# Klipper Expander

{% hint style="info" %}
Please note that this document is sourced from the following link:\
<https://github.com/VoronDesign/Voron-Hardware/tree/master/Klipper_Expander/Documentation>
{% endhint %}

## STM32-Klipper-Expande

<figure><img src="https://3855363247-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fcs6QyzgclSdyKWWV05Sb%2Fuploads%2Fj0oMWVZ9qXo4l24DSy0I%2Fimage.png?alt=media&#x26;token=bbb558d5-ad87-4fc4-b752-71b0792b16cd" alt=""><figcaption></figcaption></figure>

Simple MCU board for use with Klipper 3D Printer firmware with:

* STM32F042F6P6 MCU with internal oscilator
* SWD (Serial Wire Debug) header for easy debugging
* 4 3A Mosfet outputs
* 2 Thermistor inputs
* 1 Level Shifted Neopixel output
* 1 GPIO header
* I2C Header with Pullup Resistors