Engineers build robotic fish that swim, dock and recharge themselves with no feeding required

Watching fish glide silently around a tank is one of the most relaxing hobbies a person can pick up, but keeping an actual ...

Engineers create 3D-printed robotic fish that swim, play and recharge themselves through automated charging systems. Here's all you need to know

Engineers have developed robotic fish that mimic real aquatic life, offering an aquarium experience without the upkeep. These miniature submarines, powered by Arduino and guided by an overhead camera ...
Hackaday

DIY SI5351 Radio Tunes In SW, MW, And More

There are plenty of radios you can buy that pick up MW and SW bands if that’s what you’re into. Or, you can follow [mircemk]’s example, and whip one up yourself instead. The build employs an ESP32 as ...
Circuit Digest

Autonomous Robotic Fish Combines Computer Vision and Wireless Charging

A YouTube channel named CPSDrone has developed a fully autonomous robotic fish capable of operating without direct human ...
electronicsforu

Fritzing: A Practical EDA Tool for Rapid PCB Prototyping

An intuitive EDA tool that transforms breadboard prototypes into schematics and fabrication-ready PCBs. Design, document, and validate electronic circuits before building the actual hardware.
Hackaday

Hackaday Europe 2026 – Building A Retro PC From Scratch

If you’re big into retrocomputing, you probably spend a lot of time chasing parts and machines on online classifieds or ...

I built a whole-home ad blocker with a $7 ESP32-S3 board - and it took just minutes

I built a whole-home ad blocker with a $7 ESP32-S3 board - and it took just minutes ...