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Circuits designed by David Johnson, P.E.
Last Updated on: Saturday, December 30, 2017 08:12 AM

List of Dave's Circuit Designs

Text & Graphics Copyright David A. Johnson, PE  --  ALL Rights Reserved.
LINKING to Dave's circuits is permitted but DO NOT COPY CONTENT to your WEB SITE server!




Water (Liquid) Sensor / Detector Circuits
 
Circuits Designed by Dave Johnson, P.E. :

Locate a Plastic Pipe

Monitor Water Seepage

Piezoelectric Water Flowing Indicator

Plastic Pipe Finder

Water Cistern Level Alarm

Water Filling Station Controller

Water Flowing in Pipe Indicator

Water Level Monitor

Water Seepage Alarm

Water Seepage Monitor

Alarm sounds when Water is Detected

Doggie Water Dispenser Alarm

Electrode-less Water Level Monitor

 

Dave's Circuits

Hobby Circuits

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  David A. Johnson, P.E. about these circuits

 


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Copyright  January, 1998 - December, 2017     David A. Johnson & Associates.  All Rights reserved. 


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