> For the complete documentation index, see [llms.txt](https://nxp.gitbook.io/hovergames/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nxp.gitbook.io/hovergames/rddrone-fmuk66/connectors/can-transceivers.md).

# CAN transceivers

The RDDRONE-FMUK66 features two [CAN (Controller Area Network) busses](https://en.wikipedia.org/wiki/CAN_bus). PX4 implements the [UAVCAN protocol](https://en.wikipedia.org/wiki/UAVCAN), and supports some motor controllers, sensors and GPS solutions with a CAN interface. The current HoverGames kit does not include any hardware with a CAN interface, except the FMU itself.

{% embed url="<https://dev.px4.io/en/uavcan/>" %}

## Connector pinout

| Pin | Signal | Voltage |
| --- | ------ | ------- |
| 1   | VCC    | +5.0V   |
| 2   | CAN H  | +3.3V   |
| 3   | CAN L  | +3.3V   |
| 4   | GND    | GND     |

## RDDRONE-FMUK66 Rev. C schematics

![](/files/-LVsE9nyq2eJ35Wm1hh3)

![](/files/-LVsEBbNV5l01XMu0flc)

## RDDRONE-FMUK66 Rev. B schematic

{% hint style="danger" %}
Rev. B (and older boards) are **not supported** anymore. This information is left for reference.
{% endhint %}

![](/files/-LOruD3SJYTMdyijsWVp)