How ExpressLRS works - look under the hood

In this video I will share as much information as I can about ExpressLRS protocol principles algorychms and technical aspects
There are a lot of information in the internet how to config ELRS or how to establish ELRS connection, but unfortunately there are almost no information about background. Lots of aspects of ELRS work but no answers why these aspects appear. So I have investigated it a lot and now will try to share my findings

So

00:00 - what this video about
02:43 - what is ELRS, requiements, background
09:19 - LoRa modulation, phisics, packet rate and range
19:36 - packet formats and what it affects
37:20 - Hybrid, Wide formats, differences, aspects
41:24 - packets sequence
42:49 - telemetry
45:08 - difference between ELRS v2 & v3
45:43 - Resolving collisions - bind phrase, uid, fhss, domain...
56:52 - Hardware. difference between SPI, serial ELRS
01:07:45 - conclusions

Video effects - @mrBububu (Telegram)

https://peterokeyfpv.tilda.ws/

#fpv #elrs #expresslrs