Imagine the grid going down for weeks or even months. No cell service, no internet, no quick lookup when you need to know how to treat a serious wound, preserve food without power, or fix a broken tool. In a long-term disaster, knowledge is just as valuable as anything in your survival kit.
Wikipedia is one of the largest collections of practical information ever assembled. It covers medicine and first aid, water treatment, gardening, food preservation, mechanics, chemistry, history, and nearly every other subject you can think of. The problem is that it normally lives online. If the internet goes down, so does your access to all it, unless you keep a copy stored locally.
Here’s the good part. You can carry the entire English version of Wikipedia, photos and all, on a device that fits in the palm of your hand and runs off a small battery or even a solar charger. All it takes is a tiny computer called a Raspberry Pi, a memory card, and about an hour of setup. When power and the Internet are gone, you still have a searchable library of human knowledge sitting right in front of you.
We came across this project on the YouTube channel, Joshua Hunt’s World, where he walks through the whole build and proves that you don’t need to be a tech expert to pull it off. You can watch the video and view the step by step instructions below.
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What You Need
Three things are essential for this project:
- A Raspberry Pi. Either the Raspberry Pi 4 or the newer Raspberry Pi 5 works. The Pi 5 is faster for only a few dollars more, so go with it if you are buying new. If you already have a Pi 4 sitting in a drawer, that is fine too.
- A microSD card. This holds the operating system and all your files. A 256GB card is recommended. The full version of Wikipedia with pictures is close to 102GB, and a larger card leaves room for extra content like a library of books. You can get by with a smaller card if you use the text-only version of Wikipedia, which runs around 53GB.
- A power supply. The Pi 4 runs on 5V at 3 amps. The Pi 5 needs a slightly stronger 5V at 5 amps.
There are also Raspberry Pi Starter Kits that come with all of these.
You will also need a few common items to get set up: an HDMI cable, a screen or monitor, and a USB keyboard.
Step 1: Get Your Raspberry Pi and SD Card
Go to raspberrypi.com and open the Hardware page. Order either the Raspberry Pi 4 or Pi 5. Then pick up a microSD card. A 256GB card gives you plenty of space for Wikipedia with images plus room to grow.
Step 2: Download the Raspberry Pi Imager
The Imager is a free piece of software that loads the operating system onto your SD card. You cannot simply drag the files over, so this tool does the work for you.
On the same site, open the software page and download the Raspberry Pi Imager to your computer. Run the installer, choose your language, accept the license agreement, allow it to create a desktop shortcut, and let it finish. It only takes a minute.
Step 3: Write the Operating System to the SD Card
Insert your microSD card into your computer, then open the Raspberry Pi Imager and work through these choices:
- Choose Device. Select your model, either Raspberry Pi 4 or Raspberry Pi 5.
- Choose Operating System. Select the recommended Raspberry Pi OS. This gives you a full desktop, which is what you want so that anyone can use the device.
- Choose Storage. Select your SD card. If several drives appear and you are unsure which one is the card, remove it and watch which option disappears, then plug it back in and select that one. Be careful here, because this step erases the card completely.
- Start the process and let it write. When it finishes, remove the SD card from your computer.
Step 4: Boot Up the Raspberry Pi
Slide the SD card into the slot on the Raspberry Pi. Connect the HDMI cable to a screen, plug in your keyboard, and connect the power. The Pi will run through its startup sequence and walk you through first-time setup:
- Choose your country, language, and time zone.
- Set a keyboard layout.
- Create a username. Something simple like “library” works well since this is a shared device.
- Set a simple password that everyone in your household or group can remember.
- Connect to your Wi-Fi so the Pi can download the content later.
- Pick a default browser and let the system install its updates.
The update can take five to ten minutes. If it seems to slow down or pause, be patient and let it finish. When it is done, restart the Pi.
Step 5: Adjust the Screen and Update the System
Once you are on the desktop, make things easier to read by lowering the resolution. Open Preferences, then Screen Configuration, and set it to 1080p.
Next, open the Terminal (the black command window) and run this command to make sure everything is current:
sudo apt updateStep 6: Install Kiwix
Kiwix is the program that lets you download and read Wikipedia and other content offline. In the Terminal, type:
sudo apt install kiwix -yLet it install.
Step 7 (Optional): Install a Word Processor
If you want to take notes on what you read, install LibreOffice Writer. It is handy for keeping information you know you will need to reference again. In the Terminal, type:
sudo apt install libreoffice-writer -yStep 8: Download Wikipedia
Open Kiwix. At first it shows your local files, which will be empty. Switch the view from local files to all files so you can see everything available to download.
Browse by category and find Wikipedia. You will see two main options: the full version at around 102GB that includes pictures, and a smaller text-only version around 53GB. Choose the full version, go to the right side of the listing, and start the download.
While you are here, you can add other useful content too. The catalog includes emergency preparedness guides, medical references, repair manuals, and the Project Gutenberg Library, which holds thousands of classic books in the public domain. Add whatever fits on your card and suits your needs.
Step 9: Use Your Offline Library
Once your downloads finish, open any item in Kiwix and start reading. Search Wikipedia the same way you would online. Look up water purification, first aid, food preservation, or anything else, and browse the linked articles and diagrams, all with no internet connection required. When you are done with an article, go back or close it to return to your library.
That is the whole project. In under an hour of hands-on work, you have a searchable copy of Wikipedia and an entire book library that keeps working when the network does not.
Making It Portable and Off-Grid
The real payoff for preppers is that this setup does not need wall power to run. A Raspberry Pi draws very little energy, so it can run off a portable power bank. Look for a battery rated at 10,000mAh or higher with USB ports that output 5V at 3 amps for a Pi 4, or 5V at 5 amps for a Pi 5.
Paired with a small screen, a battery like this can power the whole unit for several hours on a single charge. Because the Pi charges at low voltage, even a modest solar panel can keep it running, something you cannot say for most laptops. That makes it a genuine grid-down knowledge source rather than just a fun gadget.
One word of caution if you build a portable screen setup: screens often need a specific voltage, and some builders use a boost converter to step USB power up to what the screen requires. Always match the exact voltage your screen is rated for and confirm the cable polarity is correct. Supplying too much voltage can permanently destroy your equipment, so research your specific screen before wiring anything.
Final Thoughts
Most preppers stock food, water, and gear, but knowledge is the one resource that never runs out once you have it stored. A Raspberry Pi loaded with Wikipedia and a library of books gives you a self-contained reference you can power off a battery or the sun, ready for whenever you need it. It is affordable, it is simple enough for anyone in your group to use, and it turns a device the size of a deck of cards into a survival library.
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