Written By: Shreya Gairola

Over the past few years, technology has totally changed our way exist. The technology is evolving and will keep evolving. The launch of smart technology has turned everyone’s life convenient. Smart home automation is trending across the globe. Known for its ability to efficiently perform household chores, this smart home automation transforms the world into a smarter one. The smart home is a sort of technology that links entire devices in one place and works on the internet. Every industry and homeowner is demanding about smart gadgets. As we move forward with the smart gadget, one gadget can control the temperature with the smart device known as the smart thermostats. Let’s understand more about Smart thermostats.

In 2020 the smart thermostat was projected to boost over 5.9 billion across several applications, including residential, commercial and industrial. Many established companies and start-ups streamline their design process and find an inexpensive, versatile and easy to use development solution to take a proof of concept into production as rapidly as possible. Let’s  understand more about the smart thermostats.

Smart Thermostats

Smart thermostats are around for a while, but if you have waited until now to purchase one, that is excellent news for everyone because they have gone better and will be progressing better. Every home and companies require heating and cooling machines. The recent models of smart thermostats genuinely live up to their name as they fulfil these needs efficiently. Whether you are in the home or in the office with just one tap, you can adjust the temperature at your home. In the office, the companies can also adjust the cooling and heating needs easily. The question arises now that is there any way or method to create these thermostats for your home. Well, building a thermostat can be easy and complex, too, sometimes. There are various brands of thermostats available in the market, and every thermostat is built differently.

Here we will discuss a few steps that can help you build your own Wi-Fi Connected Thermostat.

What you require to Build Your Own Smart Thermostat

The first and foremost step in building your own smart thermostat is the requirement of components for building up a smart thermostat. In the marketplace, several components are available through which you can build the smart thermostat on your own quickly. The primary thing you have to do is decide which component you want to use to build the smart thermostat. According to your budget, you can decide. Some components which you can use are:

  • Ardafuit Huzzah ESP8266
  • DHT22module
  • Relay
  • A power supply that can supply 5 volts at 2 amps (any phone charger will work fine)
  • Perfboard
  • Jumper wire male-female
  • Solder wire (use lead-free, it’s better for you)
  • With those, you can even go with various other ways for a case on the wall:
  • 2 Micro-servos
  • Metal case
  • 4 LEDs
  • NPN-transistor
  • Resistors
  • Few Piece of Plexiglas
  • A Piece of wood
  • Bits of minor stuff like screws and iron wire

To build the circuit, you only require a soldering iron. If you connected everything correctly, then the multimeter is very handy to use. You will need the Arduino software and a USB to serial converter or cable to upload software to the ESP8266 chip on the computer.

How Does a Thermostat Work?

A mostly house has central heating and cooling. A wire runs through a tube in the wall between the heater and the thermostat in the living room in the centralized heating and cooling procedure. A thermostat is more than a switch. It is the most basic need in today’s era. It turns the heater on and off. With dials and buttons on it, it sets the desired temperature that is needed. If the temperature in the space falls below the set temperature. This thermostat links the wires coming from the heater. From this, the heater knows to switch on. The circulation pump inside the heater will pump hot water through the radiators in the house. If the temperature is above the set temperature, the thermostat will detach the two wires. If you have various wires coming out of the wall, you can test which two you need simply by linking them.

Wiring the Temperature Sensor and Relay to the Chip

For wiring the temperature sensor, you need to cut three jumper wires in half to obtain a wire with a female connector on end and just a wire on the other one. Then, Strip the isolation from that side.

Push the female connectors on the temperature sensor pins and solder the loose ends to the perma-proto-board. If you have wires without connectors, you can also sell them straight to the pins or just solder the sensor straight onto the proto-board.


Some of the thermostats use a relay to switch the heater. A relay is a component that enables you to switch voltages much elevated than the Arduino, Raspberry Pi, or ESP8266 can handle.

 Software for the Thermostat

For every component, you can use the available standard libraries. You just require installing those libraries before the scripts get compiled and then sent to the chip. Various components have different libraries. In Arduino software, you can simply add them through the Sketch>Use library>Libraries.

Creating a Web App

If you want to control your central heating while you are away from home. Then you have to make the ESP8266 module available by opening a port on your router. Ensure that you do it safely, or your thermostat may be part of an Internet-of-Things botnet before you know it.


Innovative technology has made a positive impact on everyone’s life. These gadgets can not only control your entertainment but also can make your life more secure. With one tap on your smartphone, you can manage the heating and cooling at your home. Whether you are in a home or far away, these gadgets can manage your home quickly. This advance technology also allows creating your own device with the components available in the market. Smart thermostats can be quickly built at home.

You may also know:

What Does The Alexa Voice Remote Do?
The Best Smart Thermostats Currently Available For 2021
What Is IFTTT Home Automation