# Solar-powered weather station

**URL:** <https://discourse.nodered.org/t/solar-powered-weather-station/12499>\
**Category:** Share Your Projects\
**Created:** [23 June 2019 07:17 UTC](https://discourse.nodered.org/t/solar-powered-weather-station/12499 "2019-06-23T07:17:47Z")\
**Posts on this page:** 1\
**Showing post:** 25

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**Author:** ![dynamicdave](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dynamicdave/32/96_2.png) [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)\
**Post date:** [2 August 2019 05:27 UTC](https://discourse.nodered.org/t/solar-powered-weather-station/12499/25 "2019-08-02T05:27:50Z")

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Hi Martin,  
Thanks for your continued interest in this project.

You're spot-on with your observations from the graphs. I've since modified the NR-flow to check the Li-Ion battery voltage and send a message ( via the 'telegram' node ) to my mobile phone if the value drops below +3.5V

I've used a MySQL database to store the weather station readings and modified the Node-RED flow created by Csongor Varga to produce a semi-dynamic graphing facility. (i.e. you can select one dataset then overlay another and another.). Checkout his excellent series of Youtube videos.

I might re-visit InfuxDB and Grafana (which I have running on one of my RPi(s) ).

I like the idea of using the INA219 - I'll give that some thought.

I've built a second weather station (WS) and so has my friend Paul @zenofmud who is located in Boston, USA. Between us we have developed a NR-flow whereby we can control all our weather stations. (e.g. I can stop Paul's WS from going into 'deepsleep', perform some readings, then put it back to sleep remotely from the UK - great fun.)

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