25 May '15, 2am

ESP8266 Keeps An Eye On Your Batteries

ESP8266 Keeps An Eye On Your Batteries

There are many more things to know about a battery than its voltage and current output at any given moment, and most of them can’t be measured with a standard multimeter unless you also stand there for a long time with an Excel spreadsheet. The most useful information is battery capacity, which can tell you how much time is left until the battery is fully charged or fully discharged. [TJ] set out to create a battery data harvester, and used the ubiquitous ESP8266 to make a fully-featured battery monitor . Measuring battery capacity is pretty straightforward but it does take time. A battery is first benchmarked to find its ideal capacity, and then future voltage and current readings can be taken and compared to the benchmark test to determine the present capacity of the battery. The ESP8266 is a relatively good choice for this kind of work. Its WiFi connection allows it to ...

Full article: http://hackaday.com/2015/05/24/esp8266-keeps-and-eye-on-y...

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