[Elecraft] ACC1 via Bluetooth HC05 instead of KXSER ?

[John Newgas]

I want to use my KX3 with a 12” Macbook  for FT8 and other digi-modes but it has only one USB port. 
I thought it would be elegant and lightweight use a HC05 serial to bluetooth adaptor  module for the ACC1 interface to avoid cables like the KXUSB or KXSER.

The HC05 is designed for Arduino level 0 volt low and 3.3 volt high. 

Has anyone tried one of these  directly with a KX3 ACC1 but without a MAX232 level shifter ?  Before building a small circuit board i thought it worth asking if anyone else has already tried as I am naturally lazy type.

John N