# LoraWAN Water temperature with TTN

**URL:** <https://forum.meshat.se/t/lorawan-water-temperature-with-ttn/76>\
**Category:** Bloggar\
**Created:** [2 Augusti 2026 19:58 UTC](https://forum.meshat.se/t/lorawan-water-temperature-with-ttn/76 "2026-08-02T19:58:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Louie](https://forum.meshat.se/user_avatar/forum.meshat.se/louie/32/152_2.png) [@Louie](https://forum.meshat.se/u/Louie)\
**Post date:** [2 Augusti 2026 19:58 UTC](https://forum.meshat.se/t/lorawan-water-temperature-with-ttn/76/1 "2026-08-02T19:58:00Z")

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My first battery powered LoRaWAN water node failed due to a single loose wire, so I completely overengineered version two. In this post I explain how I built a solar supplemented telemetry station with an INA219 sensor, a strict battery management system, and custom firmware pushing data straight to Grafana.

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Detta är ett kopplat diskussionsämne till det ursprungliga inlägget på [https://louie.se/projects/lorawan-water-temperature-with-ttn/](https://louie.se/projects/lorawan-water-temperature-with-ttn/)