<p>The MKS Base v1.2 is basically an Arduino MEGA2560 and a RAMPS1.4 on a single board.</p>
<p>You can use the RAMPS pin designation.</p>
<p>Note that the endstop to origin distances is explained in question <a href="https://3dprinting.stackexchange.com/questions/6375/how-to-center-my-prints-on-the-build-platform-re-calibrate-homing-offset">How to center my prints on the build platform? (Re-calibrate homing offset)</a>.</p>
<p>In Jims Marlin fork you can find this at:</p>
<pre><code>#define X_MIN_POS 0 - XTRA_BED_LEFT
</code></pre>
<p>and</p>
<pre><code>#define Y_MIN_POS 0 - XTRA_BED_BACK
</code></pre>
<p>Unfortunately, <code>XTRA_BED_LEFT</code> and <code>XTRA_BED_BACK</code> are defined as zero; this implies that the endstops define the origin (not likely) or it is left as an excercise for you to find out. <a href="https://3dprinting.stackexchange.com/questions/6375/how-to-center-my-prints-on-the-build-platform-re-calibrate-homing-offset/6376#6376">This answer</a> explains how you figure that out.</p>

CC BY-SA 4.0
2020-12-29T16:45:27.700Z
Thank you for the answer. For the RAMPS 1.4 the boards.c file also has multiple configurations.
The board itself has 3 blue power outputs E0, E1, Fan followed by a green power output for the bed.

#define BOARD_RAMPS_14_EFB 43  // RAMPS 1.4 (Power outputs: Hotend, Fan, Bed)
#define BOARD_RAMPS_14_EEB 44 // RAMPS 1.4 (Power outputs: Hotend0, Hotend1, Bed)
#define BOARD_RAMPS_14_EFF 45 // RAMPS 1.4 (Power outputs: Hotend, Fan0, Fan1)
#define BOARD_RAMPS_14_EEF 46 // RAMPS 1.4 (Power outputs: Hotend0, Hotend1, Fan)
#define BOARD_RAMPS_14_SF 48  // RAMPS 1.4 (Power outputs: Spindle, Fan
Eike
CC BY-SA 4.0
2020-12-30T02:13:11.367Z
@Eike Looks like you have the EFBE option.
0scar
CC BY-SA 4.0
2020-12-30T10:07:32.487Z
Just greped through the source files for the Easyconfig 1.1 and 2.0 and found only references in some pins_RAMPS files to the EFBE option:

./Marlin/pins_RAMPS.h:  #else    // Non-specific are "EFB" (i.e., "EFBF" or "EFBE") 

sorry for being blind but I am stil not sure what board I should put into the config?
Eike
CC BY-SA 4.0
2020-12-30T13:02:39.740Z
@Eike EFB is a standard option, the EFBE is an added extra extruder (I understood you had 2 from your comment, but if you are only using 1, you can go for EFB).
0scar
CC BY-SA 4.0
2020-12-29T15:51:46.150Z
2020-12-30T11:10:21.730Z
2020-12-30T11:10:21.730Z
0scar
<p>I am trying to correct the x&amp;y offsets in the Tevo Tarantula that I got from a friend in order that my printer is not printing over the end.
What I got so far is that I need to measure and then enter the offsets into my configuration.h file, build the firmware and flash it to the board.</p>
<p>Because I do not have and can not find the original firmware I found the repository from <a href="https://github.com/JimBrown/MarlinTarantula" rel="nofollow noreferrer">Jim Brown</a> for the Tarantula.</p>
<p>Looking into the top section of the config file provided by the repo, the board configured is</p>
<pre><code>#define MOTHERBOARD BOARD_MKS_GEN_13        // Original controller board with built in stepper drivers. Works with MKS BASE 1.3, 1.4
</code></pre>
<p>However since the board in my Tarantula has 1.2 on it I checked the boards.h file for MKS but could not find the v1.2 :</p>
<pre><code>#define BOARD_MKS_BASE          40    // MKS BASE v1.0
#define BOARD_MKS_BASE_15       405   // MKS v1.5 with Allegro A4982 stepper drivers
#define BOARD_MKS_BASE_HEROIC   41    // MKS BASE 1.0 with Heroic HR4982 stepper drivers
#define BOARD_MKS_GEN_13        47    // MKS GEN v1.3 or 1.4
#define BOARD_MKS_GEN_L         53    // MKS GEN L
#define BOARD_MKS_GEN_L_V2      54    // MKS GEN L V2
#define BOARD_ZRIB_V20          504   // zrib V2.0 control b
</code></pre>
<p>Any idea, what board configuration would be compatible for 1.2? Or is there any other way to correct the x&amp;y offsets other then compiling them into the firmware?</p>

