FablabSU

Documentation

Disponibilité : Espaces Prototypage et Greenlab

Le capteur de qualité de l'air Grove est un capteur qui indique de manière générale la présence ou non de gaz nocifs (monoxyde de carbone, solvant…).

Il fonctionne en 3V3 et en 5V.

Il nécessite un port analogique.

/*
AirQuality Demo V1.0.
connect to A1 to start testing. it will needs about 20s to start
  * By: http://www.seeedstudio.com
  */
#include "AirQuality.h"
#include "Arduino.h"
AirQuality airqualitysensor;
int current_quality =-1;
void setup()
{
    Serial.begin(9600);
    airqualitysensor.init(14);
}
void loop()
{
    current_quality=airqualitysensor.slope();
    if (current_quality >= 0)// if a valid data returned.
    {
        if (current_quality==0)
        Serial.println("High pollution! Force signal active");
        else if (current_quality==1)
        Serial.println("High pollution!");
        else if (current_quality==2)
        Serial.println("Low pollution!");
        else if (current_quality ==3)
        Serial.println("Fresh air");
    }
}
ISR(TIMER2_OVF_vect)
{
    if(airqualitysensor.counter==122)//set 2 seconds as a detected duty
    {
 
        airqualitysensor.last_vol=airqualitysensor.first_vol;
        airqualitysensor.first_vol=analogRead(A0); // change this value if you use another A port
        airqualitysensor.counter=0;
        airqualitysensor.timer_index=1;
        PORTB=PORTB^0x20;
    }
    else
    {
        airqualitysensor.counter++;
    }
}