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Automatic Sliding Gate Controller Circuit

Last Updated on May 16, 2026 by Swagatam 86 Comments

slider2Bgate2Bcontroller

In this post we investigate a circuit, designed for implementing an automatic sliding gate or door action, and includes a set of features as specified in the request. The idea was suggested by Mr. Andreas. Technical Specifications Can you help me to design a simple sliding gate controller. How can work its like this…Press a […]

Filed Under: Automation Projects Tagged With: Automatic, Controller, Gate, Sliding

Hen House Automatic Door Controller Circuit

Last Updated on May 16, 2026 by Swagatam 36 Comments

lightdependantdoorlock

In this article I have explained an automatic door mechanism circuit that responds to the ambient light conditions by keeping the door open during day time and closed during night. Here the application is used for operating a hen house door. The idea was requested by Mr. Gavin Sweet Technical Specifications I have a project […]

Filed Under: Automation Projects Tagged With: Automatic, Controller, Door, House

Day/Night Triggered Automatic Door Lock Circuit

Last Updated on May 16, 2026 by Swagatam 12 Comments

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

Sound Activated Automatic Amplifier Mute Circuit

Last Updated on May 15, 2026 by Swagatam 5 Comments

ampmutecircuitsoundoperated

The following article presents a simple sound operated/activated amplifier muting circuit which enables the amplifier to silence itself as soon a voice or an external sound occurs across the detector MIC. The circuit was requested by Mr. Seok Sothea. Technical Specifications I want to make a circuit about voice interrupt music..this circuit consists of two input, audio […]

Filed Under: Audio and Amplifier Projects Tagged With: Activated, Amplifier, Automatic, Mute, Sound

Automatic Ultrasonic Water Pump Motor Controller Circuit

Last Updated on May 14, 2026 by Swagatam 31 Comments

Transmitter

This project explains how to build a fully automatic ultrasonic water level controller where the water pump motor starts automatically when the tank level goes below a preset LOW level and stops automatically when the tank becomes FULL. The whole system is wireless, reliable, and there are no corrosion problems because the ultrasonic sensor never […]

Filed Under: Arduino Projects, Water Controller Tagged With: Automatic, Controller, Motor, Pump, Ultrasonic, Water

SG 3525 Automatic PWM Voltage Regulation Circuit

Last Updated on May 10, 2025 by Swagatam 12 Comments

partslist

In this post I have explained a simple configuration which can be added with all SG 3525/3524 inverter circuits for implementing automatic PWM output voltage regulation by the IC. The solution was requested by Mr. Felix Anthony. The Circuit Problem: Sir, I would need your help on a project about a schematic that I do […]

Filed Under: Voltage Control and Protection Tagged With: 3525, Automatic, PWM, Regulation, SG, Voltage

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