Three new references this month.

ROS 2 robot arm control

ros2-ufactory-lite6 runs ROS 2 to drive a uFactory Lite6 robot arm from a container. The hardware binding is flexible — it's validated across a broad target set (i.MX8MP/i.MX91/i.MX93, Raspberry Pi 5, RZ/V2N, STM32MP257, Rubik Pi 3, Grinn Astra) and is meant to be extended beyond the listed boards.

Prometheus metrics exporter

pi-metrics-exporter is a Rust Prometheus exporter for the Raspberry Pi (Zero 2 W, 4, and 5) — a compact monitoring reference that exposes device metrics for scraping.

Per-app pinned Python with uv

python-multiversion-uv pins a specific Python version per application using uv, so multiple apps can run different, independently-pinned interpreters on one device — with cross-compilation handled in the build. The reference goes further and turns a presence-sensing fleet into a NATS-backed data pipeline, showing the multi-version setup doing real work end to end.