docs: add MIT license and README
Co-authored-by: Cursor <cursoragent@cursor.com>
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LICENSE
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LICENSE
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MIT License
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Copyright (c) 2026 cottongin
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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README.md
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README.md
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> [!IMPORTANT]
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> This project was developed entirely with AI coding assistance (Claude Opus 4.6 via Cursor IDE) and has not undergone rigorous review. It is provided as-is and may require adjustments for other environments.
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# Immich Frame
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An ESP32 firmware for the [M5Stack PaperColor](https://shop.m5stack.com/products/m5paper-color-esp32s3-dev-kit) e-ink display that turns it into a digital photo frame powered by your [Immich](https://immich.app/) server.
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## Features
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- **Photo cycling modes** -- random, chronological, reverse-chronological, favorites-weighted, and recency-weighted
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- **Deep sleep with batch caching** -- fetches multiple photo IDs per wake cycle to minimize network calls and extend battery life
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- **6-color e-ink rendering** -- Floyd-Steinberg dithering calibrated to the Spectra 6 palette with blue noise smoothing
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- **Portrait pairing** -- automatically pairs two portrait photos side-by-side
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- **Metadata overlays** -- date, time, location, people, album, and camera info as caption bars or corner badges
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- **Web UI** -- configure all settings, manage albums, trigger actions, and download wake logs from your browser
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- **Wake logging** -- persistent CSV log of each photo cycle that survives reboots and deep sleep
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## Hardware
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- [M5Stack PaperColor](https://shop.m5stack.com/products/m5paper-color-esp32s3-dev-kit) -- ESP32-S3R8 (16MB flash, 8MB PSRAM), 4" 600x400 Spectra 6 e-ink display, 1250mAh battery, 2.4 GHz Wi-Fi
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## Requirements
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- [PlatformIO](https://platformio.org/) (CLI or IDE plugin)
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- An [Immich](https://immich.app/) server with an API key
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## Getting Started
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1. Clone the repository:
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```bash
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git clone https://code.cottongin.xyz/cottongin/immich-frame.git
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cd immich-frame
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```
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2. Build and flash:
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```bash
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pio run -t upload
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```
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3. On first boot the device creates a `PaperColor-Setup` WiFi access point. Connect to it and open `192.168.4.1` in your browser.
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4. Enter your WiFi credentials, Immich server URL, and API key. The device reboots and begins displaying photos.
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## Usage
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The PaperColor has three user buttons along the top edge (left to right: Top, Up, Down) and a power button on the side.
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**Single press:**
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| Button | Action |
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|--------|--------|
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| Top | Show a random photo |
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| Up | Next photo |
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| Down | Play / pause slideshow |
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**Combos and holds:**
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| Input | Action |
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|-------|--------|
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| Top double-press | Enter deep sleep |
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| Top + Down hold (3s) | Enter deep sleep |
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| Up hold (5s) | Factory reset (erases all settings, reboots) |
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**LED feedback:**
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- White flash on any button press
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- Red flash when entering deep sleep
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- Green pulse while charging
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- Orange pulse at low battery, red pulse at critical
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**Deep sleep:** In deep sleep mode the device wakes on a timer, fetches and displays a photo, then sleeps again. The interval and batch size are configured via the web UI. Press the power button to wake manually.
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## Configuration
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Once connected to your network, access the web UI at `http://papercolor.local` to manage:
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- **Slideshow** -- interval (2m to custom), cycling mode, image quality, deep sleep batch size
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- **Display** -- metadata overlay content and position, translucent badge backgrounds
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- **Albums** -- filter photos by specific Immich albums
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- **Device** -- sync time, download/clear wake logs, deep sleep, reboot, factory reset
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## Tools
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The `tools/` directory contains standalone HTML utilities for analyzing wake log CSV files:
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- `log-viewer.html` -- chart and table view of a single wake log
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- `log-compare.html` -- side-by-side comparison of multiple wake logs
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Open them directly in your browser; no server required.
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## License
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[MIT](LICENSE)
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