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DIY chameleon lamp
In this project we see how to make a lamp that can change its colour according to the environment, using the Arduino Nano microcontroller. We must therefore create an electronic circuit that takes a color as input and outputs the relative light.
The most important material in this project is the TCS34725 RGB sensor (another version of the module based on the TCS3200). This sensor has RGB and Clear light sensing elements. It has an IR blocking filter, thanks to it you will get a much more faithful color than most sensors since humans do not see IR. The sensor also has incredible dynamic range with adjustable integration time and gain, so it is suitable for use behind darkened glass.
We will use an Arduino Nano board to take input from the sensor, an Adafruit Neopixel Ring to emit light of the same color, and a diffuser from an old LED bulb to diffuse the light.