July 17 (Official Start)

Today, i started researching components, since the MCU on the RubberDucky is unknown (i think). I thought about doing this on an Atmega32U4, but it would be super slow + Atmel chips are expensive. So i started looking for STM32 chips with USB HID capabilities, i didn't find much, then i asked for some help in a discord server, then found the STM32F411 (thank you pera :3) Bonus on the F411, besides it being CRAZY fast, it's also the same size as a 32U4. So i could just swap it on my first concept without changing much of my original concept.

Images of the original concept: (yes, EasyEDA symbols are weird)

KiwiKey V1

After that, i added the F411, and got my first version of it:

But now i've done some fixing in the schematic, and some rerouting on the PCB (V1.1)

I still have a lot to fix though, still need to add more stuff, such as decoupling caps, et cetera.

Time spent: ~7h