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Automatic

Automatic Night Activated Wireless Light Circuit for Paintings

Last Updated on June 8, 2026 by Swagatam 12 Comments

single relay 433 MHz remote control switch

In this article I have explained a basic wireless LED light circuit that may be used to autonomously turn on LED lights to illuminate artworks at nighttime.

Filed Under: Automation Projects, Lamps and Lights Tagged With: Activated, Automatic, Light, Night, Paintings, Wireless

7 Automatic Street Light Circuits [Using Relays and Solar Panel]

Last Updated on June 8, 2026 by Swagatam 35 Comments

simple single transistor street light circuit

In this article I will elucidate 7 useful yet simple automatic street light circuits using 220 V relays and solar panel. All the presented circuits can be used for automatically switching a lamp ON during night time and OFF during day time. What is an Automatic Street Light System An automatic street light system is […]

Filed Under: Automation Projects, Lamps and Lights Tagged With: Automatic, Circuits, Light, Relays, Solar, Street

Automatic Door Circuit using PIR – Touchless Door

Last Updated on May 16, 2026 by Swagatam 14 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

Automatic Hand Sanitizer Circuit – Fully Contactless

Last Updated on May 24, 2026 by Swagatam 128 Comments

hand saitizer dispenser

In this article I have explained how to make a low cost yet fully automatic hand sanitizer dispenser circuit which will allow a touch-free or contactless dispensing of the sanitizing liquid on the user’s hands. This contactless hand sanitizer circuit facilitates the user to access the sanitizing liquid on hands automatically without the need of […]

Filed Under: Automation Projects, Health related Projects Tagged With: Automatic, Contactless, Fully, Hand, Sanitizer

5 KVA to 10 KVA Automatic Voltage Stabilizer – 220 Volts, 120 Volts

Last Updated on January 3, 2024 by Swagatam 96 Comments

LM324 Operational Amplifier

Voltage stabilizer in the range of kVAs are powerful AC voltage stabilizer units specially designed for controlling and stabilizing high voltage fluctuations, for high power electrical equipment. In this article I have explained an easy to build a 7 stage high wattage in the order of 5000 to 1000 watts stabilizer circuit which can be […]

Filed Under: Voltage Control and Protection Tagged With: 220, Automatic, KVA, Stabilizer, Voltage, Volts

Arduino Automatic School/College Bell System

Last Updated on May 16, 2026 by Swagatam 73 Comments

LCD connx

In this post I will show how to construct an automatic school bell/college bell system using Arduino, 16 x 2 display and real time clock module. You can program this project to ring the bell up to 16 times a day at your preferred hour and minute. The length of the bell ring can be […]

Filed Under: Arduino Projects, Automation Projects Tagged With: Arduino, Automatic, Bell, College, School, System

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