merge cubecell experiments back into master (might delete later)

platformio.ini

@@ -9,7 +9,7 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [platformio]
-default_envs = nrf52dk ; Note: the github actions CI test build can't yet build NRF52 targets
+default_envs = tbeam ; Note: the github actions CI test build can't yet build NRF52 targets
 
 [common]
 ; common is not currently used
@@ -125,7 +125,9 @@ board = ttgo-lora32-v1
 build_flags = 
   ${esp32_base.build_flags} -D TTGO_LORA_V2
 
-; The Heltec Cubecell plus
+; The Heltec Cubecell plus 
+; IMPORTANT NOTE: This target doesn't yet work and probably won't ever work.  I'm keeping it around for now.
+; For more details see my post in the forum.
 [env:cubecellplus]
 platform = https://github.com/HelTecAutomation/platform-asrmicro650x.git ; we use top-of-tree because stable version has too many bugs - asrmicro650x
 framework = arduino