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36 lines
1.0 KiB
36 lines
1.0 KiB
//www.elegoo.com
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//2016.12.9
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#include <LiquidCrystal.h>
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int tempPin = 0;
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// BS E D4 D5 D6 D7
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LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
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void setup()
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{
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lcd.begin(16, 2);
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}
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void loop()
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{
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int tempReading = analogRead(tempPin);
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// This is OK
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double tempK = log(10000.0 * ((1024.0 / tempReading - 1)));
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tempK = 1 / (0.001129148 + (0.000234125 + (0.0000000876741 * tempK * tempK )) * tempK ); // Temp Kelvin
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float tempC = tempK - 273.15; // Convert Kelvin to Celcius
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float tempF = (tempC * 9.0)/ 5.0 + 32.0; // Convert Celcius to Fahrenheit
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/* replaced
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float tempVolts = tempReading * 5.0 / 1024.0;
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float tempC = (tempVolts - 0.5) * 10.0;
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float tempF = tempC * 9.0 / 5.0 + 32.0;
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*/
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// Display Temperature in C
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lcd.setCursor(0, 0);
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lcd.print("Temp C ");
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// Display Temperature in F
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//lcd.print("Temp F ");
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lcd.setCursor(6, 0);
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// Display Temperature in C
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lcd.print(tempC);
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// Display Temperature in F
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//lcd.print(tempF);
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delay(500);
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}
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