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Quiet hours only clamped what refresh_interval_s the *device* is told to sleep for -- the separate elapsed-time check in photo_queue.get_current() (used by /frame/image, /frame/photo-info, /frame/face-labels, and /api/queue) had no quiet-hours awareness at all, since it runs independent of the device. An open web UI tab polling /api/queue overnight, or just loading the page during a quiet window, would silently advance which photo is "current" on raw elapsed time alone -- nothing reaches the panel until the device wakes after quiet hours end, but the pointer moving mid-window still isn't what "don't do anything overnight" implies. get_current() now takes an in_quiet_hours flag that suppresses only the elapsed-time trigger; an unset/invalid current photo is still picked regardless (showing nothing is worse than showing something even at 3am). New _in_quiet_hours() helper in main.py, passed at all four call sites.
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.