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In this episode, Tim Bird (Sony) joins us to discuss Linux in space:
Tim’s path from early embedded Linux at Lineo (Sharp Zaurus) to 20+ yearsat Sony on cameras, TVs, phones — and now Sony’s space work (Space
Communications Corp, the SLIM micro rover, and the STAR SPHERE satellite).
How much Linux is already in orbit: ~50% of satellites by project, ~90%+ byraw count thanks to Starlink’s 10,000+ Linux-based satellites.
The Space Grade Linux (SGL) project: modeled on Automotive Grade Linux,currently an ELISA work group, targeting a standalone Linux Foundation
project in 2026. Delivers a meta-sgl Yocto layer with planned integrations
for Space-ROS, Core Flight System, and F Prime.
The “big five” challenges of space — radiation, thermal cycling, vacuum,launch vibration, and no service calls — and how commodity hardware
(Ingenuity’s Qualcomm processor, Perseverance’s base station) is pushing
past traditional rad-hard designs.
Emerging work on fault-tolerant file systems (FTRFS, ZFS), QEMU-basedradiation simulation, OTA updates at fleet scale (SpaceX Starlink), and
why AI workloads on orbit favor a general-purpose OS.
How to get involved: monthly SGL calls, the meta-sgl repo atgithub.com/elisa-tech, and the BeagleV-Fire
reference board.
Advice for newcomers: embedded is in a golden age — start cheap (RaspberryPi, Arduino-based kits like CrunchLabs), blink some LEDs, and grow from
there.
Discuss this episode at our