I am trying to add program the kitten for the first time. I have the FTDI board connected to the kitten v0_2 board and the usb to my Mac OSX. When I make the physical connection the board makes a very high pitch sound for a moment and I do not see a port option other than bluetooth. I would like to get past this step and push some code over to the board. Any help is appreciated. I am a teacher and what to teach this to my students but most complicated project we have ever done is with the ATtiny85