Using an NTC with Tasmota

Justin Adie

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Dec 18, 2022, 4:50:00 AM12/18/22

to TasmotaUsers

Hi all

I am using a 4000k (beta) 10k NTC with tasmota on an esp32.

The reported temps are in the right ballpark (27.9C in lieu of 21.8C).

Is there a command to add a calibration factor? I’ve had a furtle in the online manual but nothing jumps out.

thanks
Justin

Philip Knowles

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Dec 18, 2022, 5:25:24 AM12/18/22

to Justin Adie, TasmotaUsers

You probably want ADCParam2 or ADCParam6

Analog Pin - Tasmota

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Justin Adie

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Dec 18, 2022, 10:03:55 AM12/18/22

to Philip Knowles, TasmotaUsers

Switching to the (undocumented) alternate mode of calculation using the fourth parameter of adcparam2 brings the temperature to within 1/10 degree of accuracy. Which is within measurement error.

thanks

Justin

On 18 Dec 2022, at 12:21, Justin Adie <justi...@adieandco.com> wrote:

I've set adcparam2 on the right config for the board and sensor.

1,10000,10000,4000

But results need calibration as always.

Will check adcparam6

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