Discover how to build a simple DIY projector using everyday materials like cardboard and a small flashlight or laser pointer.
A new mechanism steers diodes made of a single enantiomer to emit light of right- and left-handed polarizations ...
Regular Christmas trees don’t emit light, nor do they react to music. If you want both things in a holiday decoration, consider this build from [dbmaking]. An ESP32-D1 mini runs the show ...
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