RTD sensor interface with arduino nano

RTD sensor interface with arduino nano

In this article we will learn how to interface arduino with RTD sensor.
In the last post we will learn how to interface arduino with Turbidity sensor. You can visit our website,
I hope you appreciate my work, let’s discuss about today’s project.

What is RTD sensor?

An RTD stands for “Resistance Temperature Detector” and it is a sensor whose resistance changes when its temperature changes and it is used to measure temperature. The RTD’s resistance increases linearly when the temperature increases.

Components which we use in this project are below:

  1. Arduino nano
  2. RTD sensor (pt 100)
  3. Push button
  4. 9V battery
  5. LCD display
  6. Connecting wires

Diagram of this project:

RTD sensor interface with arduino nano
RTD sensor interface with arduino nano

Construction of RTD sensor interface with arduino nano:

  • Connect +ve point of the RTD sensor with 5V point of arduino nano
  • Connect GND point of RTD sensor with GND point of arduino nano
  • Connect signal point of RTD sensor with A4 point of arduino nano
  • Connect the D2 point of arduino with the DB7 point of LCD
  • Connect the D3 point of arduino with the DB6 point of LCD
  • Connect the D4 point of arduino with the DB5 point of LCD
  • Connect the D5 point of arduino with the DB4 point of LCD
  • Connect the D6 point of arduino with the E point of LCD
  • Connect the D7 point of arduino with the VDD point of LCD
  • Connect the (K-, DB3, RW, VSS) points with each other through the GND point of arduino
  • Connect VO point of LCD with 5V point of arduino nano
  • Connect the 1 terminal of push button to the Vin point of arduino nano
  • Connect the other terminal of push button with the +ve terminal of 5V battery
  • Connect the –ve terminal of 5V battery with the GND point of arduino nano

Working of RTD sensor interface with arduino nano:

A Resistance Temperature Detector (RTD) is a type of temperature sensor that measures temperature by correlating the resistance of the RTD element with temperature. RTDs are known for their high accuracy and stability, making them a popular choice for temperature measurement applications. To interface an RTD sensor with an Arduino Nano, you’ll typically use a signal conditioning circuit or an RTD module, and you’ll need to write some Arduino code to read and process the sensor data.

Applications of RTD sensor interface with arduino nano:

  1. Greenhouse Climate Control
  2. Food and Beverage Industry
  3. Laboratory Instruments
  4. Temperature Data Logging

Advantages of RTD sensor interface with arduino nano:

  1. High Accuracy
  2. Wide Temperature Range
  3. Low Drift
  4. Linear Response