I begin with my home made CNC machine. We are making this with my friend, and I have planned to submit it as a diploma work too. At first it will be only for drilling PCB boards. On the far future we will upgrade it to allow us milling stuff (like clock with pony drawing?). We are using an AVR ucontroller (Atmega328P), so no pre-made controlling will be used in this project, only some libraries. Later we might change it to the STM32 family, when we will be better in ARM programming. Yeah, ARM is not that "easy" like AVR family.
Anyway, I do not want to take too much time from you with many lines, so here is the current state of the device:

I'll keep updating the stuff as it completes slowly.