https://www.legroom.net/howto/wii
Wii hacking has become a hell of a lot easier since Nintendo abandoned the console and stopped pushing endless updates that stopped common hacks working without actually improving the console's functionality. And since the Wii Shop and all the online functionality has been discontinued too, hacking has become essential if you want to use the Wii's full capabilities.
Complete guides to homebrew and custom firmware for various devices.
Pretty comprehensive documentation of the Gameboy's hardware and that of related peripherals (eg the Gameboy Printer).

https://www.ifixit.com/Device/Eee_Pad_Transformer_Prime_TF201
Still the best tablet/laptop combo over 10 years later.

https://www.ifixit.com/Device/Asus_Eee_PC_1005HA
How to fix/maintain the most under-rated laptop of the last 20 years.
http://tuxnes.sourceforge.net/gamegenie.html
Game Genie codes. Like VideoPlus, but with more obfuscation.
https://projects.raspberrypi.org/en/projects/fart-detector
"All kids understand that farts are funny. As we grow older, some of us lose our sense of humour in this area. You’ll be glad to hear that we believe that building a real working fart detector has both educational and comedic value."
https://projects.raspberrypi.org/en/projects/build-your-own-weather-station
If you have some of the measuring implements for the Raspberry Pi Weather Station but not the HAT (which was only distributed to schools), then this page will show you how to actually use the damn things.
https://coral.ai/projects/bird-feeder
This project teaches you how to build a smart bird feeder that uses an image classification model to identify birds and animals frequenting the feeder, records their visits, and deters squirrels from stealing bird seed.

https://github.com/dresden-elektronik/deconz-rest-plugin/issues/405
Zigbee sniffing on the Raspberry Pi
https://www.raspberrypi.org/forums/viewtopic.php?t=23440
Banner for SSH logins

https://www.instructables.com/id/PiAnyWhere-4G-LTE-Hat-for-the-Raspberry-Pi
IOT BIT (Formally Known As PiAnywhere V1.31) 4G & LTE Hat for the Raspberry Pi : IOT BIT 4G & LTE Hat for the Raspberry Pi 4G (100 mbps down/ 50 mbps up) – Ultra fast internet connectivity for your raspberry pi, excellent for large downloads and video streaming. TheIOT BIT 4G & LTE Hat for the Raspberry Pi Beta provides …
https://www.notsosecure.com/sql-injection-lab
In 2015, we launched a SQLi lab for attendees to learn SQLi. The challenges ranged from Basic to advanced. While, we no longer support the lab, we have decided to make all the content freely available. Note: some of the techniques described here may not work in the latest edition of the database(s). Questions: All the Questions / Challenges for the Lab Answers for challenges: Challenge 1: Basics of SQL Injection [DB: Mysql, Level: Basic] Challenge 2: Comments in SQL Injection [DB: MySQL, Level: Intermediate] Challenge 3: How “or” & “and” clauses work?

https://www.youtube.com/watch?v=rpWrtXyEAN0
Enjoy the videos and music that you love, upload original content and share it all with friends, family and the world on YouTube.

https://learn.adafruit.com/raspberry-pi-physical-dashboard?view=all
Making a funky 1970s-sci-fi-style readout with a Pi and some 7SDs/motors.
http://blog.soton.ac.uk/webteam/2014/01/31/location-independent-software
Blog post by TIDT.
https://www.cyberciti.biz/tips/linux-write-sys-v-init-script-to-start-stop-service.html

https://m.bulbapedia.bulbagarden.net/wiki/Save_data_structure_in_Generation_III

https://forum.xda-developers.com/transformer-tf700/development/rom-t3457417
KatKiss ROM Nougat 7.1 Release Asus TF700T - TF201 This rom is an aosp based rom with my own additions on top of it. The main motto of the rom being Kiss. Even though the Meerkat could give you a kiss, it stands for Keeps it...

https://forum.xda-developers.com/showthread.php?t=2627965
Kitkat ROM for Dad's tablet