PCBs are in!
I'm still waiting for the 100nF decoupling capacitors, but I couldn't wait! I already assembled the first board.
I know, the soldering job is sloppy, my trusty Weller died on me, I had to use a plain old mains powered iron... My SMD skills aren't very good either.
The ATMega didn't get recognized by the ISP at first, some pads weren't correctly soldered. After a few tries and two different programmers, I managed to get a successful flash.
The buttons work fine, OLED doesn't have any glitches, and the USB-to-Serial converter works as planned. I'm still getting some errors during the operation of the COM port, I think it has to do with the missing decoupling caps... I'll see how it goes once they come in.
Now, off to write some software and run tests!