DS18B20 issues that everyone has

[domain_int]

To be upfront. I am not a programmer and don’t know how to fix this… And I totally acknowledge I am a back seat commentator.

If I knew how to contribute to fix this issue I would but that would take 5-7 years of education in a field that I don’t have.

So - why can’t there be a way of filter out NAN, scratchpad errors and timing/blocking issues within the esphome libraries. It’s not like it’s a minority that are experiencing these issues.

Surely some lines in code would resolve this?

I’ve tried everything, including suggestions from the OG Otto Winter, ChatGPT, this forum, DallasNg and even my own half assed attempts at lambdas to resolve this. Most of which crash/brick the daylights out of an ESP32.

See here:

DS18B20 w pullup crashes ESP32 (Cause - LAMBDAS)

EDIT: the real reason is in a post below - The cause - Lambdas DS18B20 w pullup crashes ESP32 (Cause - LAMBDAS) - #12 by domain_int I have a one-wire config set up for GPIO32 of an ESP32 (a relay x1 board). It has a 4.7k pullup resistor wired between the 3.3v and the GPIO pin Whenever I plug a DS18b20 into the pin of GPIO32, the ESP32 either doesnt boot or it crashes the ESP32 If take the DS18B20 out (its wired into a socket so its easy to add and remove), the ESP boots fine and connects to t…

And before anyone says it’s not possible because of this and this and this…

It IS possible - Shelly have done it.

All shelly units w DS18B20’S don’t complain (even when they’re connected to cheap DS18B20 clones). I’ve had 30 of them and speak from experience so they’re doing something better in their library than ESPHome.

Why dont I stay w Shelly’s then???
Well
1: Shelly’s can’t run a climate control onboard rock solid like ESPhome. They rely on Cloud or HA to achieve this unlike ESPhome.
2: Shelly traffic isn’t secure and encrypted like ESPHome
3: Shelly’s are flaky without an internet connection.
4: Shelly’s can’t do any form of onboard LED display at the same time as a climate control (even tho they don’t do onboard climate)
5: Shelly’s aren’t cheap.

Just suggesting to ppl that are smarter than me that the new one_wire/Dallas library could use some love from someone smarter than me.

Rant over.

[nicp]

Did you try basic troubleshooting like using a different esp module and different temperature sensor.

I have a lolin 32 esp module using a ds18b20 on pin 19 with no issues. No lambdas required.

[thermiek]

where did you buy the temp sensors? ali ?
they are fake but they may work…

i have same issues on 1 specific esp32 , there the tempsenor is broken after some days. (replaced already 3 temp sensors )

On my 2nd esp32 , same schematic , the temp sensor works fine.all time.