  The Daedalus 2 mission aboard REXUS 29 is a technology demonstrator for an
alternative descent mechanism for very high altitude drops based on
auto-rotation. It consists of two probes that are ejected from a sounding
rocket at an altitude of about 80 km and decelerate to a soft landing using
only a passive rotor with pitch control. This type of autonomous, scientific
experiment poses great challenges upon the electronics subsystem, which include
mechanical stress, power system reliability, sensor redundancy, subsystem
communication, and development procedures. Based on the data gathered in
Daedalus 1 multiple new approaches were developed to fulfill these
requirements, such as redundant communication links, mechanical decoupling of
PCBs and fault-tolerant power source selection.
