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Mike, Great instructions and thanks for sharing your work. I've got my sparkfun data stream tied to your gadget on a google site page and it is plotting the sump water level in my basement. I want to add the ability to count the number of pump cycles per hour or sump cycles per week and estimate the number of gallons pumped out per day/week/month. I'm not sure how to "peak find" in the data table to pull out a pump event. Any ideas on where to go for that?
I experienced the same thing. The spinner that shows when the plot is loading isn't available, but it does work well without it.