Arduino Thermometer Using LM35 Temperature Sensor

In this project, we will be displaying temperature in degree Centigrade and Fahrenheit as well. The ambient temperature is sensed using LM35 Temperature Sensor which is a linear sensor. LM35 Temperature Sensor gives linear output of 10mV/°C, this output of the sensor is then given to Analog input of Arduino UNO. Which then measures the temperature and displays it on 16x2 Alphanumeric Display in real time. 

Step 1: What You Need?

1 x Arduino UNO R3 

1 x LM35 Temperature Sensor 

1 x 16x2 LCD

1 x Breadboard

1 x USB Arduino Cable 
Wires

1 x Computer with Arduino software installed

Don't have components? Don't worry. Just click the component's name. 

Step 2: Built Your Circuit. 

LM35 Temperature Sensor is an integrated analog temperature sensor whose electrical output is proportional to Degree Centigrade. Arduino measures output of the sensor and then displays the reading on LCD. As the LM35 Temperature sensor gives output in Degree Centigrade, the Arduino then calculates the temperature in Fahrenheit as well and displays both reading on the LCD.

This calculation is quite simple:

°F =°C x 9/5 + 32

So 30 °C to °F will be 30°C x 9 / 5 +32 = 86.0 °F

Step 3: Upload Code To Board.

Download: 

Arduino software
LM35 Datasheet

Sources:[http://www.instructables.com/id/Arduino-Thermometer-Using-LM35-Temperature-Sensor/]

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Author & Editor

My Robot Education Sdn. Bhd. (Robotedu.my) was founded in 2015 as the first robotics education centre in Malaysia to provide Arduino-based robotics courses for youths. Our vision is to be able to provide robotics education to every youth in Malaysia.