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Arduino Due and TCS34725 Color Sensor

by shedboy71

The TCS34725 device provides a digital return of red, green, blue (RGB), and clear light sensing values. An IR blocking filter, integrated on-chip and localized to the color sensing photodiodes, minimizes the IR spectral component of the incoming light and allows color measurements to be made accurately. The high sensitivity, wide dynamic range, and IR blocking filter make the TCS3472 an ideal color sensor solution for use under varying lighting conditions and through attenuating materials. This data is transferred via an I2C to the host.

tcs47325

tcs47325

Connection and Layout

This example is for an Arduino Due board connected to the module

Arduino Due and TCS34725

Arduino Due and TCS34725

 

Code

We will use the adafruit library – https://github.com/adafruit/Adafruit_TCS34725

This is one of the default examples

[codesyntax lang=”cpp”]

#include <Wire.h>
#include "Adafruit_TCS34725.h"


/* Initialise with default values (int time = 2.4ms, gain = 1x) */
// Adafruit_TCS34725 tcs = Adafruit_TCS34725();

/* Initialise with specific int time and gain values */
Adafruit_TCS34725 tcs = Adafruit_TCS34725(TCS34725_INTEGRATIONTIME_700MS, TCS34725_GAIN_1X);

void setup(void) {
Serial.begin(9600);

if (tcs.begin()) {
Serial.println("Found sensor");
} else {
Serial.println("No TCS34725 found ... check your connections");
while (1);
}

// Now we're ready to get readings!
}

void loop(void) {
uint16_t r, g, b, c, colorTemp, lux;

tcs.getRawData(&r, &g, &b, &c);
colorTemp = tcs.calculateColorTemperature(r, g, b);
lux = tcs.calculateLux(r, g, b);

Serial.print("Color Temp: "); 
Serial.print(colorTemp, DEC); 
Serial.print(" K - ");
Serial.print("Lux: ");
Serial.print(lux, DEC); 
Serial.print(" - ");
Serial.print("R: "); 
Serial.print(r, DEC); 
Serial.print(" ");
Serial.print("G: "); 
Serial.print(g, DEC); 
Serial.print(" ");
Serial.print("B: "); 
Serial.print(b, DEC); 
Serial.print(" ");
Serial.print("C: ");
Serial.print(c, DEC); 
Serial.print(" ");
Serial.println(" ");
}

[/codesyntax]

 

Output

Open the serial monitor, this is what you should see

Color Temp: 4554 K – Lux: 379 – R: 1122 G: 831 B: 776 C: 1429
Color Temp: 3173 K – Lux: 181 – R: 475 G: 339 B: 272 C: 707
Color Temp: 3425 K – Lux: 224 – R: 604 G: 435 B: 364 C: 868
Color Temp: 2833 K – Lux: 1497 – R: 2983 G: 2240 B: 1461 C: 5723
Color Temp: 5847 K – Lux: 109 – R: 4109 G: 1327 B: 890 C: 5814
Color Temp: 2767 K – Lux: 460 – R: 4468 G: 1703 B: 1062 C: 6734
Color Temp: 4381 K – Lux: 463 – R: 1379 G: 1012 B: 938 C: 1789
Color Temp: 4276 K – Lux: 588 – R: 1464 G: 1136 B: 997 C: 2153
Color Temp: 3952 K – Lux: 646 – R: 1424 G: 1135 B: 933 C: 2350
Color Temp: 3528 K – Lux: 835 – R: 1713 G: 1362 B: 1036 C: 3101

 

Links

TCS34725 RGB Light Color Sensor Recognition Module

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