Spent at least 30 hours on this capacitive sensor. That and sponsors' week sorta killed me. I'm pretty dissapointed.
I could write pages about all the ideas i had for this assignment but i won't cause i'm pissed off.

Here's the source code of the ATTINY15L:
efe.charge.asm

Here's the source code of the python bar graph:
efe.charge.py

The circuit board was made with a copper film cut on the vinyl cutter. The best settings at the time were force=60, speed=1.6. The electrode is a sheet of aluminum that i grinded and spot welded to the circuit board. Here's the thing being built:

Here's the thing in action: