Does anyone have experience getting DS18B20 sensors to work on ESPs? I have tried Tasmota on a Wemos D1 Mini and a Tenstar Robot C3 Supermini. When I connect the DSB1820 and 4.7K pull-up resistor, the ESP fails to boot, or at least it no longer connects to wifi, nor does it start it's own access p…

I took a brief look at ESP Home a while back. Didn't get much further than the phrase "tightly integrated with Home Assistant". However, I like the thought that it permits changing devices connected to the ESP without reprogramming (as Tasmota does too of course) I have a BME680 sensor on Tasmota …

[image] Sean-McG: Initial setup Comparison We can agree to differ. :smiley: ESPHome also supports some none-ESP MC's. ESPHome has documented support for nearly 600 peripherals, Tasmota has around 150 or so as best I can tell. So yes, your initial platform setup is slightly more complex but…

[image] jbudd: ESP-C3 super mini working with two DS18B20s It might be helpful to get to the bottom of this, as I do need to swap out a D1 for an ESP32, more likely to be an S2 mini, but will depend on price and availability I guess. Can you tell me what gpios you used and exactly how it was…

[image] Sean-McG: Can you tell me what gpios you used and exactly how it was wired up ? Yes of course. Board The device I used is an ESP32-C3 Super Mini. It's the cheapest of the ESP32 boards in this postage stamp size. I paid £1.40 each from Aliexpress. It has a USB C connector. They also …

[image] jbudd: ESP32-C3 Super Mini OK that explains the problem, a bad choice of GPIO :grinning: GPIO9 Input Mode Low/GND ROM serial bootloader for esptool High/VCC Normal execution mode The DS18B20 waits 15–60µs and then pulls the line low for 60–240µs to indicate it is present…

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, th…

[image] 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! :flushed_face:

@jbudd , well that would need a camera! LOL

[image] 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 :slight_smile:

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

[image] jbudd: Which GPIO pin do you use? [image] [image] jbudd: And which flavour of Tasmota [image] [image] HTH :slight_smile:

DS18B20 sensor[s] on ESP

General

jbudd 2 February 2026 22:30 31

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.

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DS18B20 sensor[s] on ESP

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