<p>You can either flip the connector for the motor around (i.e. plug it in backwards) or (if you are using Marlin firmware) look for the following line in configuration.h:  (using the Arduino editor open the Marlin file For your 3D Printer,  one of the tabs is labelled "configuration.h" click on that tab to bring it to the front for editing.  use the Edit, Find and put E0 in the find box, click find.  When you find the line below</p>

<pre><code>#define INVERT_E0_DIR false
</code></pre>

<p>change <code>false</code> to <code>true</code> (or vice-versa). Note that if you go for the connector-flipping route, make sure that you only do this when the printer is turned off.</p>

CC BY-SA 3.0
2016-06-17T07:57:03.587Z
Flipping the connector can be described more precise, if your connector allows it: You can flip two leads of one(!) coil, flip the whole assembly, exchange the two coil leads (without flipping them). Whatever is easiest for you.
kamuro
CC BY-SA 3.0
2016-06-17T14:16:03.827Z
Also, make sure everything is POWERED OFF before you start messing with stepper motor wires.
creuzerm
CC BY-SA 4.0
2020-12-21T00:37:37.487Z
The setting it to `true` didn't work for me.
Austin Darga
CC BY-SA 4.0
2020-12-21T13:08:44.170Z
@AustinDarga You should probably turn that into a separate question. One simple thing you should at least test: what happens if you command the extruder to turn backwards? Does it reverse direction to turn "forwards"?
Tom van der Zanden
CC BY-SA 4.0
2020-12-21T18:04:53.870Z
@AustinDarga After changing the setting, you need to Flash the firmware and do a full seeding of the settings again.
Trish
CC BY-SA 3.0
2016-06-17T07:39:19.907Z
2017-12-10T19:04:20.963Z
2017-12-10T19:04:20.963Z
Tom van der Zanden
<p>Reverse the plug for the motor on the board. Or do firmware. Doesn't matter. *** assuming you have ramps and a standard stepper.. </p>

CC BY-SA 3.0
2016-06-17T12:08:46.063Z
2016-06-17T12:08:46.063Z
MakerModder
<p>I have a (HIC) version of the Prusa i3. I have recently installed the E3D v6 hotend and titan extruder. After fixing some other issues, I noticed that there is no filament being extruded. In addition, the gear looked like it was going in the wrong direction. How can I fix this?</p>

<prusa-i3><extruder><e3d-v6><e3d-titan>
Extruder is running backwards?
Chris Manning
# Extruder is running backwards?

(Asked by: username_0 on 2016-06-17)

I have a (HIC) version of the Prusa i3. I have recently installed the E3D v6 hotend and titan extruder. After fixing some other issues, I noticed that there is no filament being extruded. In addition, the gear looked like it was going in the wrong direction. How can I fix this?

**Tags:** prusa-i3, extruder, e3d-v6, e3d-titan


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## 2 answers

### Answer by username_1 on 2016-06-17. Score: 11

You can either flip the connector for the motor around (i.e. plug it in backwards) or (if you are using Marlin firmware) look for the following line in configuration.h: (using the Arduino editor open the Marlin file For your 3D Printer, one of the tabs is labelled "configuration.h" click on that tab to bring it to the front for editing. use the Edit, Find and put E0 in the find box, click find. When you find the line below

```
#define INVERT_E0_DIR false

```

change `false` to `true` (or vice-versa). Note that if you go for the connector-flipping route, make sure that you only do this when the printer is turned off.

> **Comments:**
> **username_2**: Flipping the connector can be described more precise, if your connector allows it: You can flip two leads of one(!) coil, flip the whole assembly, exchange the two coil leads (without flipping them). Whatever is easiest for you.  
> **username_3**: Also, make sure everything is POWERED OFF before you start messing with stepper motor wires.  
> **username_4**: The setting it to `true` didn't work for me.  
> **username_1**: @username_4 You should probably turn that into a separate question. One simple thing you should at least test: what happens if you command the extruder to turn backwards? Does it reverse direction to turn "forwards"?  
> **username_5**: @username_4 After changing the setting, you need to Flash the firmware and do a full seeding of the settings again.  

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### Answer by username_6 on 2016-06-17. Score: 0

Reverse the plug for the motor on the board. Or do firmware. Doesn't matter. \*\*\* assuming you have ramps and a standard stepper..


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