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Next/back button assignment moves from a frame-level "Button assignments" card into each widget's own gear-icon dialog, prefilled with a sane default at creation (photos/calendar -> advance/back, whiteboard/weather -> check_now, others -> none). At most one binding per (widget, button) now -- cross-widget execution order never mattered since each widget's action only touches its own state. New firmware capability: holding NEXT or BACK past a configurable duration (min 3s, server-side default) triggers a frame-wide action instead of the per-widget short-press one -- cycling saved layouts, refreshing all widgets, or freezing/unfreezing every photo widget (see app/global_actions.py). Firmware next/back checks gain the same hold-duration polling the combo button already had; the threshold comes from the previous wake's /frame/config fetch (persisted in NVS), since this wake's button decision happens before that request. Not done here: firmware/version.txt is intentionally left unbumped -- this hasn't been built or hardware-tested (no ESP-IDF toolchain in this environment), so no firmware release build should be triggered yet.
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.