X-Git-Url: https://git.toastfreeware.priv.at/toast/airingbutler.git/blobdiff_plain/cb212fc9912c1bdb92400c304e72b44aad3b7728..b4d3ce956ec69c81f240e37aa4f381533c4b6c73:/airingbutler.ino

diff --git a/airingbutler.ino b/airingbutler.ino
index 5e33a80..c05a737 100644
--- a/airingbutler.ino
+++ b/airingbutler.ino
@@ -1,4 +1,5 @@
 #include <SoftwareSerial.h>
+#include <LiquidCrystal.h>
 #include "MHZ19.h"
 
 const int rx_pin = 2; // connect to TX on MHZ19
@@ -8,11 +9,25 @@ const int led_green_pin  = 4;
 const int led_yellow_pin = 5;
 const int led_red_pin    = 6;
 
+const int buzzer_pin = 13;
+
+/*
+const int lcd_pin = 7;
+const int lcd_pin = 8;
+const int lcd_pin = 9;
+const int lcd_pin = 10;
+const int lcd_pin = 11;
+const int lcd_pin = 12;
+*/
+
 const int co2_warning_thr = 1000;
 const int co2_alarm_thr   = 1500;
 
 MHZ19 mhz19 = MHZ19(rx_pin,tx_pin);
+LiquidCrystal lcd(7,8,9,10,11,12);
+
 unsigned long time;
+int lastppm = 0;
 
 
 void setup()
@@ -21,10 +36,18 @@ void setup()
     Serial.println("Time,CO2,Temp");
     mhz19.begin(rx_pin, tx_pin);
 
-	// led
+	// LCD
+	lcd.begin(16,2);
+	lcd.setCursor(0,0);
+	lcd.print("Airing Butler");
+	lcd.setCursor(0,1);
+	lcd.print("says hello!");
+
+	// led+buzzer
 	pinMode(led_green_pin, OUTPUT);
 	pinMode(led_yellow_pin, OUTPUT);
 	pinMode(led_red_pin, OUTPUT);
+	pinMode(buzzer_pin, OUTPUT);
 	digitalWrite(led_green_pin, HIGH);
 	delay(500);
 	digitalWrite(led_green_pin, LOW);
@@ -34,6 +57,11 @@ void setup()
 	digitalWrite(led_red_pin, HIGH);
 	delay(500);
 	digitalWrite(led_red_pin, LOW);
+	digitalWrite(buzzer_pin, HIGH);
+	delay(200);
+	digitalWrite(buzzer_pin, LOW);
+	
+	lcd.clear();
 }
 
 
@@ -52,6 +80,31 @@ void loop()
 	digitalWrite(led_yellow_pin, m.co2_ppm >= co2_warning_thr && m.co2_ppm < co2_alarm_thr);
 	digitalWrite(led_green_pin, m.co2_ppm < co2_warning_thr);
 
+	if (m.co2_ppm >= co2_alarm_thr && lastppm < co2_alarm_thr) {
+		digitalWrite(buzzer_pin, HIGH);
+		delay(100);
+		digitalWrite(buzzer_pin, LOW);
+		delay(100);
+		digitalWrite(buzzer_pin, HIGH);
+		delay(100);
+		digitalWrite(buzzer_pin, LOW);
+		delay(100);
+		digitalWrite(buzzer_pin, HIGH);
+		delay(100);
+		digitalWrite(buzzer_pin, LOW);
+	}
+
+	if (m.co2_ppm >= co2_warning_thr && lastppm < co2_warning_thr) {
+		digitalWrite(buzzer_pin, HIGH);
+		delay(500);
+		digitalWrite(buzzer_pin, LOW);
+	}
+
+	lcd.setCursor(0,0);
+	lcd.print("CO2: ");
+	lcd.print(m.co2_ppm);
+	lcd.print(" ppm         ");
+
+    lastppm = m.co2_ppm;
     delay(5000);
 }
-