These are the best budget projectors under $300, with built-in streaming, adjustable stands, and easy setup for your home.

Need a compact, capable projector you can take with you for presentations on the road—or just tote from room to room, or to the backyard for movies? Here's a look at the top-rated models we've tested.

Building an automated attendance system using ESP32-CAM is a practical, affordable way to solve this problem for classrooms, ...

Recent Arduino projects showcase increasingly sophisticated multi-sensor integration, from multiplexers solving I²C address conflicts to interactive hubs with multiple modes. Developers are pairing ...

Proper waste sorting is very important for keeping our neighbourhoods clean and saving resources for the future. When we mix ...

Hyderabad: A classroom activity on renewable energy saw Grade 7 students build a simple solar panel tracker to understand how ...

Power management can make or break your Arduino project, especially when running on batteries. From selecting efficient voltage regulation to using deep sleep modes, small changes can deliver huge ...

If you were to point to a single device responsible for much of Hackaday’s early success, it might be the Arduino Uno. The ...

LED candles are neat, but they’re very suboptimal for wish-making: you can’t blow them out. Unless you take the circuit from ...

Clash of the Sci-Tech Champs” culminated in an exciting Robotics Challenge on March 8, 2025, at De La Salle Santiago Zobel ...

We may receive a commission on purchases made from links. Roku has its hands in just about every corner of the consumer tech space. From Roku streaming sticks and smart TVs to security cameras and ...

Schematics diagram + PCB diagram (KiCAD 9) and case 3D model (Blender) are also provided. This project is a work-in-progress. Based on the well-known TransistorTester work of Karl-Heinz Kübbeler.