43 lines
808 B
C++
43 lines
808 B
C++
#include <LiquidCrystal.h>
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LiquidCrystal lcd(7, 6, 5, 4, 3, 2);
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int samples[30];
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float tempC;
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float tempClast = 0;
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float tempF;
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int tempPin = 0;
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void setup() {
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pinMode(13, OUTPUT);
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lcd.begin(16, 2);
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lcd.print("Temperature:");
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}
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void loop() {
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int i;
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tempC = 0;
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for(i = 0; i <= 29; i++) {
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samples[i] = (5.0 * analogRead(tempPin) * 100.0) / 1024.0;
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tempC = tempC + samples[i];
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digitalWrite(13, HIGH);
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delay(1000);
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digitalWrite(13, LOW);
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delay(1000);
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}
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tempC = tempC / 30.0;
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tempF = (tempC*9) / 5 + 32;
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lcd.setCursor(0, 1);
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lcd.print(tempC);
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lcd.print("C/");
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lcd.print(tempF);
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lcd.print("F ");
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if(tempClast > tempC) {
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lcd.print("-");
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} else if(tempClast < tempC) {
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lcd.print("+");
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} else {
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lcd.print("*");
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}
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tempClast = tempC;
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}
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