Temperature of AHT20 sensor keeps rising on Wemos S2 mini

[Karosm]

@stephanvierkant

And the values are perfectly aligned with the other 12 sensors I’ve got.

Good enough.

@stephanvierkant

And I can’t remove the ENS160 because it’s one device.

Remove the component from your code.

@stephanvierkant

I already have a 10cm wire between the sensor and the ESP.

I would suggest normally to have that kind of wiring, but your case is so weird, you could try with longer one. I remember some case with another brand ht sensor suffering from close contact to Esp (not thermally).

Anyway, like you can see there’s not a lot to offer at this point…
Esphome could have bug with sensor internal heater control, but just for Esp32, not so probable.
And I expect you have tried other pins already.

[RPAncap]

Hello I had the same problem as you. I think I managed to solve it. I did it by lowering l2c frequency to low value - 1000 Hz (default is 50khz) I also read the value every only every 3 minutes. I think the issue is that with high polling frequency the sensor itself heats up.

Now from early testing it looks to be good.

[lutz108]

This was helpful! Reducing the frequency caused an immediate temperature drop. Before, it was 3-5 °C above a thermometer right next to it