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This circuit shows how to use an ordinary LED as a light sensor. It makes use of the photovoltaic voltage developed across the LED when it is exposed to light. LEDs are cheaper than photodiodes and ...

Here is one simple circuit of a general-purpose white LED security light with Passive Infrared (PIR) Motion sensing mechanism. At the heart of the circuit is a PIR sensor module SB0061. SB0061 is a ...

Ikea has launched a new affordable LED light with a built-in motion sensor in Europe, and it appears to be primarily used as a night light. It joins Ikea’s wider range of budget-friendly lighting ...

I went on Amazon and bought a pack of LED motion sensor lights on a whim and they were the exact thing my kitchen needed.

There’s a certain moment every parent knows. It’s gone 10pm, you’re taking the bins out or grabbing something from the car, ...

Before the modern notion of the citizen scientist lies the earlier ideal of the independent scientist. Scientists outside of the academic community but engaging with it. These days citizen scientists ...