# Water pressure sensor for central heating

**URL:** <https://discourse.nodered.org/t/water-pressure-sensor-for-central-heating/57045>\
**Category:** Hardware\
**Created:** [22 January 2022 10:06 UTC](https://discourse.nodered.org/t/water-pressure-sensor-for-central-heating/57045 "2022-01-22T10:06:45Z")\
**Posts on this page:** 1\
**Showing post:** 46

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**Author:** ![wolfred](https://avatars.discourse-cdn.com/v4/letter/w/838e76/32.png) [@wolfred](https://discourse.nodered.org/u/wolfred)\
**Post date:** [4 February 2022 17:34 UTC](https://discourse.nodered.org/t/water-pressure-sensor-for-central-heating/57045/46 "2022-02-04T17:34:17Z")

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ok, @BartButenaers, done. Thank your for your image 🙂

> [@Reading analog gauge values in NodeRED](https://discourse.nodered.org/t/reading-analog-gauge-values-in-nodered/57779):
>
> I need to get the numeric value every 5 minutes from an analog gauge. The gauge looks like this: [image] I looked in this topic some years ago and asked a question on Stack Exchange: [image recognition - Reading a value of a real gauge - Artificial Intelligence Stack Exchange](https://ai.stackexchange.com/q/4415/10586) My assumption was, that reading a simple value of a gauge should be feasible with a Raspberry Pi or cheaper hardware, some software and little configuration. But it seems we are deep in AI here. Training various needle …

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