The ESP32 Air Quality Monitor is an IoT-based project that measures and monitors air quality in real time. It uses an ESP32 with environmental sensors to collect and display important air-quality data ...

We’ve always taken a certain childlike joy in seeing tiny things made big, and big things tiny. Evidently [Uncle Stem] is the ...

Avian Visitors is a lovely project by [Teddy Warner] that uses a Raspberry Pi and microphone to keep track of which birds ...

Smartphones may give us an easy access to a light source, but for seeing objects at a distance or brightening a workspace in places like the attic or under the sink, you need the power and range of a ...

Organic LEDs are light emitting diodes (LEDs) that use polymers or small organic molecules as their optically active element. Development of organic LEDs is driven in particular by its potential as a ...

We independently review everything we recommend. We may make money from the links on our site. Learn more› By Rachel Cericola Rachel Cericola is a writer covering smart home. In addition to testing ...

Lasers, LEDs and light sources are devices that create light. LEDs (light emitting diodes) convert an electrical current into light using spontaneous emission in optically active semiconductors.