# 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:** 9

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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 13:08 UTC](https://discourse.nodered.org/t/rpi-zero-w-with-lm393-flying-fish-sensor/22007/9 "2020-02-21T13:08:03Z")

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Your temperature sensor problem could be due to this:

> [@Counterfeit DS18B20](https://discourse.nodered.org/t/counterfeit-ds18b20/18198):
>
> I just found this in another forum: [edit] This link [https://www.maximintegrated.com/en/support/faqs/ds18b20-faq.html](https://www.maximintegrated.com/en/support/faqs/ds18b20-faq.html) also shows that the real DS18B20 is also a lot more accurate than we think!

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