> For the complete documentation index, see [llms.txt](https://guide.petoi.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.petoi.com/arduino-ide/serial-monitor.md).
# Serial Monitor
## Mainboard connection
For the mainboard connection to the computer, please refer to the subpage in the Skill Composer according to the different types of mainboards as below:
## Set up in the Arduino IDE
1. Select the port in the [Arduino IDE](https://www.arduino.cc/en/software)(recommended version **1.8.19**).
{% hint style="info" %}
If you can't determine which port is correct, unplug and re-plug the USB data cable on the computer side and check the difference in the ***Tools*** menu.
You may install the [drivers](https://guide.petoi.com/technical-support/useful-tools) if no new port is shown in the menu list.
{% endhint %}
2. Open the serial monitor.
You can choose the "Serial Monitor" in the ***Tools*** menu bar or click the  Button to open the serial monitor window:
 
3. Configure the parameters of the serial monitor.
In the serial monitor, set "***No line ending***" and the baud rate to ***115200***.
With the USB adapter / Bluetooth module connecting NyBoard and computer, you have the ultimate interface - **Serial Monitor** to communicate with NyBoard and change every byte on it(via sending the serial commands based on the [serial protocol](https://guide.petoi.com/apis/serial-protocol)).
---
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