During a Product Design class, [Oscar de la Hera] designed and built an LED light box that responds to music — and looks good doing it! He carefully constructed the box out of Oak with a one-way ...

Discover how to build a simple DIY projector using everyday materials like cardboard and a small flashlight or laser pointer.

Explore how a basic LED can be used as a tiny solar cell, generating measurable voltage under sunlight. This hands-on ...