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Firmware Configuration for Semitec 104GT-2

Connect the heater-cartridge and thermistor to your electronics board. Please refer to the documentation specific to your electronics for pin-outs and other technical information which may be relevant to the hotend installation.

Marlin

Reconfigure your firmware for the Semitec 104GT2 thermistor: In configuration.h:

  • #define TEMP_SENSOR_0 5

For safety it is strongly recommended to do the following:

  • Set the minimum temperature to detect bad wiring (HEATER_0_MINTEMP 5 in configuration.h)

In newer versions of Marlin there are extra features for Thermal Runaway Protection should your thermistor come loose. Upload the new firmware to your electronics.

Repetier

Use thermistor definition number 8:

  • #define EXT0_TEMPSENSOR_TYPE 8

Or select "ATC Semitec 104-GT2" if using the Online Configuration Tool (v091)

For safety it is strongly recommended to do the following:

  • Set the Minimum defect temperature to ensure that the thermistor shorting out is caught by the firmware.

New in Online Configuration Tool (v092) are the two options to also improve safety:

  • Decouple hold variance and Decouple min temp. rise to detect the thermistor coming loose. These must be set appropriately for your system to ensure that they work properly.

Upload the new firmware to your electronics.

Smoothieware

Use thermistor definition “Semitec”:

  • temperature_control.hotend.thermistor Semitec

Upload the new firmware to your electronics.

RepRapFirmware

Use the Beta value 4267K.​ Upload the new firmware to your electronics.