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Sensors and Detectors

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Smart Bathroom Exhaust Fan Controller Circuit with Sensors

Last Updated on July 1, 2025 by Swagatam 13 Comments

So here we are now making one automatic smart exhaust fan controller system using Arduino UNO which will work for three bathrooms that are all connected to a single ventilation pipe and one common exhaust fan. This whole project is going to be based on PIR sensors for human detection, VOC sensors for odor detection […]

Filed Under: Arduino Projects, Sensors and Detectors Tagged With: Bathroom, Controller, Exhaust, Sensors, Smart

50A High Current Sensor IC ACS758: Circuit Diagram

Last Updated on June 12, 2025 by Swagatam 1 Comment

So in this post we will try to understand everything about ACS758 current sensor, how this works, how we can use it, what is the technical specs, what is inside this IC and how to use in real circuits etc. This ACS758 is actually made by Allegro Microsystems and this is a very strong and […]

Filed Under: Sensors and Detectors, Voltage Control and Protection Tagged With: 50A, ACS758, Current, High, Sensor

INA219 Current Sensor Circuit Diagram and Datasheet

Last Updated on July 8, 2025 by Swagatam Leave a Comment

In this post we are going to understand this sensor called INA219, and this one is like a full smart sensor. It not only tells how much current is flowing but also tells voltage, and also calculates power, all in digital form. That means it talks with microcontroller through I2C lines. It is like an […]

Filed Under: Datasheets and Components, Sensors and Detectors Tagged With: Current, Datasheet, INA219, Sensor

ACS712 Current Sensor Circuit Diagrams and Datasheet

Last Updated on July 8, 2025 by Swagatam 1 Comment

Here we are going to learn one cool and very important current sensor device which we call ACS712. This small chip that look just like a normal 8-pin IC, is actually able to sense current from any load and give us a proportional analog voltage output which we can easily feed to Arduino or any […]

Filed Under: Sensors and Detectors Tagged With: ACS712, Current, Datasheet, Diagrams, Sensor

Reed Switch Sensor Module Explained with Circuit Diagram

Last Updated on April 30, 2025 by Swagatam Leave a Comment

Here we will try to understand this reed switch sensor module which may look small and nothing much, but it is actually very useful thing when we want to detect a magnetic field or just want to know if a magnet is coming closer or going away. This thing is called a reed switch sensor […]

Filed Under: Sensors and Detectors Tagged With: Explained, Module, Reed, Sensor, Switch

Impact Collision Switch Sensor Module and Circuit Diagram

Last Updated on April 28, 2025 by Swagatam Leave a Comment

Here we are going to learn about a very interesting small sensor called the Impact Collision Switch Sensor Module. This module is super simple but very useful especially when we want to detect a shock, collision, hit or a sudden tap on a surface. Now let us go step-by-step to understand everything about it. What […]

Filed Under: Security and Alarm, Sensors and Detectors Tagged With: Collision, Impact, Module, Sensor, Switch

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