3.2. Using the Light and Color Sensor¶
In this short section, we get to see how one can read data off of the Light and Color Sensor without having to fine-tune the sensor or to deal with hard-to-understand concepts. Before anything else, connect the Light and Color Sensor to an I2C port on whichever platform (be it a GoPiGo3, GrovePi or a BrickPi3) and then run the following script.
The source file for this example program can be found here on github.
from time import sleep
from di_sensors.easy_light_color_sensor import EasyLightColorSensor
print("Example program for reading a Dexter Industries Light Color Sensor on an I2C port.")
my_lcs = EasyLightColorSensor(led_state = True)
while True:
# Read the R, G, B, C color values
red, green, blue, clear = my_lcs.safe_raw_colors()
# Print the values
print("Red: {:5.3f} Green: {:5.3f} Blue: {:5.3f} Clear: {:5.3f}".format(red, green, blue, clear))
sleep(0.02)
Here’s how the output of the script should look like:
Example program for reading a Dexter Industries Light Color Sensor on an I2C port.
Red: 0.004 Green: 0.004 Blue: 0.004 Clear: 0.013
Red: 0.005 Green: 0.004 Blue: 0.004 Clear: 0.013
Red: 0.005 Green: 0.005 Blue: 0.004 Clear: 0.014
Red: 0.005 Green: 0.005 Blue: 0.004 Clear: 0.015
Red: 0.005 Green: 0.005 Blue: 0.004 Clear: 0.014
Red: 0.005 Green: 0.005 Blue: 0.004 Clear: 0.014
Red: 0.006 Green: 0.005 Blue: 0.005 Clear: 0.015