EnduroSat’s Onboard Computer is a compact, low-power flight computer providing command and data handling for CubeSat and SmallSat missions. Built around an ARM Cortex-M7 processor with 2x 16 GB of space-ready embedded SD NAND mass storage and 2x 2 MB ECC-capable FRAM, the OBC combines reliable computing with generous onboard data capacity in a unit weighing just 123 grams.

The flight software stack runs on FreeRTOS and ships with a full SDK, while MicroPython scripting lets operators automate time-based tasks that execute autonomously beyond ground station contact. The integrated Flight Management System module handles encryption, compression, and archiving, and the OBC supports in-orbit firmware updates, housekeeping data collection, logging, scheduling, and tasking for dependable in-flight operations.

An optional integrated NovAtel OEM 719 GNSS receiver adds real-time position (<20 m RMS), velocity (<0.5 m RMS), and 20 ns timing — extending the OBC into applications that demand precise orbit knowledge. A rich payload interface set (CAN-FD, RS-422, RS-485, SPI, I2C, UART, and 100BASE-TX Ethernet) plus 16 payload enable/disable/feedback GPIOs and a complete driver set for EnduroSat modules make integration straightforward. The unit draws from EnduroSat’s flight heritage of 3,500+ modules in orbit.