Merge remote-tracking branch 'refs/remotes/origin/master'

extras/cad/README.md

@@ -2,7 +2,7 @@
 - `antenna_base.*` - antenna foundation, antenna spiral widing is done with 1.3mm copper solid wire on 8mm diameter scaffolding, ~8 turns with 6mm step, with this configuration resonance will be at around 400 MHz, cut with small 2-4mm incriments to move resonance to higher frequency (e.g. to desired 433 or 446 MHz), control resonance after each step with antenna analyzer when antenna cover is attached.
 - `antenna_cover_short.*` - antenna cover for 433 MHz (TPU plastic is preferred).
 - `base.*` - model for the base part of the case where board is inserted.
-- `upper.*` - upper part of the case with battery compartment.
+- `upper.*` - upper part of the case with 18650 battery compartment and combined charge 5v boost up converter.
 - `upper_no_battery.*` - upper part of the case without battery compartment.
 - `knob.*` - rotary encoder knob (TPU plastic is preferred).
 - `ptt.*` - PTT button cover (TPU plastic is preferred).