Internet of Things

Regulating Temperature using Ardunio

In this urban life living it has become a necessity for automating everything. It is also useful when we forget something to turn off and it turns off automatically instead of people going back and turning it off.

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This not only saves time but money too by reducing energy consumption. It is also very comfortable as they will be running automatically without the interaction of humans.

The regulation of temperature is also important. For example, In Large companies where people work for 24 hours and some manufacturing goes on and they need some exact temperature to make the product effective. Even cold storages are to be maintained in constant temperature to store and stop the food from being decomposed.

This project is the prototype in which it regulates the temperature of the room. We are using MCP9700A an analog temperature sensor, 1-ohm cement resistor, DC fan, two-channel relay, and external power supply. The temperature is taken from the MCP9700A sensor and depending on the temperature the Arduino decides whether to power the cement resistors or the DC fan which works as the exhaust by pulling out the whole heat from the room. 

Project description:

Arduino Uno: This is a board consists of a Microcontroller. It has all input and output pins by which we can connect the sensor and get the output from output digital pins. We can load the required program into the board using USB.

1-ohm resistor: This resistor is used to produce the heat. When the temperature of the room is less than the given threshold value it heats up.

MCP9700A sensor: This is an analog temperature sensor used to get the temperature of the specified area

DC Fan: This fan is used to exhaust the heat from the room.

Two-channel relays: This relay is used to control the power flow in two channels by the intervention of Arduino.

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Project Implementation:

  1. The temperature sensors are placed in the room to get the input from them.
  2. These are connected to the Arduino UNO using jumper wires
  3. The DC fan is also directly connected to the relay
  4. The 1-ohm cement resistors are also connected to the relay.
  5. When the temperature is less than the threshold value the electricity passes through the relay to resistor then it heats the resistors, so, heat is produced and brings the temperature to normal (given) level.
  6. If the temperature is high then the DC fan gets turned on as the electricity is passed from the relay to DC fan and the heat is exhausted from the room.
  7. If the temperature is normal then no power supply is given to the relay.

Software Requirements:

  • You will be needing Arduino IDE software to write and upload the program to the Arduino Uno board.


  • Cost will be less as no manpower is required.
  • Electricity can be used efficiently.

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Programming language: C, C++ (for programming Arduino)

Kit required to develop Regulating Temperature using Ardunio:
Technologies you will learn by working on Regulating Temperature using Ardunio:
Regulating Temperature using Ardunio
Skyfi Labs Last Updated: 2020-10-10

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