RGB Color Sensor on Arduino

The next board I want to show you is the ADJD-S371 Color Light Sensor Evaluation Board from sparkfun. It emits light and analyses the reflected color spectrum. The board can be controlled via I2C. The sleep and xclk pins were not used in this example. I found a really nice tutorial describing how to connect the sensor to the Arduino. The example also provided the code to communicate with the sensor. I only had to change minor parts to fit my needs.

RGB Color Sensor on Arduino

My basic setup looks a little bit different because I used a full color rgb LED with six pins. Two for ground, one for red, one for green and two for blue. I also used another schematic this time. What you see here is a software developed by the University of Applied Sciences Potsdam, here in Germany. The software is called Fritzing. You can design your circuit on a protoboard, convert it into a circuit diagram and even into a PCB layout for later manufacturing. It’s really nice and easy to use. Thanks for the tip Darsh!

As already mentioned I only changed the code from the tutorial a little bit to fit to my rgb LED.

RGB Color Sensor on Arduino

//Configure gain here
//Higher numbers = less sencitive
// 0x00 through 0x0f
int redGain = 0x03;
int greenGain = 0x0;
int blueGain = 0x0f;
int clearGain = 0x01;

//Include the I2C Arduino library

//7 bit I2C address of this sensor
#define I2C_ADDRESS 0x74

#define REG_CAP_RED    0x06
#define REG_CAP_GREEN     0x07
#define REG_CAP_BLUE     0x08
#define REG_CAP_CLEAR     0x09

#define REG_INT_RED_LO    0x0A
#define REG_INT_RED_HI    0x0B
#define REG_INT_GREEN_LO 0x0C
#define REG_INT_GREEN_HI 0x0D
#define REG_INT_BLUE_LO    0x0E
#define REG_INT_BLUE_HI    0x0F
#define REG_INT_CLEAR_LO 0x10
#define REG_INT_CLEAR_HI 0x11

For more detail: RGB Color Sensor on Arduino

About The Author

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.

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