> For the complete documentation index, see [llms.txt](https://c-shengwen-tw.gitbook.io/ncrl-flight-controller/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://c-shengwen-tw.gitbook.io/ncrl-flight-controller/guide/assembly.md).

# Assembly

![](/files/-M6DG8ChaM2ynFl6weTQ)

### Flight control board

Currently, **AVICON EDU** flight control board is used

![](/files/-M6DG52qPS3VpyHTitP-)

![](/files/-M6DG6eo45p0rRXURVsd)

### [![](https://github.com/ncrl-flight-control-group/ncrl-flight-control/raw/master/master/documentation/imgs/fcu2.PNG)](https://github.com/ncrl-flight-control-group/ncrl-flight-control/blob/master/master/documentation/imgs/fcu2.PNG)XBee module

Since the input voltage range of XBee module is between 2.1 and 3.6V, a 5V to 3.3V step-down regulator is required.

![](/files/-M6DG9b9haoHLPNzYay_)

Incorrect connection or power voltage can easily damage the moudle.