This program uses three potentiometers for RGB control and displays the resulting color on an RGB LED. - fyemane/Arduino-Control-RGB-LED ...

Connect the positive lead of the LED light strip to Arduino’s 5V pin, and the negative lead to the GND pin. If you’re using an RGB LED strip, there may be additional leads for red, green, and blue.

Circuit Diagram: Connections: Connect the +ve end of the red led to pin 11 then connect the +ve end of the blue led to pin 10 then connect +ve end of the green led to pin 9. Take all the grounds ...

This is a great way to use an LED strip that would have otherwise gone to waste. If you can’t find a scanner with a color wand like this one, you can always start with an RGB strip.

Now, though, it shouldn’t be hard to control the RGB LED strips through an Arduino, a computer, or even an Android/iOS device with a small IR LED plugged into the headphone jack.

An optional RGB LED attempts to copy the shade of whatever object you’re aiming at, providing a handy reference to verify it’s working correctly. “ Watch this video on YouTube.

Guadagnini et al. (33) built a photometer consisting of a red LED (wavelength 620 nm), a BH1750 sensor, controlled by an Arduino NANO, showing applications for absorbance measurements in CuSO 4. dos ...