Simplified Digispark (only usb and 1 external pin)

Simplified DigiSpark : 

- external power removed

- only keep 1 external pin

Main use to trigger USB HID Keyboard string or characters with 1 external button.

I cloned the https://oshwlab.com/ismaileren.akkus67/attiny85-devboard project to get the USB A male layout on the PCB. Be careful, everything else is changed (components as well) !

Source code and micronucleus bootloader tutorial on my GitHub :

https://github.com/charlycop/DigiSpark_usb_keyboard_Enter_key