You’re asking what is LDR? It stands for Light Dependent Resistor or Photoresistor, which is a passive electronic component, basically a resistor which has a resistance that varies depending of the ...

The LDR must be soldered in a way that it can comfortably see ambient light through the Fresnel lens. To be frank, using a microcontroller is probably overkill for most motion detector safety light ...

Most ambient lights and sensors are designed to generate light to even out the picture on the front of the panel and reduce any light bleed from the back of an LCD display. This Arduino-powered ...