Using led as light sensor arduino - Adafruit TSL2561 Digital Luminosity/Lux/Light Sensor
You want this article here: Arduino and the Taos TSL230R Light Sensor: Getting Started. If you want to be able to check for changes in light.
Using a Photocell. by lady ada to the analog input of a microcontroller such as an Arduino analog voltage based on the sensor lightresistance wa 5V supply.
LED Illumination ISL RGB Light Sensor Hookup Guide SCL to A5 on the Uno. If youre using the Uno or any 5V Arduino.
LED Illumination A guide to help you integrate the ISL RGB light sensor breakout board into your electronic If you are using a 5v arduino board.
Video embeddedThis tutorial is designed to show the beginner arduino user: How to use a photocell with a Arduino Uno.
In this project, we will go over how to build a night light using an arduino board. This is a circuit which will turn an LED on as soon as it gets dark.