Datasheet

values, as shown in the code below:

calculateLux can be used to take both the infrared and visible spectrum sensor data and roughly correlate with the

equivalent SI lux value, based on a formula from the silicon vendor that takes into account the sensor properties and

the integration time and gain settings of the device.

To calculate the lux, simple call calculateLux(full, ir), where 'full' and 'ir' are raw 16-bit values taken from one of the two

raw data functions above. See the code sample above for an example of calculating lux.

/**************************************************************************/

Show how to read IR and Full Spectrum at once and convert to lux

/**************************************************************************/

void advancedRead(void)

{

// More advanced data read example. Read 32 bits with top 16 bits IR, bottom 16 bits full spectrum

// That way you can do whatever math and comparisons you want!

uint32_t lum = tsl.getFullLuminosity();

uint16_t ir, full;

ir = lum >> 16;

full = lum & 0xFFFF;

Serial.print("[ "); Serial.print(millis()); Serial.print(" ms ] ");

Serial.print("IR: "); Serial.print(ir); Serial.print(" ");

Serial.print("Full: "); Serial.print(full); Serial.print(" ");

Serial.print("Visible: "); Serial.print(full - ir); Serial.print(" ");

Serial.print("Lux: "); Serial.println(tsl.calculateLux(full, ir));

}