# Pinout

<figure><img src="https://content.gitbook.com/content/XIotdBAWvpuNDEnWR5oX/blobs/TUqeTswn59pt1LYVLMZH/2.png" alt=""><figcaption></figcaption></figure>

### UART / I2C Port

The module uses a 6-pin and 4-pin  JST-GH connector following the Pixhawk standard.

<table data-header-hidden><thead><tr><th width="83.02734375" valign="top"></th><th valign="top"></th><th valign="top"></th><th valign="top"></th></tr></thead><tbody><tr><td valign="top">Pin</td><td valign="top">Name</td><td valign="top">Direction</td><td valign="top">Description</td></tr><tr><td valign="top">1</td><td valign="top">5V</td><td valign="top">Input</td><td valign="top">Power input (regulated 5V)</td></tr><tr><td valign="top">2</td><td valign="top">RX</td><td valign="top">Input</td><td valign="top">UART RX (to GNSS module)</td></tr><tr><td valign="top">3</td><td valign="top">TX</td><td valign="top">Output</td><td valign="top">UART TX (from GNSS module)</td></tr><tr><td valign="top">4</td><td valign="top">SCL</td><td valign="top">Output</td><td valign="top">I²C Clock for BMM350 (3.3V logic)</td></tr><tr><td valign="top">5</td><td valign="top">SDA</td><td valign="top">Bidirectional</td><td valign="top">I²C Data for BMM350 (3.3V logic)</td></tr><tr><td valign="top">6</td><td valign="top">GND</td><td valign="top">—</td><td valign="top">Ground</td></tr></tbody></table>

### USB-TTL Port

<table data-header-hidden><thead><tr><th valign="top"></th><th valign="top"></th><th valign="top"></th><th valign="top"></th></tr></thead><tbody><tr><td valign="top">Pin</td><td valign="top">Name</td><td valign="top">Direction</td><td valign="top">Description</td></tr><tr><td valign="top">1</td><td valign="top">5V</td><td valign="top">Input</td><td valign="top">Power input (regulated 5V)</td></tr><tr><td valign="top">2</td><td valign="top">RX</td><td valign="top">Input</td><td valign="top">UART RX (to GNSS module)</td></tr><tr><td valign="top">3</td><td valign="top">TX</td><td valign="top">Output</td><td valign="top">UART TX (from GNSS module)</td></tr><tr><td valign="top">4</td><td valign="top">GND</td><td valign="top">-</td><td valign="top">Ground</td></tr></tbody></table>

{% hint style="info" %}
Please remove the UART/I2C connected device before plugging in the USB-TTL device. One device shall be connected at a given time.
{% endhint %}
