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Door

Automatic Door Controller Circuit Diagram using a Single Push-Button

Last Updated on January 17, 2025 by Swagatam 17 Comments

door controller circuit

This door controller circuit works in this way: Initially the door is in the closed state. When a push button is pressed, the door begins opening until it reaches the end of the course. When it reaches the end, it automatically reverses its direction and now the door begins closing. It keeps moving until it […]

Filed Under: Motor Controller Tagged With: Automatic, Button, Controller, Door, Push, Single

Day/Night Triggered Automatic Door Lock Circuit

Last Updated on January 31, 2024 by Swagatam Leave a Comment

darkness activated door lock circuit

In this post I have explained a simple day, night triggered automatic door lock circuit, which can be used for autonomously unlocking a kennel door during day break, and locking it when night sets in. The idea was requested by an avid reader of this blog, Mr. Norman, as given below. Design Request and Specifications […]

Filed Under: Automation Projects, Pets and Pests Tagged With: Automatic, Door, Lock, Night, Triggered

Two Tone Door Bell Circuit

Last Updated on November 15, 2023 by Swagatam Leave a Comment

two tone door bell circuit compressed

The electronic 2 tone door bell circuit is designed around the popular IC 555. The IC 555 is extensively applied in numerous varieties of timers and also as a basic oscillator circuit. In this particular project both the timer and the oscillator functions of the IC are utilized. As soon as the indicated push-button is […]

Filed Under: Home Electrical Circuits, Audio and Amplifier Projects Tagged With: Bell, Door, Tone

Infrared Car Door Lock Security Circuit

Last Updated on November 11, 2023 by Swagatam Leave a Comment

IR transmitter compressed

In this post I have explained how to build a simple yet foolproof infrared based remote control, which can be used for locking and unlocking any vehicle door through a personal remote handset. The remote controlled vehicle door lock is foolproof since it works only with a specific IR frequency range, and will not respond […]

Filed Under: Automobile Electronics Tagged With: Door, Infrared, Lock, Security

Automatic Door Circuit using PIR – Touchless Door

Last Updated on January 3, 2024 by Swagatam 12 Comments

PIR gate controller

Along with social distancing and masks, the other major thing the post COVID-19 era has compelled the world to implement is to go touchless. This is being recommended for the many public devices, such as doors, hand sanitizers, buttons, switches etc. in order to restrict the spread of viruses that may be caused due to […]

Filed Under: Automation Projects Tagged With: Automatic, Door, PIR, Touchless

Door Security Alarm Circuit for Alerting if Door was Opened

Last Updated on August 25, 2023 by Swagatam 22 Comments

dooralarm

The door security alarm circuit discussed in this article alerts the user whenever the door fitted with the circuit is opened or closed or even moved from its original locked position. Using a Reed Relay and Magnet for the Triggering The idea utilizes the very basic reed relay and magnet concept across the door and […]

Filed Under: Security and Alarm Tagged With: Alarm, Alerting, Door, Opened, Security

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