<p>Maybe it would it help if you fix <code>#default</code> to <code>#define</code> in the current line:</p>
<pre><code>set #default DEFAULT_ACCELERATION ...
</code></pre>

CC BY-SA 4.0
2021-04-27T20:32:54.423Z
2021-04-27T20:32:54.423Z
octopus8
<p>There are a few hits on my issue title but could not find an actual answer/advice.
I burned my Ender 3 Pro Creality motherboard and replaced it with an SKR 1.4 + TMC 2209 + BLTouch.
Everything is moving like it should and calibrated.</p>
<p>However, at the end of the homing process, the Z-axis goes up, then it's supposed to move to the printing position.
At that point, the acceleration is so great that the Z-axis barely goes down and I end up printing about 4 cm above the bed.</p>
<p>These are the settings I changed on my Marlin 2.0.7 firmware in relation to the Ender 3 setup:</p>
<pre><code>Configuration.h
set #define STRING_CONFIG_H_AUTHOR &quot;Nicolas Rietsch v 0.1.2&quot;
enable #define CUSTOM_MACHINE_NAME
set #define CUSTOM_MACHINE_NAME &quot;Ender-3 PRO&quot;
set #define TEMP_SENSOR_BED 1
set #define DEFAULT_MAX_FEEDRATE          { 500, 500, 5, 45 }
set #define DEFAULT_MAX_ACCELERATION      { 450, 450, 100, 10000 }
set #default DEFAULT_ACCELERATION          450
set #define DEFAULT_TRAVEL_ACCELERATION   500 

set #define INVERT_X_DIR true
set #define INVERT_E0_DIR true
set #define X_MIN_POS -26
set #define X_BED_SIZE 230
set #define Y_BED_SIZE 230
set #define Z_MAX_POS 250
enable #define NOZZLE_PARK_FEATURE
</code></pre>
<pre><code>Configuration_adv.h
set #define X_CURRENT       500
set #define Y_CURRENT       500
set #define Z_CURRENT       500
set #define E0_CURRENT      650
set #define CHOPPER_TIMING CHOPPER_DEFAULT_24V
</code></pre>
<p>What am I missing?</p>

CC BY-SA 4.0
2021-04-28T17:05:29.087Z
DEFAULT_MAX_ACCELERATION... what is your current value for Z in EEPROM? Have you checked acceleration settings using LCD or g-code? Or reset to defaults?
octopus8
<marlin><creality-ender-3>
First move after homing way too fast
Nick
# First move after homing way too fast

(Asked by: username_0 on 2021-04-25)

There are a few hits on my issue title but could not find an actual answer/advice.
I burned my Ender 3 Pro Creality motherboard and replaced it with an SKR 1.4 + TMC 2209 + BLTouch.
Everything is moving like it should and calibrated.
However, at the end of the homing process, the Z-axis goes up, then it's supposed to move to the printing position.
At that point, the acceleration is so great that the Z-axis barely goes down and I end up printing about 4 cm above the bed.
These are the settings I changed on my Marlin 2.0.7 firmware in relation to the Ender 3 setup:
Configuration.h
set #define STRING_CONFIG_H_AUTHOR "Nicolas Rietsch v 0.1.2"
enable #define CUSTOM_MACHINE_NAME
set #define CUSTOM_MACHINE_NAME "Ender-3 PRO"
set #define TEMP_SENSOR_BED 1
set #define DEFAULT_MAX_FEEDRATE          { 500, 500, 5, 45 }
set #define DEFAULT_MAX_ACCELERATION      { 450, 450, 100, 10000 }
set #default DEFAULT_ACCELERATION          450
set #define DEFAULT_TRAVEL_ACCELERATION   500 

set #define INVERT_X_DIR true
set #define INVERT_E0_DIR true
set #define X_MIN_POS -26
set #define X_BED_SIZE 230
set #define Y_BED_SIZE 230
set #define Z_MAX_POS 250
enable #define NOZZLE_PARK_FEATURE

Configuration_adv.h
set #define X_CURRENT       500
set #define Y_CURRENT       500
set #define Z_CURRENT       500
set #define E0_CURRENT      650
set #define CHOPPER_TIMING CHOPPER_DEFAULT_24V

What am I missing?

**Tags:** marlin, creality-ender-3
> **Comments:**
> **username_1**: DEFAULT_MAX_ACCELERATION... what is your current value for Z in EEPROM? Have you checked acceleration settings using LCD or g-code? Or reset to defaults?  

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## 1 answers

### Answer by username_1 on 2021-04-27. Score: 0 | Accepted answer

Maybe it would it help if you fix #default to #define in the current line:
set #default DEFAULT_ACCELERATION ...


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