These radio link protocols like expressLRS are completely bepassing all guidelines. For example their frequency channel / hopping tactics are bombarding the spectrums. Making it very aggressive and causing a lot of interference with other devices. People should not use this in the field. In some countries you can be jailed for this. (This is not just radio piracy)
ExpressLRS is looking very promising. Hopefully it will do the same thing with radio protocols as OpenTX has done with the radio transmitter market; lowering costs for software development and allowing cheaper hardware with more feature.
A small question: I am thinking of using ESP32 LOLIN32 boards to connect with the LEGO poweredup modules, as they combine decent bluetooth and built-in lythium batteries on a small PCB. But the ESP-IDF suite is this bigger-than-auditable download of scripts from a Chinese company, so my brain's security leds started blinking. Is there any way to do, for example, gcc development from the debian repositories.