Hello!
I've been working on a small project just to get more into Arduino. Now I've got a problem which I don't know how to solve it anymore.
Background info: Im using a 16x2 LCD and a magnetic door sensor (same as this one: http://www.instructables.com/id/Magnetic-Door-Sensor-and-Arduino/ ). I want it to count each time de door opens.
Problem: Each time the door is open (magnetic doorsensor == HIGH) it keeps counting until the door closes again.
What I want: each time the door opens (HIGH) it counts with +1.
The Sketch:
#include <LiquidCrystal.h>
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2; //instellen lcd pins
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
int doorsensor =7;
int state; //0 close - 1 open - current state of the button
int buttonPushCounter = 0; // counter for the number of button presses
int lastButtonState = 0;
boolean currentState = LOW;
void setup() {
// put your setup code here, to run once:
pinMode(doorsensor, INPUT_PULLUP);
}
void loop() {
// bepalen hoe lang de deur openstaat
state = digitalRead(doorsensor);
// compare the buttonState to its previous state
if (state != lastButtonState) {
// if the state has changed, increment the counter
if (state == HIGH) {
// if the current state is HIGH then the button went from off to on:
buttonPushCounter++;
lcd.setCursor(10,0);
}
}
lcd.setCursor(10, 1);
lcd.print(buttonPushCounter);
Can someone help me out?
Thanks in advance!
