Elixir Runs on 64KB Microcontroller Using Stripped-Down AtomVM Build

A developer attending SWEST28, a Japanese embedded systems workshop, successfully ran Elixir code on the UIAPduino Pro Micro CH32V006, a microcontroller with just 64KB of Flash and 8KB of SRAM. Inspired by a casual suggestion at the event, the developer experimented with porting AtomVM — a lightweight virtual machine for Elixir and Erlang — to the severely resource-constrained board. Because a standard AtomVM build would not fit, many features were disabled to create a minimal configuration capable of booting and executing basic code. The experiment ultimately achieved its core goal: booting AtomVM, running Elixir code, and blinking an LED via GPIO control. The working implementation has been shared publicly on GitHub and remains experimental at this stage.