MQ135 gas sensor

By Teerath Agrawal

Ensuring the safety of loved ones—especially children and the elderly—is a constant concern for families. While caregivers want to stay connected and responsive at all times, it is practically impossible to monitor someone continuously. Existing solutions often address only one scenario: either home monitoring or personal safety on the go, forcing…

Breathing clean, healthy air is vital for our well-being, yet air quality remains a concern in many environments. In this article, we delve into creating an Arduino-based Air Quality Monitoring System. Previously, we have also built an IoT-based Air pollution monitoring system using ESP8266, but for this project, we will keep things simple and use the popular Arduino UNO board to build a…

Gardening is a very relaxing hobby. However, due to our busy lifestyles, the plants in our garden may not always get the attention they deserve. What if we could monitor their condition from a distance and give them the care they needed? There is a Way! I aim to address this problem by integrating IoT with gardening. This way our garden becomes smart and…

The earth’s Atmospheric CO2 level is increasing day by day. The global average atmospheric carbon dioxide in 2019 was 409.8 parts per million and in October-2020 it is 411.29. Carbon dioxide is a key greenhouse gas and responsible for about three-quarters of emissions. So CO2 level monitoring has also started to gain importance.

In our previous…

In this project, we are going to make an IoT Based Air Pollution Monitoring System in which we will monitor the Air Quality over a webserver using internet and will trigger a alarm when the air quality goes down beyond a certain level, meaning when there are sufficient amount of harmful gases are present in the air like CO2, smoke, alcohol, benzene and NH3. It will display…