# Spectrum SPM9545 binding

Source: https://forum.modalai.com/topic/3987/spectrum-spm9545-binding
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: px4-dev-kit
Posted: 2024-12-02 11:37:44 UTC by jeycj
Replies: 2 · Views: 1264

## jeycj · 2024-12-02 11:37:44 UTC

I recently purchased the PX4 Autonomy Developer Kit item from your company. As I already own an Spektrum DX6 RC controller and a SPM9645, I opted for the version without the remote control. Following the instructions provided in the link https://docs.modalai.com/voxl2-rc-configs/#spektrum-dsmx , I removed the pre-installed receiver and connected my own. I then proceeded with the remaining steps exactly as outlined.
When I power on the device, I can see the receiver's LED is powered and connected to my RC. However, the QGC is not recognizing it, I tried to restart QGC and didn't work. To ensure I followed the process correctly, I tested the same setup with my Pixhawk, and it worked as expected.

## Reply by Eric Katzfey (ModalAI staff) · 2024-12-02 15:54:14 UTC

@jeycj Take a look at the file `/etc/modalai/voxl-px4.conf` What is the RC value set to? It should be SPEKTRUM for your configuration

## Reply by jeycj · 2024-12-02 18:22:45 UTC (in reply to Eric Katzfey)

@Eric-Katzfey Worked! Thanks a lot