> 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/mobile-app/introduction/connect-to-nyboard.md).

# Connect to NyBoard

{% hint style="warning" %}
Make sure you have uploaded the OpenCat [**Main function**](https://guide.petoi.com/desktop-app/firmware-uploader/nyboard#upgrade-the-firmware-process-for-nyboard) firmware before calibrating.
{% endhint %}

You need to plug the [Bluetooth dongle](https://guide.petoi.com/communication-modules/dual-mode-bluetooth) into the 6-pin socket on the **NyBoard**. Pay attention to the Bluetooth dongle's pin order. Long-press the button on the battery to turn on the robot's power. 

{% hint style="warning" %}
If the buzzer beeps repetitively after bootup or during use, the battery is low. Please charge it in time. The charging port is on one end of the battery. 
{% endhint %}

![](/files/-MjZV96lacYVzliIG6xN)

The LED on the Bluetooth dongle should blink, waiting for a connection. 

If Bluetooth is connected, the LED will light steadily. 


---

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