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Replaces the smart_crop_faces boolean with a 4-way display_mode select on each frame's Configuration tab (image_pipeline.DISPLAY_MODES): - Crop to fill / Crop to faces: the previous False/True behavior, unchanged (center-crop trimming excess, optionally shifted to keep faces on screen). - Stretch to fill (new): fills the panel exactly, aspect ratio not preserved -- a plain resize, no crop. - Shrink to fit (new): the whole photo visible, letterboxed with white where it doesn't fill the panel. Named-face overlay label positioning (face_labels.py, the manage menu's "who's in this photo") now goes through a shared _placement_transform() in image_pipeline.py instead of duplicating crop-box math, so label placement stays correct (and in-bounds) under all four modes, not just the two crop ones -- letterbox/stretch never crop a face out, so labels just use straight scale+offset math there. Schema migration v5 adds display_mode, backfills it from the old boolean (True/False -> crop_faces/crop_fill), and drops the boolean. Verified against the live-shaped test database: the migration (existing frames correctly preserved as crop_faces), the config page's new 4-option select, actual renders under letterbox (confirmed real white letterbox padding in the packed panel-code bytes) and stretch_fill, invalid-input fallback, and the standing legacy-device curl suite.
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 and
docs/architecture.md for how the two halves talk
to each other.
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.