# Baseboard Changelog

## Pixhawk Baseboard v1 to v2 

{% hint style="info" %}
The Pixhawk Baseboard v1 has been replaced by the v2A & v2B, with the following updates
{% endhint %}

*  **Smaller and More Compact Design:** The overall footprint of the board has been reduced, making it easier to integrate into various applications.
* **New Robust Pin Header Design**: Improved reliability with a improved pin header housing.
* **Added PWM Level Shifter**: Allows PWM output signal levels to be switched from 3.3V to 5V via a resistor or solder bridge.
* **Change to Aluminum CNC Case:** High-quality aluminum CNC outer case offers durability, efficient heat dissipation, corrosion resistance, aesthetic appeal, and EMI shielding.
* **Two Models Available:** Model A and Model B, each with the pin header facing different directions for more flexibility in installation.
* **Relocated of Ports**: UART4 & I2C, SPI, AD & IO, DSM RC, and JST USB ports have been moved from the top to the side of the board. AUX7, AUX8, and SBUS\_OUT/RSSI\_IN move to the side in a JST-GH Port.

Refer to these ports pinout page for more detail:

{% content-ref url="/pages/aDWVej3IIqboZMZCg60P" %}
[Pixhawk Baseboard v1 Ports](/autopilot/pixhawk-baseboards/pixhawk-baseboard-v1-ports.md)
{% endcontent-ref %}

{% content-ref url="/pages/jECVixIA7ZkitE9vKSvB" %}
[Pixhawk Baseboard v2 Ports](/autopilot/pixhawk-baseboards/pixhawk-baseboard-v2-ports.md)
{% endcontent-ref %}

#### Dimension Comparison:

<figure><img src="/files/D4b6Ep6hRvLH4AUiqavh" alt=""><figcaption></figcaption></figure>


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