# PWM Signal Voltage MOD

The newest batch of Pixhawk baseboard V2 now supports switchable PWM signal voltage (3.3V or 5V). The modification requires the user to open the casing of the Pixhawk flight controller and be familiar with soldering.

{% hint style="warning" %}
Any damages caused during the modification are not covered by warranty
{% endhint %}

## For V2A RC12 & V2B RC02

To switch the PWM signal voltage, bridge the 3v3 or 5v soldering pads on the PCB by applying solder on the pads. Make sure the unused pads are cleaned and not shorted.

Pixhawk baseboard V2-A and V2-B have slightly different PCB designs. Follow the red square in the diagram below to locate the PWM voltage select soldering pad.

<figure><img src="/files/2OwI8DqmADrZbiuXxc39" alt=""><figcaption><p>Pixhawk Baseboard V2-A</p></figcaption></figure>

<figure><img src="/files/74Sw7CaJrRKuTUBawZES" alt=""><figcaption><p>Pixhawk Baseboard V2-B</p></figcaption></figure>

## For V2A RC13 & V2B RC03

A newer design that provides a more stable voltage signal and easier modding process is currently available.

Find the JP1 on the PCB (default with no resistor soldered at the location), leave the spot empty for 3.3V signal voltage, and short the two soldering pads for 5V.

<figure><img src="/files/F5hoKXVnu9cuJgr1nUqs" alt=""><figcaption><p>V2A RC13</p></figcaption></figure>

<figure><img src="/files/pdGFGt8IyfsCL0hu85CJ" alt=""><figcaption><p>V2B RC03</p></figcaption></figure>


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