Electronic Sensors

In this article we are going to construct an GSM based LPG leakage SMS alert circuit using Arduino, which alerts the recipient via SMS and surrounding people via beep, when LPG gas leaks out from the LPG cylinder or if there’s leakage due to improperly closed valve. By: Girish Radhakrishanan Using MQ-135 as the Sensor … Read moreLPG Leakage SMS Alert using MQ-135 – Get Warning Message in your Cellphone

In this article we are going to learn how to interface air quality sensor MQ-135 with Arduino. We will see overview of the sensor and construct a project which detects LPG gas leakage and see some relevant readings in serial monitor. By: Arduino Guru What is MQ-135 sensor? MQ-135 is an air quality or air … Read moreMQ-135 Air Quality Sensor Circuit – Working and Interfacing with Program Code

The post discusses a simple deep under soil metal detector circuit for evaluating hidden metals such as gold, iron, tin, brass etc by detecting change in the resistance of the relevant soil layers. Bigger physical objects which might be buried within the topsoil could be unveiled through a modification in the electrical resistance of the … Read moreDeep Soil Metal Detector Circuit – Ground Scanner

In this article, we are going to construct a LED room thermometer circuit using Arduino, which displays the readings in doted/bar LEDs. This project can be implemented for applications where ambient temperature plays a crucial role or it could be built just as another fun project for your home. Using DTH11 as the Temperature Sensor … Read moreHow to Make a LED Room Thermometer Circuit