Fresh air for my #summeroffice. Having no window in this small but easy to cool room requires other solutions. So today I finished tinkering this from a silent pc case fan, a Roomba air filter and some wood pieces. The result is refreshing (https://beko.famkos.net/p/Rom)
@schenklklopfer okay, deine Lösung erscheint mir etwas… umfassender :D