The Environment Agency monitor the height of the river near my house however they only update their public website every six hours and charge a fortune for the live feed. My goal is to create an open firmware for river monitoring with the Spark Core and HC-SR04 and an online API for aggregating live river data. From this a selection of early warning systems can be created and integrated with rainfall measurements.
I made an error in my calculations with my solar charging circuit so my solar output is 10% of what it should be. I have ordered a larger panel and am working on putting the core to sleep when it is not taking measurements. This means I will not be able to poll a variable on the core and will have to get the core to post the data at time of reading.
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