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Explore the extreme challenges of running Erlang's BEAM virtual machine in severely constrained embedded environments through this 29-minute conference talk from Code BEAM Stockholm 2025. Discover how to fit the complete Erlang runtime, OTP, TCP/IP stack, and USB support into just 16MB of RAM while operating on an RTEMS real-time operating system powered by temperature gradient energy harvesting. Learn about the brutal trade-offs required for memory optimization, techniques for minimizing energy consumption during boot processes, and the unexpected quirks encountered when running Erlang on hardware where every millijoule matters. Examine the boot sequence of GRiSP nano from cold start, understand how energy availability impacts system initialization, and gain insights from pushing the BEAM runtime far beyond its original design parameters. Gain valuable knowledge about embedded Erlang development, extreme resource constraint management, and the practical limits of runtime optimization for developers interested in IoT applications, embedded systems, or pushing technology boundaries.
