TOSLINK was developed in the early 1980s as a simple interface for sending digital audio over fiber optic cables, and  despite its age, is still featured on plenty of modern …read more (https://hackaday.com/2025/10/02/sending-toslink-wirelessly-with-lasers/)

How Hydraulic Ram Pumps Push Water Uphill With No External Power Input
https://hackaday.com/2025/10/02/how-hydraulic-ram-pumps-push-water-uphill-with-no-external-power-input/

Imagine you have a natural stream running through a low-lying area on your farm. It’s a great source of fresh water, only you really need it to irrigate some crops …read more (https://hackaday.com/2025/10/02/how-hydraulic-ram-pumps-push-water-uphill-with-no-external-power-input/)

Building a Functional Aliens Motion Tracker
https://hackaday.com/2025/10/02/building-a-functional-alien-motion-tracker/

Aliens is the second film from the legendary science-fiction series about, well… aliens. Naturally, it featured some compelling future-tech — such as the M314 Motion Tracker. [RobSmithDev] wanted to recreate …read more (https://hackaday.com/2025/10/02/building-a-functional-alien-motion-tracker/)

Building A Desk Display For Time And Weather Data
https://hackaday.com/2025/10/02/building-a-desk-display-for-time-and-weather-data/

Just about every laptop, desktop, and smartphone in your life can tell you the date, time, and current weather predictions. However, sometimes it’s nice to have simple data displayed on …read more (https://hackaday.com/2025/10/02/building-a-desk-display-for-time-and-weather-data/)

Kei Truck Becomes Tiny RV
https://hackaday.com/2025/10/02/kei-truck-becomes-tiny-rv/

Tent camping lets you explore places on foot you could never reach another way, but sometimes you want to camp with a bit more luxury. [Levi Kelly] decided to see …read more (https://hackaday.com/2025/10/02/kei-truck-becomes-tiny-rv/)

Implementing a Kalman Filter in PostgreSQL to Smooth GPS Data
https://hackaday.com/2025/10/02/implementing-a-kalman-filter-in-postgresql-to-smooth-gps-data/

Usually databases are treated primarily as fairly dumb data storage systems, but they can be capable of much more. Case in point the PostgreSQL database and its – Ada-based – …read more (https://hackaday.com/2025/10/02/implementing-a-kalman-filter-in-postgresql-to-smooth-gps-data/)

Yes, Gemini, A Wii Server Is Possible
https://hackaday.com/2025/10/02/yes-gemini-a-wii-server-is-possible/

When [Reit Tech] needed something to do with an old Nintendo Wii, he turned to Google. When the AI overview told him it could not be used as a server, …read more (https://hackaday.com/2025/10/02/yes-gemini-a-wii-server-is-possible/)

Air Quality Monitor Plays Game of Life
https://hackaday.com/2025/10/03/air-quality-monitor-plays-game-of-life/