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Sensor

How to Connect a TSOP1738 IR Sensor

Last Updated on January 30, 2026 by Swagatam 74 Comments

TSOP17XX series devices are advanced infrared sensors having a specified center frequency of operation which makes their detection extremely reliable and foolproof. In this post I have explained how to connect a TSOP series infrared sensor and use it for a specified IR remote control operations. TSOP IR Sensor Specifications A TSOP series of IR […]

Filed Under: Electronics Theory, Sensors and Detectors Tagged With: Connect, IR, Sensor, TSOP1738

7 Best Touch Sensor Switch Circuits Explored

Last Updated on November 29, 2025 by Swagatam 82 Comments

touch2Bsensor

In this post I have explained 8 easy methods of building touch sensor switch circuits at home, which can be used for switching 220 V appliances ON/OFF with mere finger touch operat ions. The first one is a simple touch sensor switch using a single IC 4017, the second one employs a Schmidt trigger IC, […]

Filed Under: Sensors and Detectors Tagged With: Best, Circuits, Explored, Sensor, Switch, Touch

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

50A High Current Sensor IC ACS758: Circuit Diagram

Last Updated on June 12, 2025 by Swagatam 5 Comments

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

Reed Switch Sensor Module Explained with Circuit Diagram

Last Updated on April 30, 2025 by Swagatam 2 Comments

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 4 Comments

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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