On-board software for HAVELSAT cubesat

HAWELSAT is a 2U CubeSat developed by HAVELSAN and Istanbul Technical University (ITU) as a part of QB50 Project [1] in Turkey. During its mission, HAVELSAT will collect electron density information in its orbit and transfer this data to the ground station (GS). In QB50 program, the aim is to use all collected e-density data from all satellites to get better thermosphere models. In this article, the developed on-board software (SW) and the development phases will be briefly explained. Moreover, a summary of difficulties faced during these phases and also lessons learnt are summarized.