This project began after reading the article at http://www.edcheung.com/automa/water.htm. It seemed like a fun project that would allow me to re-learn some long unused skills.
It is probably NOT the most cost effective way to monitor water usage.
I was never able to make the ed cheung circuit work reliably; the circuit attached does work but is somewhat more complicated. As I saw problems, I did the equivalent of adding an electronic band-aid and moved on. I'm sure the circuit could be simplified/improved.
Monitoring the magnetic field of the Neptune meter provides a ridiculous level of resolution, approximately 116 counts per gallon. The actual divisor is determined by experiment and is affected by the physical placement of the Vernier MG-BTA sensor.
The circuit is tied to a Hobby-Boards 1Wire dual counter which is read using a Midon TEMP08 tied to an HT2. A periodic script reads the counts and does the math to produce the volume of water consumed.
Mark
It is probably NOT the most cost effective way to monitor water usage.
I was never able to make the ed cheung circuit work reliably; the circuit attached does work but is somewhat more complicated. As I saw problems, I did the equivalent of adding an electronic band-aid and moved on. I'm sure the circuit could be simplified/improved.
Monitoring the magnetic field of the Neptune meter provides a ridiculous level of resolution, approximately 116 counts per gallon. The actual divisor is determined by experiment and is affected by the physical placement of the Vernier MG-BTA sensor.
The circuit is tied to a Hobby-Boards 1Wire dual counter which is read using a Midon TEMP08 tied to an HT2. A periodic script reads the counts and does the math to produce the volume of water consumed.
Mark
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