As noted in the introduction, another way to experiment the new Bosch sensor is to get a PurpleAir PIXEL USB dongle for $119 that changes its RGB LED color depending on the AQI value. It’s a ...

That's where other factors come in. The LED, or light-emitting diode, is very unlikely to fail, and if it does, it goes out slowly over years. Instead, it's the other electrical bits in LED bulbs ...

To get our eyes warmed up and popping, [James Best] has concocted a gargantuan 900-RGB-LED music visualizer to ... opting for a Teensy over the go-to Arduino, [James] is using the spare CPU ...

[fl-consult] published this interesting RGB laser diode projector. The build uses three lasers, 532nm green, 660nm red and a 405nm blue diode from an XBox 360 HD-DVD drive. Aside from the salvaged ...