A Brief History of the Spreadsheet
https://hackaday.com/2025/12/15/a-brief-history-of-the-spreadsheet/

We noted that Excel turned 40 this year. That makes it seem old, and today, if you say “spreadsheet,” there’s a good chance you are talking about an Excel spreadsheet, …read more (https://hackaday.com/2025/12/15/a-brief-history-of-the-spreadsheet/)

Tearing Down Walmart’s $12 Keychain Camera
https://hackaday.com/2025/12/15/tearing-down-walmarts-12-keychain-camera/

Keychain cameras are rarely good. However, in the case of Walmart’s current offering, it might be worse than it’s supposed to be. [FoxTailWhipz] bought the Vivitar-branded device and set about …read more (https://hackaday.com/2025/12/15/tearing-down-walmarts-12-keychain-camera/)

Pufferfish Venom Can Kill, Or It Can Relieve Pain
https://hackaday.com/2025/12/15/pufferfish-venom-can-kill-or-it-can-relieve-pain/

Illustrative image of a pufferfish, but not one of the poisonous ones.
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/12/Puffer_Fish_DSC01257_featured.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/12/Puffer_Fish_DSC01257_featured.png?w=800">Tetrodotoxin (TTX) is best known as the neurotoxin of the puffer fish, though it also appears in a range of other marine species. You might remember it from an episode …read more (https://hackaday.com/2025/12/15/pufferfish-venom-can-kill-or-it-can-relieve-pain/)

3D Printing and Metal Casting are a Great Match
https://hackaday.com/2025/12/15/3d-printing-and-metal-casting-are-a-great-match/

[Chris Borge] has made (and revised) many of his own tools using a combination of 3D printing and common hardware, and recently decided to try metal casting. Having created his …read more (https://hackaday.com/2025/12/15/3d-printing-and-metal-casting-are-a-great-match/)

Giant Neopixel Is Just Like The Regular Kind, Only Bigger
https://hackaday.com/2025/12/15/giant-neopixel-is-just-like-the-regular-kind-only-bigger/

Neopixels and other forms of addressable LEDs have taken the maker world by storm. They make it trivial to add a ton of controllable, glowing LEDs to any project. [Arnov …read more (https://hackaday.com/2025/12/15/giant-neopixel-is-just-like-the-regular-kind-only-bigger/)

Plug Into USB, Read Hostname and IP Address
https://hackaday.com/2025/12/15/plug-into-usb-read-hostname-and-ip-address/

Ever wanted to just plug something in and conveniently read the hostname and IP addresses of a headless board like a Raspberry Pi? Chances are, a free USB port is more …read more (https://hackaday.com/2025/12/15/plug-into-usb-read-hostname-and-ip-address/)

Magnetic Transformer Secrets
https://hackaday.com/2025/12/15/magnetic-transformer-secrets/