!
I'll pay whatever, so i can have internet from Starbucks at my home......
IS this fake or real? Anyone done with proof?
that is wimax
Interesting
It just 90 or 150 km
Anyone else get pops and crackling in the video
wow dude 😲
Awesome! I am currently tinkering with an ESP32 + Bluetooth Low Energy and am now very happy that I bought a few more than I actually need. Looks very promising and isn't even really 'done' yet.
Woow outstanding results!!!
This was very informative. Thank You! Just getting started with LoRa and will bookmark and favourite this vid.
What a good test! That's a huge distance. Keep sharing with us your projects with Esp32.
a video full of information. very nice. ive tinkered with 433 Mhz modules, but never came across all these formulas, which wouldve helped me a great deal
wow i thought you have two of these antennas! Impressed how far the signal goes from the esp.
great project! greetings from 10km further away :)
that is damned impressive I would never have thought of this.. Well done fellows.. well done indeed!
This great!. Most interesting part is the ONE WAY telecommunication via Wi-fi!. While watching the video i asked my self "but wifi is bi-directional... how can??" and then you answered the question !!! :)
SUBSCRIBED, i love these kinds of channel, fun learning
Also the conditions are really favourable because transmitter is on the hill. If terrain was flat, both receiver and transmitter would need to be raised high to to ensure the Fresnel zone is not obstructed. By the way it is possible to play with the polarisation of the signal by turning antennas 90 degrees to enhance the signal quality.