RSSI being a relative value, is it valid to use this value provided by ESP8266 and ESP32 boards (WiFi.RSSI()) to compare wifi reception performance of these boards (all these boards use controllers from the same Espressif) ?
yes
Yes.
Thank you Juraj and IdahoWalker
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As long as you realize that "boards" are numerous from various manufacturers. The "on board" antenna will perform differently between manufacturers and between models. Additionally the RF radiation pattern is whacky, vertical VS horizonal VS tilting.
IMO, you will need an omidirection external antenna to gather reliable "module" performance.
so yes, comparing an esp8266 board with an esp32 board doesn't compare esp8266 with esp32, but the specific board design and antenna.
what practical use would have comparing esp8266 and esp32 on some ideal board design with optimal antenna? we do projects with real boards, not ideal boards.
I'm looking for the "gag-me" icon.
Opinion: without the knowledge of how antenna designs affect the Espressif "performance" the "yes" answer is a poor answer IMO.
- Were we talking about current, someone would call out Ohm's Law.
- Were we talking about Voltage smoothing, someone would implicate filter caps.
- Were we talking about over-clocking, someone would bring up the additional power dissipation and that would bring up numerous potential solutions and possible hardware concerns.
I hardly see how I put the thread into "overload" by mentioning that various strip antennas were involved and one simply cannot compare "reception" performance using RSSI only. To do so would be silly.
@mrburnette you are right, but I just think this is not the right thread to go deeper in this topic more than a "yes"
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