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

It leaves bruises through a sweatshirt. There is a man who built a Nerf gun with that kind of power. In February 2026, a project featured on Hackaday quietly became a topic of conversation. It was an ...

Engineers have developed robotic fish that mimic real aquatic life, offering an aquarium experience without the upkeep. These ...

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The first known use of humans using wind to perform mechanical work with machines dates back to ninth-century Persian windmills. But if we count sailing vessels among those machines, the history goes ...

💧 An IoT-based Smart Water Meter system for real-time monitoring of water quality (pH, TDS) and flow rate using ESP32 and Arduino UNO. It includes automatic motor control, cloud logging via ...

If you grew up playing with LOGO on an old 8-bit computer, you’re probably familiar with the concept of a drawbot. It’s a simple robot that drags a pen around to draw on paper. [Tim] decided to build ...

For a long time, the world of hobby RC cars was based on the premise of 'buying it and running it as is.' You assemble a Tamiya kit, buy a transmitter, charge the battery, and drive. That has been ...

The Joule Thief Circuit is a simple and clever electronic design that can power an LED using a nearly dead battery.