Published October 17, 2019 © GPL3+

LCD Thermometer using TMP36 Sensor

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

IntermediateFull instructions provided10,780

Things used in this project

Hardware components

Arduino UNO

Rotary potentiometer (generic)

Resistor 220 ohm

Jumper wires (generic)

Alphanumeric LCD, 16 x 2

Software apps and online services

Arduino IDE

Story

When I was going through the Arduino Starter Kit projects, I noticed that I could combine projects 3:Love-O-Meter and project 11:Crystal Ball together and create a display that could read temperature sensor inputs. Few things to make note of:

Make sure potentiometer is connected!

There are a lot of wires, so make sure to follow the schematic exactly as written.

The tmp36 sensor Vout should be linked to A0 (analog pins).

Code

Code

#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);

}

Credits

VJZ

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LCD Thermometer using TMP36 Sensor

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Schematic

Code

Code

Credits

VJZ

Comments

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LCD Thermometer using TMP36 Sensor

LCD Thermometer using TMP36 Sensor

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Schematic

Code

Code

Credits

VJZ

Comments

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