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Sensors and Detectors

Material Storage Level Controller Circuit

Last Updated on January 4, 2024 by Swagatam 19 Comments

storage

In this post I have explained a simple material storage level controller circuit which can be used for automatically activating and deactivating a storage filling motor whenever the storage container is filled to its stipulated threshold level. The idea was requested by Mr Sladjan. Circuit Objectives and Requirements I need help with the engine control […]

Filed Under: Sensors and Detectors Tagged With: Controller, Level, Material, Storage

Arduino Barometric Pressure Sensor Circuit – Working and Interfacing Details

Last Updated on November 25, 2023 by Swagatam 4 Comments

P 20161024 002151

In this article we are going to explore, what is a Barometer and how to interface a barometric BMP180 sensor with Arduino. We will also be exploring some of its important specification and finally I have explained how to predict weather using barometric readings. What is Barometer? Barometer is an instrument for measuring atmospheric pressure. […]

Filed Under: Sensors and Detectors Tagged With: Arduino, Barometric, Interfacing, Pressure, Sensor, Working

LPG Leakage SMS Alert using MQ-135 – Get Warning Message in your Cellphone

Last Updated on September 11, 2019 by Swagatam 4 Comments

GSM

In this article I will show how 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. Using MQ-135 as the Sensor We are […]

Filed Under: Sensors and Detectors Tagged With: 135, Alert, Leakage, LPG, MQ, SMS

MQ-135 Air Quality Sensor Circuit – Working and Interfacing with Program Code

Last Updated on August 9, 2019 by Swagatam 17 Comments

In this article I have explained 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. What is MQ-135 sensor? MQ-135 is an air quality or air pollution measuring sensor device. It […]

Filed Under: Sensors and Detectors Tagged With: 135, Interfacing, MQ, Quality, Sensor, Working

How to Make a Transformer Winding Counter Circuit

Last Updated on June 23, 2019 by Swagatam 17 Comments

In this post I have explained how to make a simple transformer winding counter circuit using ordinary LEDs and also through an advanced digital display circuit. The idea was requested by one of the dedicated readers of this blog Circuit Objectives and Requirements I want a circuit which counts a number of turns for winding […]

Filed Under: Sensors and Detectors Tagged With: Counter, Transformer, Winding

Deep Soil Metal Detector Circuit – Ground Scanner

Last Updated on January 1, 2019 by Swagatam 17 Comments

fig1

In this post I have explained 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 […]

Filed Under: Sensors and Detectors Tagged With: Deep, Detector, Ground, Metal, Scanner, Soil

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