tfaour
4e8c6e534b
deb.nodesource.com started intermittently 403ing today on both its setup_*.x scripts and its GPG key (confirmed directly, not just via CI -- some setup_NN.x paths 403, others 200, no consistent pattern), and the curl-piped-into-bash install pattern silently swallowed that failure instead of breaking the build loudly: curl -f exits non-zero on a 403, but bash then runs on empty stdin and exits 0, so the RUN kept going into a broken fallback (Debian's own split nodejs package with no bundled npm) rather than stopping. This base image now tracks Debian trixie, whose own nodejs package (20.19.2) is inside jsdom 29's engines range and clears express/ resvg-js's much lower floors -- the version gap that originally required routing through NodeSource is gone, so this drops that whole external dependency (and the curl/gnupg install-then-purge dance) rather than just swapping to a different NodeSource script.
ESPresso Frame
A DIY e-ink photo frame: an ESP32-C6 pulls photos from your Immich library and displays them on a 7.3" full-color e-paper panel, waking on a timer to refresh and spending the rest of its time in deep sleep.
- No cables to a computer, no SD card shuffling. Provisioning is a captive portal with a QR code drawn on the panel itself -- scan, join, fill in your WiFi and server address, done.
- The frame never decodes an image. A small self-hosted server does all the work (pulling from Immich, cropping, dithering, packing into the panel's exact pixel format) and hands the device a stream it can write straight to SPI. The ESP32-C6 has no PSRAM and not much SRAM to spare -- keeping it a dumb display client is what makes that workable.
- Crops toward faces, not just the center, using face bounding boxes Immich already computed for its own People feature -- no bundled face detector.
- Refresh interval and album are configurable from a web UI, no reflashing needed to change them.
Hardware
- ESP32-C6 dev board (8MB flash)
- Waveshare 7.3" E Ink Spectra 6 (E6) panel -- 800x480, 6-color, SPI
See docs/hardware.md for wiring,
docs/architecture.md for how the two halves talk
to each other, and docs/widgets.md for the server's
placeable photos/calendar/whiteboard widget system.
Getting started
server/-- run the FastAPI server first (Docker Compose, points at your Immich instance). Seeserver/README.md.firmware/-- build and flash the ESP32-C6, then scan the QR codes it draws on first boot to provision it. Seefirmware/README.md.
Repo layout
firmware/ ESP-IDF project for the ESP32-C6
server/ FastAPI server: Immich -> crop/dither/pack -> the frame
docs/ Wiring and architecture notes
License
MIT -- see LICENSE. A few small pieces of vendored
third-party code (a QR code generator, a bitmap font table) keep their
own permissive licenses; see LICENSE for details.
Built with substantial assistance from Claude Code.