Resolving the Low Voltage warning (aka the "lightning bolt"
Please note that this research was done on Pi 3 and lower. I don't own a Pi 4 which uses another USB spesification and different power requirements.
This is a document that was produced from a mess of personal notes in order to try to create a resource that might be useful for someone that runs into the same issues as me when it comes to powering a Pi in different scenarios.
Just some personal in order to make Unreal Engine 5 compile on Arch Linux (25th of June 2022).
Don't even bother trying to make the marketplace run. You gotta do that shit under Wine (Lutris is great for auto-setup) and copy assets over to your Linux drive.
Dependencies:
sudo pacman -S dotnet-sdk xdg-user-dir clang make git
Shows how to easily rotate (in this case invert to make orientation correct within a case) the Raspberry Pi 7" Touch Screen.
This will also update the calibration for the touch screen so it will work correctly.
References:
| /** | |
| * Parse fstab from either string (from file) or an array of lines | |
| * @author Anders Evenrud <andersevenrud@gmail.com> | |
| * @license MIT | |
| */ | |
| const parse = input => (input instanceof Array ? input : input.split('\n')) | |
| .map(line => line.replace(/\s+/g, ' ').replace(/(\s+)?,(\s+)?/g, ',').trim()) | |
| .filter(line => line.length > 0 && line.substring(0) !== '#') | |
| .map(line => line.split(/\s/g)) | |
| .map(([dev, dir, type, options, dump, fsck]) => ({ |
| <html> | |
| <body> | |
| <img id="image" /> | |
| <script> | |
| const image = document.getElementById('image') | |
| const postMessage = (data) => { | |
| top.postMessage(JSON.stringify(data), '*') | |
| } |
| // | |
| // NOTE: THIS ONLY WORKS ON "localhost" OR A HOST WITH "https:" | |
| // | |
| import osjs from 'osjs'; | |
| import {name as applicationName} from './metadata.json'; | |
| const createVideoElement = () => { | |
| const video = document.createElement('video'); | |
| video.style.width = '100%'; | |
| video.style.height = '100%'; |
| /* | |
| This is just a demonstration of how this browser hack could be used | |
| to make a "browser". | |
| NOTE: This just bypasses *some* of the ways a browser allows loading | |
| content within an iframe. Most google services etc does not work as | |
| expected, and might just crash or not load. | |
| */ | |
| import './index.scss'; |
Based on example from https://manual.os-js.org/v3/guide/framework/#react
Very basic chat application:
THIS IS JUST FOR DEMONSTRATION PURPOSES
This should make True Color (24-bit) and italics work in your tmux session and vim/neovim when using Alacritty (and should be compatible with any other terminal emulator, including Kitty).
Running this script should look the same in tmux as without.
curl -s https://gist.githubusercontent.com/lifepillar/09a44b8cf0f9397465614e622979107f/raw/24-bit-color.sh >24-bit-color.sh
| // | |
| // Just a standard OS.js application | |
| // | |
| // The "index.js" file. | |
| // | |
| import osjs from 'osjs'; | |
| import {name as applicationName} from './metadata.json'; | |
| const register = (core, args, options, metadata) => { | |
| const proc = core.make('osjs/application', {args, options, metadata}); |