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    • First things first: you're going to need a copy of Repetier.

    • If you are upgrading an existing 3D printer to use a V6 HotEnd, you should try to get a copy of your current firmware from your printer's manufacturer.

    • If you're building a new printer, or simply want to upgrade to the latest version of Repetier, download it at https://www.repetier.com/download-now/

    • If you download a fresh version of Repetier you'll have to configure more settings than the ones mentioned in this guide so that it will work well with your printer.

  1. Almost all printers use Arduino IDE to upload fresh firmware, so download it at https://www.arduino.cc/en/Main/Software
    • Unzip Repetier from the zip file you downloaded and put the resulting folder anywhere on your computer for safe keeping.

    • Inside this folder, navigate to the Repetiersub-folder, and open the Repetier.ino file. This should open every file of your firmware.

    • Find the Configuration.h file

    • Rather than manually editing the configuration file, you can also upload it to the online configurator.

  2. Manual Editing: In the Configuration.h file, the third un-commented line defines the number of extruders (HotEnds) your printer has. Update this line to: #define NUM_EXTRUDER 2.
    • Manual Editing:

    • In the Configuration.h file, the third un-commented line defines the number of extruders (HotEnds) your printer has. Update this line to: #define NUM_EXTRUDER 2.

    • Online Editor:

    • In the Tools Tab scroll down to the Extruder Section. Click Add Extruder to add a second HotEnd to your firmware configuration.

  3. Manual Editing: In the configuration.h file, find the highlighted line and update it to: #define EXT0_TEMPSENSOR_TYPE 8.
    • Manual Editing:

    • In the configuration.h file, find the highlighted line and update it to: #define EXT0_TEMPSENSOR_TYPE 8.

    • You also need to change the temperature sensor type for the second HotEnd in the Chimera. If your configuration file has the line #define EXT1_TEMPSENSOR_TYPE, then change that value to 8 as well. If not, you should upload your configuration.h file to the online configuration tool and start from the beginning of this guide.

    • Online Tool:

    • In the Extruder Section, select ATC Semitec 104-GT2 from the list of temperature sensors. Do this for both of your extruders.

  4. Manual editing: Change: #define MIN_DEFECT_TEMPERATURE 5 To detect a detached thermistor
    • Manual editing:

    • Change: #define MIN_DEFECT_TEMPERATURE 5 To detect a detached thermistor

    • Change: #define MAXTEMP 285 To prevents your hotend from overheating.

    • Change: #define MAX_DEFECT_TEMPERATURE 290 To shut off your printer if overheated.

    • Online Editing:

    • Change: Maximum extruder temperature 285 to prevent your HotEnd from overheating.

    • Change: Minimum defect temperature 5 To detect if thermistor is detached.

    • Change: Maximum defect temperature 290 To shut off your printer if overheated.

    • Upload the new firmware to your electronics as you normally would. Typically this means plugging in your printer to your computer, selecting the correct COM port and board type, and pressing the upload button.

    • If you're unsure of how to update your printer's firmware, check with its manufacturer.

Conclusion

Head back to the Chimera Assembly page to finish the last few steps before you start printing.

Gabe S.

Member since: 08/08/2017

13,677 Reputation

41 Guides authored

4 Comments

Unfortunately, even after following this guide, my hotends only hit ~200 before slowing down how quickly they are heating, before peaking out at about 210. It sits at 210 for a while, then throws the thermistor decouple error.

Any ideas on what the problem could be? Not sure what it could be, but it might be firmware. My hotend leads give off a solid 12v.

The printer is a DaVinci duo, if that matters.

Mason Cudlitz - Reply

Hi there! Sorry you’re having trouble. It sounds like you might have forgotten to run a PID auto-tune on your new hotend. You can find the instructions on that here. The decouple error is typically a fail-safe that happens when your printer isn’t sure why your HotEnd isn’t reaching/maintaining temperature. If you’re not able to get up to your expected temperature, that’s usually a PID issue. If your heater simply cuts out during printing and the temperature starts to drop, that’s likely a physical issue with your wires instead. Hope that helps! If you still need more assistance, you can probably get faster help by emailing the support team at support@e3d-online.com. Good luck!

Gabe S. -

Gabe,

Yep, that's what it was! I figured this out a short bit ago but just checked to see if you commented now; thanks for the help! That really caught me up for a bit.

My printer is now functioning well, although I am still having some trouble. Where in the firmware do I calibrate the extruder’s offset from one another? Thanks a ton for your time!

Mason Cudlitz -

Hi again. If you use the Repetier configurator and upload your configuration file, you’ll be able to edit the offsets in the Tools section, under the Extruder definitions.

Gabe S. -

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