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Example code: CAPA

001 // Integrating LCD-Library

002 #include <LiquidCrystal.h>

003

004 // Specifying LCD pins

005 // RS, E, D4, D5, D6, D7

006 LiquidCrystal lcd(11, 10, 2, 3, 4, 5);

007

008 #define Backlight 9

009

010 int messPort=12;

011 float c_time=0.0;

012 float kapazitaet=0.0;

013

014 void setup()

015 {

016 analogWrite(Backlight,200);

017

018 lcd.begin(16, 2);

019 lcd.setCursor(0,0);

020 lcd.print("C-METER");

021 }

022

023 void loop()

024 {

025 // Discharging

026 pinMode(messPort,OUTPUT);

027 digitalWrite(messPort,LOW);

028 c_time=0.0;

029 delay(1000);

030

031 // Charging

032 pinMode(messPort,INPUT);

033 digitalWrite(messPort,HIGH);

034

035 // Measuring

036 do

037 {

038 c_time++;

039 }while(!digitalRead(messPort));

040

041 // Converting

042 kapazitaet=(c_time*0.06162)*10.0;

043

044 // Range

045 if(kapazitaet<999)