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Automatic

Climate Dependent Automatic Fan Speed Controller Circuit

Last Updated on June 30, 2026 by Swagatam 32 Comments

temperaturecontrolledfandimmercircuit

The following circuit of a temperature or climate controlled automatic fan speed regulator circuit was requested by one of the  followers of this blog Mr.Anil Kumar. I have explained more about the proposed design. The Design As can be seen in the given diagram, a very simple concept has been implemented in the proposed design of a climate controlled […]

Filed Under: Motor Controller Tagged With: Automatic, Climate, Controller, Dependent, Speed

Automatic Door Controller Circuit Diagram using a Single Push-Button

Last Updated on June 30, 2026 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

Automatic Curtain Open-Close Circuit

Last Updated on June 30, 2026 by Swagatam Leave a Comment

We are happy to share an automatic curtain control circuit kindly provided by Mr. August Peterson. This design helps to open and close curtains by sensing light from the surroundings. It uses an LM393 comparator, a solar panel as a light sensor and a 24V motor. The circuit makes the curtain open in the morning […]

Filed Under: Motor Controller Tagged With: Automatic, Close, Curtain, Open

Automatic Torque Optimizer Circuit in Electric Motors

Last Updated on June 30, 2026 by Swagatam 22 Comments

In this article I have explained a circuit design which will help to optimize the torque of an induction motor used in electric vehicles, by analyzing its current consumption. Using a IC 555 Inverter for Toque Control The design is specifically intended for electric vehicles which are designed to work with induction motors, and therefore here […]

Filed Under: Motor Controller Tagged With: Automatic, Electric, Motors, Optimizer, Torque

SMS Based Pump Controller with Automatic Dry Run Shut Off

Last Updated on June 11, 2026 by Swagatam 22 Comments

irrigation system

In this post I will show how to construct a SMS based water pump controller with automatic shutdown of pump when no water flow through the pump is detected.  We will also construct another much simpler automatic dry run preventer circuit without GSM in the next half of the article. What is Dry Run in […]

Filed Under: Arduino Projects, Automation Projects Tagged With: Automatic, Based, Controller, Pump, Shut, SMS

Automatic Irrigation Circuit using Arduino

Last Updated on June 9, 2026 by Swagatam 7 Comments

In this post I will show how to construct an automated water irrigation system for small garden using arduino and soil moisture sensor. Introduction The proposed system can monitor the soil moisture level and when soil moisture goes below preset value, the 12V DC pump will be triggered for predetermined period of time. The status […]

Filed Under: Arduino Projects, Automation Projects Tagged With: Arduino, Automatic, Irrigation

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