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Firmware Configuration for the E3D v6 HotEnd

In the following stages we are going to configure the HotEnd in firmware then go on to do the final hot-tighten of the HotEnd. This can be done either on or off your printer, however where practical we recommend doing it off your printer, then mounting.

Connect the heater-cartridge and thermistor to your electronics board. If you have a non-12V system see this forum post. 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

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For safety it is strongly recommended to do the following:

Limit the maximum power to the heater in configuration.h:

PID_MAX xxx

Set the minimum temperature to detect bad wiring in configuration.h:

HEATER_0_MINTEMP 5

In newer versions of Marlin there are extra features for Thermal Runaway Protection should your thermistor come loose.

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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)

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For safety it is strongly recommended to do the following:

Limit the Max PWM value in the config file to ensure that current is limited to a safe value:

EXT0_PID_MAX xxx

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.

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Upload the new firmware to your electronics.

Smoothieware

Use thermistor definition “Semitec”:

temperature_control.hotend.thermistor Semitec

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For safety it is strongly recommended configure your firmware to limit the maximum heater power:

temperature_control.hotend.max_pwm xxx

________________________

Upload the new firmware to your electronics.

RepRapFirmware

Use the Beta value 4267K.​

For safety it is strongly recommended configure your firmware to limit the maximum heater power:

define PID_MAX {-1, xxx}

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Upload the new firmware to your electronics.

PID Tuning

  1. Connect to the printer
  2. Run M303 to autotune your PID - check out Thomas Sanladerer's video guide for more information. *Please note that not all firmwares support autotune, and you may need to tune manually.
  3. Set the HotEnd temperature to 285ºC. If you did not do a PID tune, then approach this temperature slowly, exceeding 295ºC will permanently damage the thermistor.

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Based on E3D's documentation directly from their website, originally released under license CC BY 3.0: E3D-v6 Assembly by users Joshuarowley42, Sanjay, and Smogit: http://wiki.e3d-online.com/wiki/E3D-v6_A...

Some verbiage has been altered slightly and links and markup have been added for clarification.

2 Comments

"295ºC will permanently damage the thermistor"

but they (E3D) say that this noozle can handle 300°C (and that can also reach 400°C ...).

Maybe the whole extruder can but not the thermistor.

Any suggestion for a more robust thermistore to handle >300°C temps?

David Montenegro - Reply

That is correct. The thermistor can only safely go up to 295, but the rest of the hot end is capable of going much higher. If you want to print at higher temperatures, consider installing a thermocouple instead.

MatterHackers -

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