Does anyone have any experience with the Bluno Beetle? I think I am either blind, or this thing is super poorly documented or almost entirely incapable of any professional prototyping at all.

2 questions: Does anyone have any experience with setting advertising packets on this thing.

Can someone recommend an AVAILABLE Arduino with BLE that can manage to actually be LE and run off a small battery? My first prototype I was "lucky" to be able to get Lightblue Bean. It has good documentation but VCC is battery (under load it seems to be about 2.7 Volts with a fresh 2032) output which severely limits what you can use with it. Trying to prototype using a max31865 amplifier breakout board.