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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

How to Use TTP223 Capacitive Touch Switch Module [Pinouts Explained]

Last Updated on February 1, 2024 by Swagatam 80 Comments

TTP223 touch pad side compressed

In this article I have explained how to connect and use the TTP223 capacitive touch switch module. These modules work using 2.5V to 5V. They are all pre-debounced, all you need is to provide the DC supply across the VC and GND terminals, and you get an output in the middle. So it is really […]

Filed Under: Sensors and Detectors Tagged With: Capacitive, Module, Pinouts, Switch, Touch, TTP223

ON/OFF Relay Switch Circuit using Reflection Sensor

Last Updated on May 13, 2023 by Swagatam Leave a Comment

ON OFF switch circuit using IR reflection sensor CNY70

This 220 V ON/OFF electronic relay switch can be toggled ON/OFF simply by alternately bringing your finger close to the reflection sensor CNY70. About CNY70 CNY70 is an infrared reflecting sensor comprised of an infrared emitting diode and a phototransistor housed in a tiny plastic container. The sensor operates by generating infrared light and sensing […]

Filed Under: Sensors and Detectors Tagged With: OFF, ON, Reflection, Relay, Sensor, Switch

Mains AC Current Detector Switch Circuit

Last Updated on May 1, 2023 by Swagatam 4 Comments

current transformer prototype image

The circuit I have I have explained in this article allows one to detect the current consumed by a device and to power one or more other devices accordingly. Indeed, the solution of a switchboard is not always applicable because it is often not very practical. Furthermore, some devices such as computers only start when […]

Filed Under: Sensors and Detectors Tagged With: AC, Current, Detector, Mains, Switch

Whistle Activated Switch Circuit

Last Updated on January 2, 2024 by Swagatam Leave a Comment

whistle activated switch circuit diagram

In this post I have explained how to build a simple whistle sound operated relay circuit, which can be used for switching ON/OFF a 220 V load through whistle sounds. You can consider this circuit to be a whistle operated remote control circuit which will operate a connected load remotely through the sound of whistling. […]

Filed Under: Remote Control Circuits Tagged With: Activated, Switch, Whistle

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