In this blog post I will show how you can build a Digital Lux Meter with Arduino designed to measure light intensity. It uses an LDR (Light Dependent Resistor) as the primary sensor, an LM358 Op-Amp for signal conditioning, and an Arduino Uno t…
As explained in the How common LED can be used as Light Sensors and Light Detection with General Purpose Transistors and LEDs for Microcontrollers , a general and readily available LED can be used as light sensor(photo diode). Here it is shown how …
Typically, an LED is used as a light emitter, but it can also function as a light detector (a photodiode). When light is shone on an LED, it generates a small amount of current due to the photovoltaic effect. This effect is similar to how photodiode…
In many industrial and scientific applications, it is essential to measure light intensity accurately and quickly. The TSL235R is a device that can help with this task, as it converts light intensity into an electrical frequency signal. In this blog…
