[SOLVED] how to implement second heater? Hey there, I've got a FLsun Cube and got it with a single extruder but I want to implement a second extruder. The printer uses the MKS GEN_L V1.0 Board which actually has two heater ports but uses the RAMPS 14 configuration. I normally like modifying my Marlin FW but I only adjust values and do not change the code itself untill now... So my question is the following: [ATTACHEMENTS IN DROPBOX LINK AT THE END OF THE POST] Does anyone know how the second extruder (more specifically the second heater) is implemented in the attached Marlin 1.1.4-cube-chimera (I attached my Version as well: "DualCore Marlin-1.1.5")? I see that it runs the RAMPS_14_EFB mode, but where is the HEATER_1_PIN defined then? I wanted to do as less changes as possible concerning the original code file but in order to get it work (and leave the FW usable for other settings) I had to do the following: configuration.h (besides adjusting the values for a second extruder): -change "#define MOTHERBOARD BOARD_RAMPS_14_EFB" to "#define MOTHERBOARD BOARD_RAMPS_14_EFBE" pins.h: -add lines "#elif MB(RAMPS_14_EFBF || RAMPS_14_EFBE) #include "pins_RAMPS.h" which avoids to set a mode for the ramps board (as "#define IS_RAMPS_EFB" would do) pins_RAMPS.h: -disable the "Augumentation for auto-assigning RAMPS plugs" section in order to leave the ramps mode unspecified -set the MOSFET_D_PIN (from-1) to 7 which is the actual port for heater 1 (which then will be assigned to HEATER_1_PIN a few lines below in "[...] #else #define HEATER_1_PIN MOSFET_D_PIN") Compiling was successfull so far and I think my way could also work but I would like to know how it is done in the firmware supplied with the original dual extruder setup. FILES: [www.dropbox.com] https://reprap.org/forum/read.php?415,789440,789440#msg-789440 Tue, 21 Jul 2026 02:47:58 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?415,789440,789495#msg-789495 Re: [SOLVED] how to implement second heater? https://reprap.org/forum/read.php?415,789440,789495#msg-789495
Quote

I also noticed that the way it is done in the original firmware is not as smart as my way

Hmmmm.... I guess we will wait for your perfect implementation that gives us enlightenment.]]> Roxy Firmware - Marlin Sun, 24 Sep 2017 01:02:12 -0400 https://reprap.org/forum/read.php?415,789440,789447#msg-789447 Re: how to implement second heater? https://reprap.org/forum/read.php?415,789440,789447#msg-789447
I also noticed that the way it is done in the original firmware is not as smart as my way (by simply adding #define HEATER1_PIN 7 into the EFB configuration section)
And I noticed that basically all you have to do to apply the settings as it is meant to be done is:
- change motherboard type to "BAM_DICE" which includes the pins_ramps.h without setting a mode
- setting the MOSFET_D_PIN to the value 7]]> Schild0r Firmware - Marlin Sat, 23 Sep 2017 14:40:52 -0400 https://reprap.org/forum/read.php?415,789440,789440#msg-789440 [SOLVED] how to implement second heater? https://reprap.org/forum/read.php?415,789440,789440#msg-789440 I've got a FLsun Cube and got it with a single extruder but I want to implement a second extruder. The printer uses the MKS GEN_L V1.0 Board which actually has two heater ports but uses the RAMPS 14 configuration.
I normally like modifying my Marlin FW but I only adjust values and do not change the code itself untill now... So my question is the following:
[ATTACHEMENTS IN DROPBOX LINK AT THE END OF THE POST]

Does anyone know how the second extruder (more specifically the second heater) is implemented in the attached Marlin 1.1.4-cube-chimera (I attached my Version as well: "DualCore Marlin-1.1.5")? I see that it runs the RAMPS_14_EFB mode, but where is the HEATER_1_PIN defined then?
I wanted to do as less changes as possible concerning the original code file but in order to get it work (and leave the FW usable for other settings) I had to do the following:

configuration.h (besides adjusting the values for a second extruder):
-change "#define MOTHERBOARD BOARD_RAMPS_14_EFB"
to "#define MOTHERBOARD BOARD_RAMPS_14_EFBE"

pins.h:
-add lines "#elif MB(RAMPS_14_EFBF || RAMPS_14_EFBE)
#include "pins_RAMPS.h"
which avoids to set a mode for the ramps board (as "#define IS_RAMPS_EFB" would do)

pins_RAMPS.h:
-disable the "Augumentation for auto-assigning RAMPS plugs" section in order to leave the ramps mode unspecified
-set the MOSFET_D_PIN (from-1) to 7 which is the actual port for heater 1 (which then will be assigned to HEATER_1_PIN a few lines below in "[...] #else #define HEATER_1_PIN MOSFET_D_PIN")

Compiling was successfull so far and I think my way could also work but I would like to know how it is done in the firmware supplied with the original dual extruder setup.

FILES: [www.dropbox.com]]]> Schild0r Firmware - Marlin Sat, 23 Sep 2017 14:18:10 -0400