> For the complete documentation index, see [llms.txt](https://aerogcs-orange-docs.aeromegh.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aerogcs-orange-docs.aeromegh.com/8.-connecting-a-drone/8.1-utilizing-serial-port.md).

# 8.1 Utilizing Serial Port

Follow these steps to establish a connection with the drone using the serial port.

**Step 1**: Choose the "**Serial**" option from the dropdown list, as shown below, and proceed to configure the parameters.

<figure><img src="/files/Y0MUJNZt2fNGdqvFiHrM" alt=""><figcaption><p>Serial Port Connect</p></figcaption></figure>

Configure or choose the appropriate values as explained below.

**Serial Port Settings:**

Within the serial port settings, users can establish a device connection through serial communication. Moreover, users hold the flexibility to adjust baud rates based on specific requirements before initiating the device connection.

#### 8.1.1        Serial Port Selection:

Choose a serial port from the provided drop-down list. Opting for the correct serial port is essential to ensure the establishment of a reliable communication link.

#### 8.1.2        Baud Rate:

The baud rate corresponds to the pace at which information moves within a communication channel. It signifies the frequency of signal element alterations or transitions per second as data traverses through a transmission medium. A higher baud rate translates to accelerated data transmission and reception speeds.&#x20;

**Baud rate = Number of signal elements/total time (in seconds)**&#x20;

Baud rate holds significance, particularly in serial communication. Within the context of a serial port, the term "9600 baud" indicates that the serial port can facilitate the transfer of up to 9600 bits within a single second.

#### 8.1.3        Data Bits:

Data bits in serial communication carry a range of information, including device commands, sensor readings, and error messages. Both text (ASCII) and binary data can serve as carriers. Commonly, serial ports employ five to eight data bits.&#x20;

#### 8.1.4        Parity:

Parity, an error-checking method, enforces a consistent count of 1s – either even or odd – within each error-free bit group transmitted.&#x20;

#### 8.1.5        Data Flow Control:

\-       **RTS/CTS Protocol:** The Request To Send (RTS) / Clear To Send (CTS) protocol employs a single wire in each direction, facilitating a handshaking technique.

\-        **XON/XOFF Flow Control**: XON/XOFF, also referred to as Software Flow Control, are control characters integral to data transmission.

**Step 2**: To establish a connection with the drone, click on the "**Connect**" button.

After a successful connection, you will receive a notification confirming "**Communication Link Established,**" and the top bar of the screen will change to a vibrant green color.