AuraScope

// personal project · built in public · in progress

The idea

Take a Bluetooth LE Audio (Auracast) broadcast, receive it on an nRF5340, and present the receiver to a Zynq-7000 Linux host as a plain USB sound card. Then make the whole audio pipeline observable two different ways — from inside the kernel with a character driver I write, and from outside with eBPF — and surface the data in a small live dashboard.

The point isn't just the gadget. It's to build it as a series of small, self-contained, publishable steps that each teach one thing and each leave a tagged commit behind — so the repo history itself tells the story from first boot to full integration.

Why it's worth reading

• Auracast / LC3 on Zephyr — the new BLE Audio stack, still uncommon in portfolios.
• Real Yocto — a custom image and recipes on a Zynq target, not a pre-baked distro.
• A kernel module I actually wrote — file_operations, ioctls, sysfs, and correct locking.
• eBPF on embedded Linux — the same data the driver owns, observed from the outside, so you see the tradeoff between the two approaches.

The build, step by step

Each step links to its own write-up as it ships. Greyed steps are planned but not yet published.

Phase 1 — Foundation: Linux on the Zynq