This digital output can be input to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human eye response. Commonly available ...

We know that measuring the speed of light with an Arduino is possible. It’s just that the implementation is hard. Last month we saw [Udo]’s blinkenlight shield that can be used as a lin… ...

The LDR (Light Dependent Resistor) sensor changes resistance based on the light intensity. In this project, the LDR is connected to an Arduino Uno to automatically control lighting. When light ...