# RPi zero w with LM393 / "flying fish" sensor

**URL:** <https://discourse.nodered.org/t/rpi-zero-w-with-lm393-flying-fish-sensor/22007>\
**Category:** Hardware\
**Created:** [20 February 2020 10:49 UTC](https://discourse.nodered.org/t/rpi-zero-w-with-lm393-flying-fish-sensor/22007 "2020-02-20T10:49:20Z")\
**Posts on this page:** 1\
**Showing post:** 14

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**Author:** ![ghayne](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ghayne/32/39_2.png) [@ghayne](https://discourse.nodered.org/u/ghayne)\
**Post date:** [21 February 2020 17:05 UTC](https://discourse.nodered.org/t/rpi-zero-w-with-lm393-flying-fish-sensor/22007/14 "2020-02-21T17:05:55Z")

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This may be of interest to people interested in water sensors:

> [@Cheap water level sensor](https://discourse.nodered.org/t/cheap-water-level-sensor/22060):
>
> I had a water leak in our airing cupboard cold water header tank a few weeks ago. The ballcock valve was leaking and whoever installed the tank had put the overflow pipe HIGHER than the inlet pipe, not a real problem but the inlet seal was leaking - no real damage done thankfully. I have been looking around for solutions to sense the level for an alarm system. I was looking through my components the other day and had a "aha" moment when I saw one of these: . I intend gluing thi…

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_[View the full topic](https://discourse.nodered.org/t/rpi-zero-w-with-lm393-flying-fish-sensor/22007)._