via Freenode IRC:

04:36 --> pttx (~ptx@anon-41-238.vpn.ipredator.se) has joined #scuttlebutt
04:49 <pttx> Hi! I'm not really involved on ssb/patchwork itself so I thought I'd post this here. I built a prototype solar powered offline ssb pub that could be dropped off
in remote areas. Maybe this is interesting to some people here. If you want to check it out you can find the project page at http://fab.academany.org/2019/labs/kamplintfort/students/florian-schaefer/web/html/project.html
05:22 <decentral1se> pttx: cool!
07:04 <-- pttx (~ptx@anon-41-238.vpn.ipredator.se) has left #scuttlebutt ("Leaving")

Pictures from linked web page:

Scuttlebutt geocaching! :D

So, I went to its page, and quickly found %/OnzsXm... which is the author's post on scuttlebutt.

@krächz cool! Nice project.