Includes US patent 2,883,619 Electrical Probe by John R. Kobbe and William J. Polits awarded on April 21, 1959 for use of a resistive center conductor.
The site was found via a link on the Tektronix wiki https://w140.com/tekwiki/wiki/Risetime_Calculator

Works only for places in Germany. See https://forecast.solar/ for a potential alternative.

Project using the camera of Android or iOS phones to detect cosmic rays.

The General Mission Analysis Tool (GMAT) is the world's only enterprise, multi-mission, open source software system for space mission design, optimization, and navigation. The system supports missions in flight regimes ranging from low Earth orbit to lunar, libration point, and deep space missions. GMAT is developed by a team of NASA, private industry, public, and private contributors and is used for real-world mission support, engineering studies, as a tool for education, and public engagement.

Experiments tracking DCF77 and MSF, using amplitude, phase and correlation to measure time with respect to GPS.

Found via https://www.meteornews.net/2022/10/26/uk-radio-meteor-beacon-project and https://www.raspberrypi.com/news/meteor-beacon-for-astronomy/

The General Mission Analysis Tool (GMAT) is an open-source space mission analysis tool. Found via https://destevez.net/2022/09/more-qo-100-orbit-determination/

Ozone sensor https://www.dfrobot.com/product-2005.html?tracking=60f546f8002be

Found on https://jao.io/blog/in-no-particular-order.html

Der Energieticker NÖ zeigt live die Energieerzeugung aus erneuerbaren Energien im Vergleich zum Stromverbrauch in Niederösterreich. Man sieht, zu welchen Zeiten NÖ mehr erneuerbaren Strom erzeugt, als im Land verbraucht wird.