LCD Thermometer using TMP36 Sensor

A LCD thermometer that gets its information from a TMP36 Sensor. Can read in Fahrenheit and Celsius.

Oct 17, 2019

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Devices & Components

Arduino Uno Rev3

Resistor 220 ohm

Alphanumeric LCD, 16 x 2

Rotary potentiometer (generic)

Jumper wires (generic)

Software & Tools

Arduino IDE

Project description

Code

arduino

Paste in arduino IDE.

1#include <LiquidCrystal.h>
2
3LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
4
5int  sensorPin = 0; 
6 
7
8void setup()
9{
10  lcd.begin(16, 2);                         
11}
12  
13void loop()                     
14{
15 
16lcd.clear();
17int reading =  analogRead(sensorPin);  
18float voltage = reading * 5.0;
19voltage /= 1024.0;  
20float temperatureC = (voltage - 0.5) * 100 ; 
21float temperatureF = (temperatureC  * 9.0 / 5.0) + 32.0;
22lcd.print(temperatureF); 
23lcd.println(" degrees F ");
24lcd.setCursor(0,1);
25lcd.print(temperatureC);
26lcd.println("  degrees C ");
27delay(1000);
28
29}
30

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

int  sensorPin = 0; 
 

void setup()
{
  lcd.begin(16, 2);                         
}
  
void loop()                     
{
 
lcd.clear();
int reading =  analogRead(sensorPin);  
float voltage = reading * 5.0;
voltage /= 1024.0;  
float temperatureC = (voltage - 0.5) * 100 ; 
float temperatureF = (temperatureC  * 9.0 / 5.0) + 32.0;
lcd.print(temperatureF); 
lcd.println(" degrees F ");
lcd.setCursor(0,1);
lcd.print(temperatureC);
lcd.println("  degrees C ");
delay(1000);

}

Downloadable files

Schematic

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