Engineering notes from the ICARUS Satellite OBC Platform — flight software, RTOS design, and hard real-time systems from HawkLogic Systems.https://hawklogicsystems.comen-ushttps://hawklogicsystems.com/blog/how-we-fit-a-flight-computer-in-68kbhttps://hawklogicsystems.com/blog/how-we-fit-a-flight-computer-in-68kbICARUS — our satellite OBC platform — runs the full stack (kernel + OBC app + ground-link protocols) in 68 KB of flash on a Cortex-M7. No Linux. No FreeRTOS. Here's why, and what it cost us to get here.Mon, 20 Apr 2026 00:00:00 GMTflight-softwarertosicaruscortex-mobcembedded