This is a complete tangent, but a photographer recently captured what is likely the all-time best shot of the ISS.

https://old.reddit.com/r/spaceporn/comments/1lfgtiw/on_sunda...

Really neat! If you're interested in adding clouds to your basemap I built a service [0] which generates free, almost-live cloudmaps (with alpha channel or precomposited onto a Blue Marble image) as part of my own ISS tracker project

[0] https://github.com/matteason/live-cloud-maps

Aaaw, this only displays the position on a screen :( I was hoping for the cool version where a small arm is physically pointing at the ISS.

This looks like a fun project. Any reason for using resistive touch model?

Looks like a fun tinker project. Could be easily extended with a GPS receiver to show your location on the map.

Another variant of the generic:

"Read a REST endpoint via HTTP and draw it on a display with LVGL"

But also funny because OP used two MCUs, when a single ESP32 could do all of this.