sensori

introduction

If the ambient light is low turn on one red light ... if it is higher two leds... if it's strong three leds. Let's try this:

from 0 to 80 -> 1 led
from 80 to 160 -> 2 leds
from 160 to 250 -> 3 leds

program

apri il programma

Arduino

inizia il laboratorio

algorithm

attrezzaggio

pin1

_led1

pin2

_led2

pin3˜

_led3

pinA0

_sensorlight

variabili

A = 0

ciclo

the variable A is equal to... read the sensor: _sensorlight

IF HAPPENS THAT A is less than 80

SWITCH ON (5 Volt) switch on

_led1

SWITCH OFF (0 Volt) switch off

_led2

SWITCH OFF (0 Volt) switch off

_led3

IF HAPPENS THAT A is greater than 80 and even IF A is less than 0

SWITCH ON (5 Volt) switch on

_led1

SWITCH ON (5 Volt) switch on

_led2

SWITCH OFF (0 Volt) switch off

_led3

IF HAPPENS THAT A is greater than 160

SWITCH ON (5 Volt) switch on

_led1

SWITCH ON (5 Volt) switch on

_led2

SWITCH ON (5 Volt) switch on

_led3

wait 500 milliseconds

Arduino code

//programma: sensori

//******* pin ********

//******* declare ******** 
const int pin_led1=1;//pin of _led1
const int pin_led2=2;//pin of _led2
const int pin_led3=3;//pin of _led3
const int pin_sensorlight=A0;//pin sensorluce
int A=0;//declares the variable

//********** setup **********  
   void setup(){ 
	
	pinMode(pin_led1,OUTPUT);  
	pinMode(pin_led2,OUTPUT);  
	pinMode(pin_led3,OUTPUT);  
	pinMode(pin_sensorlight,INPUT); 
}

//********** loop ********** 
 void loop() { 
	
	A=analogRead(pin_sensorlight); // reads the sensor _sensorlight
	if(A<80){ 
	digitalWrite(pin_led1,HIGH); // HIGH/LOW is the voltage 5V/0V)
	digitalWrite(pin_led2,LOW); // HIGH/LOW is the voltage 5V/0V)
	digitalWrite(pin_led3,LOW); // HIGH/LOW is the voltage 5V/0V)
		} 
	if(A>80 && A<0){ 
	digitalWrite(pin_led1,HIGH); // HIGH/LOW is the voltage 5V/0V)
	digitalWrite(pin_led2,HIGH); // HIGH/LOW is the voltage 5V/0V)
	digitalWrite(pin_led3,LOW); // HIGH/LOW is the voltage 5V/0V)
		} 
	if(A>160){ 
	digitalWrite(pin_led1,HIGH); // HIGH/LOW is the voltage 5V/0V)
	digitalWrite(pin_led2,HIGH); // HIGH/LOW is the voltage 5V/0V)
	digitalWrite(pin_led3,HIGH); // HIGH/LOW is the voltage 5V/0V)
		} 
	delay(500);//attendi

};//end loop

//powered by "Arduinomio" (C) 
//www.mastrohora.it

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