Libre Space Foundation is designing an open-source hardware and software family of
PocketQube format satellite modules. We are focusing on the main module including typical
OBC and COMMS functionality delivered using modern and high capable MCUs (STM32) and
reconfigurable COMMS ICs (AX5043). Data logging and power management functions are also
present. We are following the mechanical specifications of the proposed PQ9 standard while
adapting the electrical and application layers to meet modularity and compatibility needs.
Several design aspects will be addressed including subsystem and software design for
reusability and alternative inter-subsystem communication methods to the proposed RS485
communication of the PQ9 standard.