Grove Examples > LightSensor

Example 06: Sensing the Light (Light Sensor)

Example Video

Code

/*
  Light Sensor
 A simple program that display the value of light incident on the grove-light-sensor
 by grove-4-digital-display, this example is definitely similar to grove-rotary-angle-sensor 
* Note:   

This example code is in the public domain.
 http://www.seeedstudio.com/depot/Grove-Light-Sensor-p-746.html?cPath=25_27 
 */
#include "TM1637.h" 

/* Macro Define */
#define CLK               9                  /* 4-digital display clock pin */
#define DIO               10                 /* 4-digiral display data pin */
#define BLINK_LED         RED_LED            /* blink led */
#define LIGHT_SENSOR      A1                 /* pin of grove light sensor */

/* Global Varibles */
TM1637 tm1637(CLK, DIO);                  /* 4-digital display object */
int analog_value = 0;                     /* varible to store the value coming from rotary angle sensor */
int blink_interval = 0;                   /* led delay time */
int8_t bits[4] = {0};                     /* array to store the single bits of the value */

/* the setup() method runs once, when the sketch starts */
void setup() {
    /* Initialize 4-digital display */
    tm1637.init();
    tm1637.set(BRIGHT_TYPICAL);
  
    /* declare the red_led pin as an OUTPUT */
    pinMode(RED_LED, OUTPUT);
  
}

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