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@daniel-ch73 Thank you for the questions, I'm so deep in the code that I fail document things that are obvious to me.

"Transmit Power" I can guess that "the higher the power, the longer distance is possible", but guessing is never a good idea. Do we know the range of min/max power?

Your guess is correct. Higher == further.
There are 3 settings, let's call them 0, 1, 2 and they are very closely tied to the ESP32 bluetooth API.
The values are mapped like this:

  • 0 == ESP_PWR_LVL_P3 == +3 dBm
  • 1 == ESP_PWR_LVL_P6 == +6 dBm
  • 2 == ESP_PWR_LVL_P9 == +9 dBm

The actual range achieved seems to depend on a whole bunch of factors including the build of the device itself.
+3 is the default, from my t…

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@daniel-ch73
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Answer selected by gkoh
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