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Programmable Humidity Controller Circuit

Last Updated on January 26, 2026 by Swagatam 46 Comments

humiditysensorcircuit

The simple programmable humidity sensor circuit I have explained in this article can be used for controlling or maintaining a suitable level of humidity inside a close premise. The circuit could be used in poultry farms or similar areas where humidity level becomes crucial for keeping the animals healthy. The idea was requested by Mr. […]

Filed Under: Water Controller Tagged With: Controller, Humidity, Programmable

Light Dependent LED Intensity Controller Circuit

Last Updated on June 1, 2026 by Swagatam 27 Comments

ambient light dependent fading led lights

In this post I have explained a simple ambient light dependent LED illumination controller circuit. The light fades or intensifies proportionately i response to the ambient light conditions. With brighter daylights, the LEd illumination gets softer and vice versa. The idea was requested by one of the dedicated members of this blog. Technical Specifications While […]

Filed Under: Lamps and Lights Tagged With: Controller, Dependent, Intensity, LED, Light

Customized Water Flow Controller with Timer Circuit

Last Updated on January 27, 2019 by Swagatam 10 Comments

waterflowcontrollercircuit

In this article I have explained a customized water flow controller circuit with timer.he idea was requested by Mr. Daljeet Singh Sokhey. Technical Specifications Right now I am working on a different project and would like your help. There are 2 inputs and both must remain high for a period of 30 seconds for the […]

Filed Under: Timer and Delay Relay Tagged With: Controller, Customized, Flow, Timer, Water

Treadmill Motor Speed Controller Circuit

Last Updated on August 9, 2026 by Swagatam 360 Comments

In this post I have explained a simple, accurate, high torque treadmill motor speed controller circuit which may be effectively installed in similar units for acquiring PWM controlled variable speed feature. The idea was requested by Mr. Samuel. Technical Specifications I’ve a treadmill whose power failed completely…it had been imported from china and it’s like […]

Filed Under: Motor Controller Tagged With: Controller, Motor, Speed, Treadmill

Electronic Load Controller (ELC) Circuit

Last Updated on May 21, 2026 by Swagatam 86 Comments

ELCvoltagemonitorcircuit

In this post I have explained a simple electronic load controller or governor circuit which automatically regulates and controls the rotational speed of a hydro-electric generator system by adding or deducting an array of dummy loads. The procedure ensures a stabilized voltage and frequency output for the user. The idea was requested by Mr. Aponso […]

Filed Under: Grid and 3-Phase Tagged With: Controller, ELC, Electronic, Load

Poultry Feed Controller Timer Circuit

Last Updated on June 17, 2019 by Swagatam 4 Comments

poultryfeedcontrollercircuit

In this article I have explained a timer circuit specifically designed for detecting a poultry feed controller ON time period, and alarming a buzzer once the set time elapses. The idea was requested by one of readers of this blog. Technical Specifications Hello, I am a broiler poultry farmer. I have no electronic knowledge or skills. […]

Filed Under: Timer and Delay Relay Tagged With: Controller, Feed, Poultry, Timer

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