i started working on the pcb. i still haven't decided if i want to do the rf-signaling myself or use an esp-module, but here it is:

the screen i ordered is an .96" 20-pin ssd1306 from alibaba and should only need those two passives (we'll see about that one)

the crystal is also not finalized, and i will have to move the esp closer to the antenna.

i plan on "surface-mounting" regular through-hole headers on the bottom side and trimming them short before soldering them through the raspberry.