Thermystor ATC Semitec 104NT-4-R025H42G and Creality 4.2.2 Board

General Discussion
1

Basic Information:

Printer Model: Ender 3
MCU / Printerboard: Creality 4.2.2

I bought a Trianglelab CHC CR-10 Hotend that i have installed on my machine, apparently it has an integrated thermystor (ATC Semitec 104NT-4-R025H42G).

my printer.cfg has the sensor specified as:

sensor_type: ATC Semitec 104NT-4-R025H42G

The Creality board has a 3.3v ADC (and a pull up resistor = 4.7k Ohms ) i read somewhare that Klipper´s default ADC voltage is 5 , since i have not specified the adc voltage as 3.3v in printer.cfg i assume klipper doesn´t know that the real adc is 3.3 v , is this correct?

2

Where?

Best is to stick to the official Klipper reference:

https://www.klipper3d.org/Config_Reference.html#common-thermistors

There for a thermistor the ADC voltage is not relevant.

BTW: Most printer boards run on 3.3V

You need it for Common temperature amplifiers:

https://www.klipper3d.org/Config_Reference.html#common-temperature-amplifiers

3

Hi here you have the solution

Regards