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Newly Updated Circuit Projects:

Remote Controlled Fish Feeder Circuit – Solenoid Controlled

Last Updated on January 4, 2024 by Swagatam 27 Comments

fishfeeder

In this design a solenoid is operated using an IR remote control, which in turn toggles the fish feeder mechanism. In this article I have explained how to make a simple infrared controlled fish feeder circuit. The idea was requested by Mr. Harishvar. Technical Specifications I just want a circuit which should turn on when […]

Filed Under: Remote Control Circuits Tagged With: Controlled, Feeder, Fish, Remote, Solenoid

How to Connect a TSOP1738 IR Sensor

Last Updated on May 20, 2026 by Swagatam 74 Comments

TSOP17XX series devices are advanced infrared sensors having a specified center frequency of operation which makes their detection extremely reliable and foolproof. In this post I have explained how to connect a TSOP series infrared sensor and use it for a specified IR remote control operations. TSOP IR Sensor Specifications A TSOP series of IR […]

Filed Under: Electronics Theory, Sensors and Detectors Tagged With: Connect, IR, Sensor, TSOP1738

2 Simple Washing Machine Circuits Explained

Last Updated on June 30, 2026 by Swagatam 9 Comments

simple2Bwashing2Bmachine

In this post I have explained how to make a couple of simple washing machines using a bidirectional single motor with timer and a simple version using cam shaft mechanism, cheaply. In the first design we use a bidirectional, alternately rotating clockwise and counter clockwise with a pause in the middle: Audio/Video Representation Circuit Working […]

Filed Under: Home Electrical Circuits, Motor Controller Tagged With: Machine, Simple, System, Washing

Borewell Motor Pump Starter Controller Circuit

Last Updated on June 30, 2026 by Swagatam 53 Comments

dry2Brun

In this post I have explained a circuit which controls a submersible borewell motor by operating its red (Start) and green (Stop) buttons, in response to low level, high level water conditions, and also in a condition where the motor may experience a dry run situation. The idea was requested by Mr. Vamsi. Automatic Start/Stop […]

Filed Under: Motor Controller Tagged With: Borewell, Controller, Motor, Pump, Starter

Make Free Drinking Water from Sea Water

Last Updated on June 30, 2026 by Swagatam 16 Comments

sea2Bwater2Bdesalination

In this post I have explained a cheap yet effective method of desalinating large quantities of sea water into free drinking water at home. The idea was requested by Mr. Mike. Technical Specifications This is Mike Cardenas and am writing to you with reference to your invention of a Solar Water desalination set-up from 2011 […]

Filed Under: Energy from Magnets and Earth Tagged With: Drinking, Free, Water

Wireless Home Security Circuit – Solar Powered

Last Updated on July 6, 2019 by Swagatam Leave a Comment

warning2Bsecurity

In this article I have explained a remote controlled wireless home security circuit using which enables the detection of a possible intrusion way in advance depending on how and where the remote sensors are positioned over the selected strategic locations and the desired distance from the house. The idea was requested by Mr. Dave Monette. […]

Filed Under: Security and Alarm Tagged With: Home, Powered, Security, Solar, Wireless

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