34 lines
1.8 KiB
Markdown
34 lines
1.8 KiB
Markdown
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---
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title: Update on the sunpowered server
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date: 2015-05-02 14:54:05
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tags: [observability]
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series: sunpowered
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---
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Some, rather long, time ago I've added a [custom python](/posts/2014/04/21/adding-voltage-current-measurements-sunpowered-pi/)
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data acquisition and graphing to my sunpowered RaspberryPi installation
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on the balcony. Since then I've upgraded it to Raspi2 and ported the
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data thingy to influxdb + grafana. All 3 of those things I am very
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positively surprised by.
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RaspberryPi2 - definitely worth the upgrade - it's a speed demon now. Small caveat - I recommend
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installing raspbian from scratch, especially if you had some custom
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overclocking config, as these do not seem to be compatible between Pi1 and Pi2. Also RasPi2 needs a microsd card instead of full-sized one. As for
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the software - since everything went surprisingly smoothly this post is
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not much of a tutorial. Just go to [influxdb](http://influxdb.com/)
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and [Grafana](http://grafana.org/) and go through the respective
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installation documentation. You need x86 64bit server to host this, so
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unfortunately no self-hosting on RaspberryPi - at least I wasn't able to
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compile the software there. I've [changed the original python scripts slightly](https://github.com/cyplo/sunpowered/tree/master/software),
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to upload the data to influxdb instead of graphing directly via
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matplotlib. Then configured grafana to display some cool graphs and that
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was pretty much it - you can see the result at
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[data.cyplo.net](http://data.cyplo.net/dashboard/db/sunpowered).
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Right now I'm testing 2 different sizes of solar panels and
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batteries, hooked at the same time. The ADC is connected as it was
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before though, so a TODO is to add more measurements, to see how the
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individual panels' output change during the data and how does it affect
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each of the batteries.
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