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Automatic Kennel Door Circuit with Day Night Lock

Last Updated on June 6, 2025 by Admin Leave a Comment

darkness activated door lock circuit

This article explains a simple automatic door locking system that works when day turns into night. This clever setup is made to automatically unlock a kennel door in the morning […]

Filed Under: Automation, Pets and Pests Tagged With: Automatic, Day, Door, Kennel, Lock, Night

Keypad Lock Circuit using a Single IC

Last Updated on January 10, 2018 by Admin Leave a Comment

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The post explains a simple failproof digital keypad security lock circuit using a keypad module and a single CMOS IC . Introduction A decimal keyboard, a CMOS IC, about three […]

Filed Under: Security and Alarm Circuit Tagged With: Keypad, Lock, Single

Door Lock Circuit using Digital Code

Last Updated on January 10, 2018 by Admin Leave a Comment

IMG 0005

In this post we try to analyze a simple door lock circuit using digital code that needs to pressed with a unique sequence in order to activate the door lock […]

Filed Under: Security and Alarm Circuit Tagged With: Code, Digital, Door, Lock

How to Make a Barcode Security Lock Circuit – Part1

Last Updated on February 17, 2018 by Admin Leave a Comment

barcodesensor

A basic barcode scanner circuit is described down this page article utilizing simply a couple of ordinary components for example an opamp, an LDR and an laser light. Everyone has […]

Filed Under: Security and Alarm Circuit Tagged With: Barcode, Lock, Part1, Security

How to Make a Barcode Security Lock Circuit – Part2

Last Updated on February 17, 2018 by Admin Leave a Comment

barcodescanner

In the earlier post we mastered a basic barcode sensor circuit, here we are going to research precisely how the felt pulses could be changed for obtaining unique sets of […]

Filed Under: Security and Alarm Circuit Tagged With: Barcode, Lock, Part2, Security

How to build a Infrared Remote Control Security Lock Circuit for Automotive Applications

Last Updated on June 5, 2025 by Admin 2 Comments

motorcyclesecuritylockcircuit

An easy, low-cost yet very beneficial infrared based remote controlled security lock could be researched in the following post. Infrared Remote Control Security Lock Circuit for Automotive Applications   The […]

Filed Under: Infrared, Remote Control Tagged With: Build, Control, Infrared, Lock, Remote, Security

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