# DS18B20 sensor\[s\] on ESP

**URL:** <https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239>\
**Category:** General\
**Created:** [25 January 2026 17:29 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239 "2026-01-25T17:29:19Z")\
**Posts on this page:** 15\
**Page:** 2

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**Author:** ![Jibun-no-Kage](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/jibun-no-kage/32/99316_2.png) [@Jibun-no-Kage](https://discourse.nodered.org/u/Jibun-no-Kage)\
**Post date:** [29 January 2026 17:46 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/21 "2026-01-29T17:46:21Z")

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I just ordered a few of the ESP32-C3 super minis to play with... even though they can have WIFI signal issues (work arounds are published).

I am going to create some i2c sensor based 'Zone' monitors, since my house has a number of 'Zones'... do to its design. I did this with Pi Zeros years ago, that updated a database, and let me watch how my house climate changes, room to room, zone to zone.

Get this, I can tell where people are in what room, based on the humidity level changes! Go figure.

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**Author:** ![jbudd](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Post date:** [29 January 2026 18:23 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/22 "2026-01-29T18:23:41Z")

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> [@Jibun-no-Kage](#):
>
> I can tell where people are in what room, based on the humidity level changes!

And to some extent, what they are getting up to! 😳

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**Author:** ![Jibun-no-Kage](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/jibun-no-kage/32/99316_2.png) [@Jibun-no-Kage](https://discourse.nodered.org/u/Jibun-no-Kage)\
**Post date:** [30 January 2026 18:47 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/23 "2026-01-30T18:47:32Z")

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@jbudd, well that would need a camera! LOL

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**Author:** ![borpin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/borpin/32/1765_2.png) [@borpin](https://discourse.nodered.org/u/borpin)\
**Post date:** [31 January 2026 11:29 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/24 "2026-01-31T11:29:18Z")

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> [@jbudd](#):
>
> Does anyone have experience getting DS18B20 sensors to work on ESPs?
> 
> I have tried Tasmota on a Wemos D1 Mini

I've got several setup (DS18B20, Tasmota, D1 Mini) - 6 sensors per ESP device (max it'll handle reliably). Rock solid 🙂

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**Author:** ![jbudd](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Post date:** [31 January 2026 11:44 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/25 "2026-01-31T11:44:49Z")

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Which GPIO pin do you use? And which flavour of Tasmota?

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**Author:** ![borpin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/borpin/32/1765_2.png) [@borpin](https://discourse.nodered.org/u/borpin)\
**Post date:** [31 January 2026 15:55 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/26 "2026-01-31T15:55:46Z")

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> [@jbudd](#):
>
> Which GPIO pin do you use?

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/9/c/9cec35fb2fa1612754a49d3c93ec6c607f6274e1.png)

> [@jbudd](#):
>
> And which flavour of Tasmota

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/0/5/056dbc112ae8d6ce0f691730cd452d2cfb3858d8.png)

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/c/e/cece7456e3ab64e80f1dbae6b551cd3281cd658e.png)

HTH 🙂

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**Author:** ![fernandezjm](https://avatars.discourse-cdn.com/v4/letter/f/9f8e36/32.png) [@fernandezjm](https://discourse.nodered.org/u/fernandezjm)\
**Post date:** [31 January 2026 17:46 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/27 "2026-01-31T17:46:47Z")

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I use ESPEasy, which is similar to Tasmota and works very well with 18DS20.

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**Author:** ![jblack](https://avatars.discourse-cdn.com/v4/letter/j/c4cdca/32.png) [@jblack](https://discourse.nodered.org/u/jblack)\
**Post date:** [2 February 2026 21:02 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/28 "2026-02-02T21:02:57Z")

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I’m not going to help here but I’ve been using ESP 32’s and Tasmota for years and have not experienced any issues. Not with connectivity nor with WiFi issues. Currently have about 6-8 temperature sensors about the house.

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**Author:** ![jbudd](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Post date:** [2 February 2026 21:16 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/29 "2026-02-02T21:16:17Z")

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Thanks for all the feedback.

The consensus of opinion seems to be that it should work.  
So I have ordered some more sensors and will try again and report back.

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [2 February 2026 22:17 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/30 "2026-02-02T22:17:04Z")

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Maybe a bit late, but do get the sensors from a reputable source, there are a lot of fakes about.

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**Author:** ![jbudd](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Post date:** [2 February 2026 22:30 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/31 "2026-02-02T22:30:12Z")

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> [@Colin](#):
>
> get the sensors from a reputable source

Happy Go Lucky Store, Shenzhen City.  
As reputable as the Baron of Foy I should think.  
They do stock a range of form factors though, which is encouraging.

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/7/b/7b17179b5c3fb5576ec6cc5dae9703d99e247bfe.jpeg)

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**Author:** ![craigcurtin](https://avatars.discourse-cdn.com/v4/letter/c/94ad74/32.png) [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Post date:** [4 February 2026 01:45 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/32 "2026-02-04T01:45:45Z")

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Can you post a link to that store - i have not seen a couple of those form factors before and they could come in handy

Craig

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**Author:** ![jbudd](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Post date:** [4 February 2026 03:14 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/33 "2026-02-04T03:14:39Z")

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This is the link for the sensors. [https://www.aliexpress.com/item/1005007010180076.html](https://www.aliexpress.com/item/1005007010180076.html)

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**Author:** ![kuema](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/kuema/32/6542_2.png) [@kuema](https://discourse.nodered.org/u/kuema)\
**Post date:** [4 February 2026 05:25 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/34 "2026-02-04T05:25:41Z")

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I've had a couple of those and most of them were China clones, but working as expected and reasonably accurate.

With one recent batch though, I wasn't able to change the accuracy, it was fixed at maximum (12-bit). Which is annoying, because the reading takes a lot longer, especially with multiple devices one the bus.

I didn't buy on Aliexpress, but a "trusted" vendor/reseller here in Germany. So that won't spare you from counterfeits these days 😕

In case anyone is interested, here's a good documentation on how to distinguish these clones and their pitfalls.

> **[GitHub - cpetrich/counterfeit\_DS18B20: How to tell original from fake DS18B20 temperature...](https://github.com/cpetrich/counterfeit_DS18B20)**
>
> How to tell original from fake DS18B20 temperature sensors.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [18 February 2026 05:26 UTC](https://discourse.nodered.org/t/ds18b20-sensor-s-on-esp/100239/35 "2026-02-18T05:26:31Z")

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