In September, we visited the Computer and Solar Training Center of Linux Friends (ALF) in Limbe, Cameroon. Initiated by Michel Pauli, this open-source school offers an alternative approach to education, research, and manufacturing, fostering a locally adapted, culturally relevant, and sustainable ecosystem. Over three intensive weeks, we taught and learned solar panel production using local resources. On our way back, we spent a few days in Douala with Gisele Yitamben and taught at her school, successfully testing reflow soldering with a Fresnel lens and sunlight together with students.