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Create your own off-grid library
https://wrolpi.org
4f06dfe9c8
Estimates a solar array's typical-year production from a location and the panels; everything else has defaults under an optional "Fine-tune" section. The model works from 12 monthly averages: Klein's average day per month, the Erbs monthly diffuse fraction, Collares-Pereira & Rabl / Liu & Jordan hourly split, HDKR transposition for fixed, single-axis and dual-axis arrays, then PVWatts' ASHRAE incidence loss, SAPM cell temperature, DC power, system losses and optional inverter. "Best for the year" and "Best for winter" sweep the tilt. Sunlight, diffuse, albedo and temperature come from NASA POWER's 2001-2020 climatology on a 1 degree grid, packed into app/public/data (3.1 MB, ~1 MB gzipped) by scripts/build_solar_climatology.py and fetched only when the calculator opens. Users can replace it with their own monthly values. Every setting lives in the URL, with defaults left out, so the Share button shares the whole configuration. Against PVWatts v8 for a 1 kW fixed array: Phoenix +0.6%, Seattle +8.8%, Anchorage +8.0% annually; these are recorded as tests. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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WROLPi
Create your own off-grid library.
WROLPi is a self-contained collection of software to help you survive the world Without Rule of Law.
WROLPi is intended to be run on a Raspberry Pi with an optional external drive attached. It serves up it's own Wi-Fi network so that any user with a laptop/tablet/phone can connect and use the library created by the maintainer.
Table of Contents
Features
- Videos
- Web Archives
- Maps
- Wikipedia
- File search
- eBooks (EPUB / PDFs)
- Wi-Fi Hotspot
- Universal search
- Food Inventory management
- One-Time pad generator, encrypter/decrypter
- Synchronizer/duplicator
- Food storage calculator
Module features matrix
| Module | View | Search | Download | Project |
|---|---|---|---|---|
| Videos | yes | yes | yes | yt-dlp |
| Web Archives | yes | yes | yes | Singlefile |
| Wikipedia | yes | yes | yes | Kiwix |
| eBooks | yes | yes | planned | EPUB/PDF |
| Map | yes | yes | yes | Protomaps |
| Podcasts/Audio | yes | planned | planned |
Demo
Download
Images are available at wrolpi.org
Try WROLPi!
You can try out WROLPi by running the docker containers.
- Install docker-ce and docker-compose
- Copy the latest WROLPi code.
git clone https://github.com/lrnselfreliance/wrolpi.git
- Change directory into the code base.
cd wrolpi
- Initialize git submodules
git submodule update --init
- Build the containers.
docker-compose build --parallel
- Create volumes.
docker volume create --name=openstreetmap-datadocker volume create --name=openstreetmap-rendered-tiles
- Initialize the database (SQLite in the media directory).
docker-compose run --rm api db upgrade
- Start the docker containers.
docker-compose up
- Browse to WROLPi.
More Docker documentation is available in docker/README.md
Install WROLPi
Full installation instructions are in INSTALL.md. Pick the option that matches your hardware:
- WROLPi Portable (Live USB) — boot a complete WROLPi from a USB stick on any x86 PC or laptop. Nothing is installed to the computer; the first boot creates a persistence partition on the USB so your library, database, and configuration survive reboots.
- Debian 12 — install WROLPi onto an x86 PC or laptop.
- Raspberry Pi — install WROLPi onto a Raspberry Pi with an external drive.
- Docker — run the WROLPi containers on an existing Linux host.
Charter
Guiding Principals
- Storage is cheaper than power.
- Two is one, one is none.
- Run silently.
- Primary, secondary, tertiary.
- Secure as a bookshelf in your home.
Physical properties
- A WROLPi instance should be capable of running with a minimal of hardware:
- Raspberry Pi
- SD card
- External USB hard drive
- Power supply and cables
- Wi-Fi USER device such as a phone, tablet, or laptop.
- A WROLPi instance should consume a minimal amount of electricity during WROL event. It is expected power will be scarce when WROLPi is needed most.
User expectations
- A WROLPi instance should be run and maintained by a person (MAINTAINER) with a moderate amount of Linux and Raspberry Pi experience. It is expected that they should be able to do this using only the documentation on their WROLPi.
Software properties and capabilities
- A WROLPi instance should be able to "factory-reset" itself without any outside services.
- WROLPi should function completely without any internet services.
- A user should have easy access to their data if WROLPi fails:
- For example, a user can watch their videos by navigating a short and intuitive directory structure and opening the video in their preferred video player.
- WROLPi should be self-documented. The UI should contain a tutorial for USERS as well as the MAINTAINER.
- If the UI isn't functional, the code should be documented such that a user can restore functionality.
- WROLPi should favor pre-processing, rather than processing during a WROL event. Such as re-encoding a video, or processing captions. This is to ensure that when a user adds content during non-WROL time, the processing for optimum performance is already done for a WROL event.
Join!