<marlin><firmware><tevo-tarantula><print-axis-offset>
What is the correct Marlin firmware setting for Tevo Tarantula with MKS Base V1.2 board
Eike
# What is the correct Marlin firmware setting for Tevo Tarantula with MKS Base V1.2 board

(Asked by: username_0 on 2020-12-29)

I am trying to correct the x&y offsets in the Tevo Tarantula that I got from a friend in order that my printer is not printing over the end.
What I got so far is that I need to measure and then enter the offsets into my configuration.h file, build the firmware and flash it to the board.
Because I do not have and can not find the original firmware I found the repository from Jim Brown for the Tarantula.
Looking into the top section of the config file provided by the repo, the board configured is
#define MOTHERBOARD BOARD_MKS_GEN_13        // Original controller board with built in stepper drivers. Works with MKS BASE 1.3, 1.4

However since the board in my Tarantula has 1.2 on it I checked the boards.h file for MKS but could not find the v1.2 :
#define BOARD_MKS_BASE          40    // MKS BASE v1.0
#define BOARD_MKS_BASE_15       405   // MKS v1.5 with Allegro A4982 stepper drivers
#define BOARD_MKS_BASE_HEROIC   41    // MKS BASE 1.0 with Heroic HR4982 stepper drivers
#define BOARD_MKS_GEN_13        47    // MKS GEN v1.3 or 1.4
#define BOARD_MKS_GEN_L         53    // MKS GEN L
#define BOARD_MKS_GEN_L_V2      54    // MKS GEN L V2
#define BOARD_ZRIB_V20          504   // zrib V2.0 control b

Any idea, what board configuration would be compatible for 1.2? Or is there any other way to correct the x&y offsets other then compiling them into the firmware?

**Tags:** marlin, firmware, tevo-tarantula, print-axis-offset

---

## 1 answers

### Answer by username_1 on 2020-12-29. Score: 1 | Accepted answer

The MKS Base v1.2 is basically an Arduino MEGA2560 and a RAMPS1.4 on a single board.
You can use the RAMPS pin designation.
Note that the endstop to origin distances is explained in question How to center my prints on the build platform? (Re-calibrate homing offset).
In Jims Marlin fork you can find this at:
#define X_MIN_POS 0 - XTRA_BED_LEFT

and
#define Y_MIN_POS 0 - XTRA_BED_BACK

Unfortunately, XTRA_BED_LEFT and XTRA_BED_BACK are defined as zero; this implies that the endstops define the origin (not likely) or it is left as an excercise for you to find out. This answer explains how you figure that out.

> **Comments:**
> **username_0**: Thank you for the answer. For the RAMPS 1.4 the boards.c file also has multiple configurations. The board itself has 3 blue power outputs E0, E1, Fan followed by a green power output for the bed.  #define BOARD_RAMPS_14_EFB 43  // RAMPS 1.4 (Power outputs: Hotend, Fan, Bed) #define BOARD_RAMPS_14_EEB 44 // RAMPS 1.4 (Power outputs: Hotend0, Hotend1, Bed) #define BOARD_RAMPS_14_EFF 45 // RAMPS 1.4 (Power outputs: Hotend, Fan0, Fan1) #define BOARD_RAMPS_14_EEF 46 // RAMPS 1.4 (Power outputs: Hotend0, Hotend1, Fan) #define BOARD_RAMPS_14_SF 48  // RAMPS 1.4 (Power outputs: Spindle, Fan  
> **username_1**: @Eike Looks like you have the EFBE option.  
> **username_0**: Just greped through the source files for the Easyconfig 1.1 and 2.0 and found only references in some pins_RAMPS files to the EFBE option:  ./Marlin/pins_RAMPS.h:  #else    // Non-specific are "EFB" (i.e., "EFBF" or "EFBE")   sorry for being blind but I am stil not sure what board I should put into the config?  
> **username_1**: @Eike EFB is a standard option, the EFBE is an added extra extruder (I understood you had 2 from your comment, but if you are only using 1, you can go for EFB).  

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