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Mini Projects

Electronic Measuring Tape Circuit using Ultrasound

Last Updated on June 23, 2026 by Swagatam 2 Comments

electronic measuring tape circuit

Everyone is familiar with the mechanical measuring tape made of wood to measure human height. We offer you an original electronic version that operates based on the use of ultrasound. The circuit can be also used to measure distances between two surfaces or walls. Basic Working Ultrasounds are part of the range of sounds that […]

Filed Under: Mini Projects Tagged With: Electronic, Measuring, Tape, Ultrasound

2 Digital Potentiometer Circuits Explained

Last Updated on June 23, 2026 by Swagatam 19 Comments

DS 1869 potentiometer circuit

In this post I have explained a 2 simple, single chip digital potentiometer circuits which can be controlled through a single pushbutton, a dual pushbutton (up/down) or even through external digital (CMOS/TTL) input triggers. 1) About DS1869 Dallastat TM is a rheostat or potentiometer. This unit delivers 64 conceivable consistent tap outputs over the over-all […]

Filed Under: Mini Projects Tagged With: Circuits, Digital, Explained, Potentiometer

Make this Simple Set Reset Circuit using IC 555

Last Updated on June 23, 2026 by Swagatam 42 Comments

In this post I have explained a simple IC 555 set/reset application circuit for activating or deactivating a relay alternately. Audio/Video Representation Circuit Operation This electronic set reset circuit is very simple, easy to implement and very useful. It can provide you many applications options in cases where it may be necessary to toggle (switch […]

Filed Under: Mini Projects Tagged With: 555, Reset, Simple

Fishing YoYo Stop-Motion Switch Circuit with Indicator

Last Updated on June 23, 2026 by Swagatam 1 Comment

a Stop Motion Circuit 1

In this post I have explained a stop-motion switch circuit or a strike indicator for aiding fishing yo yo applications. The idea was requested by Mr. Mike. Technical Specifications (kindly bear the long discussion) Hello Sir, My name is Mike. I am the one requesting help with this stop-motion switch from the “Homemade Circuits” Blog […]

Filed Under: Mini Projects Tagged With: Fishing, Indicator, Motion, Stop, Switch, YoYo

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