<p>For the 1.1.x (1.1.9) bugfix firmware version, the multiple probing is defined in the <a href="https://github.com/MarlinFirmware/Marlin/blob/bugfix-1.1.x/Marlin/Configuration.h#L795" rel="nofollow noreferrer">configuration.h file</a>.</p>
<pre><code>// The number of probes to perform at each point.
//   Set to 2 for a fast/slow probe, using the second probe result.
//   Set to 3 or more for slow probes, averaging the results.
//#define MULTIPLE_PROBING 2
</code></pre>
<p>You should change the configuration to include the multiple probing by uncommenting the line:</p>
<pre><code>#define MULTIPLE_PROBING 2
</code></pre>
<hr />
<p><em>Note that there is question: &quot;<a href="https://3dprinting.stackexchange.com/questions/12153/updating-marlin-firmware-step-by-step-guide">Updating Marlin Firmware - Step by Step Guide</a>&quot; that shows how you should modify the sources.</em></p>
<p><em>How to compile and upload/install the compiled binary on your printer controller board depends on the controller board version and type.</em></p>

CC BY-SA 4.0
2021-01-25T13:20:09.033Z
2021-01-25T14:01:58.260Z
2021-01-25T14:01:58.260Z
0scar
<p>I am using an Ender 3 (v1.1.4) with Marlin 1.1.X bugfix installed. Also BLTouch v3.1 is used. The probe is deployed once only while mesh bed leveling.</p>
<p>How can I make the probe deploy twice at every point? Where am I supposed to change the code for it?</p>
<p>Please explain in detail if possible as I am not familiar with the coding part?</p>

<creality-ender-3><bed-leveling><bltouch>
How to probe twice while mesh bed leveling with a BLTouch setup?
boom_shiva
# How to probe twice while mesh bed leveling with a BLTouch setup?

(Asked by: username_0 on 2021-01-25)

I am using an Ender 3 (v1.1.4) with Marlin 1.1.X bugfix installed. Also BLTouch v3.1 is used. The probe is deployed once only while mesh bed leveling.

How can I make the probe deploy twice at every point? Where am I supposed to change the code for it?

Please explain in detail if possible as I am not familiar with the coding part?

**Tags:** creality-ender-3, bed-leveling, bltouch


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## 1 answers

### Answer by username_1 on 2021-01-25. Score: 1

For the 1.1.x (1.1.9) bugfix firmware version, the multiple probing is defined in the [configuration.h file](https://github.com/MarlinFirmware/Marlin/blob/bugfix-1.1.x/Marlin/Configuration.h#L795).

```
// The number of probes to perform at each point.
//   Set to 2 for a fast/slow probe, using the second probe result.
//   Set to 3 or more for slow probes, averaging the results.
//#define MULTIPLE_PROBING 2

```

You should change the configuration to include the multiple probing by uncommenting the line:

```
#define MULTIPLE_PROBING 2

```

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*Note that there is question: "[Updating Marlin Firmware - Step by Step Guide](https://3dprinting.stackexchange.com/questions/12153/updating-marlin-firmware-step-by-step-guide)" that shows how you should modify the sources.*

*How to compile and upload/install the compiled binary on your printer controller board depends on the controller board version and type.*


---

