# TX16S Binding Problems

Source: https://forum.modalai.com/topic/2060/tx16s-binding-problems
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: sentinel
Posted: 2023-04-11 17:12:36 UTC by madswamp
Replies: 3 · Views: 5822

## madswamp · 2023-04-11 17:12:36 UTC

Hello, I'm trying to bind my Radiomaster TX16S remote controller to the Sentinel drone.
After following the quickstart guide instructions, I'm able to put the SPEKTRUM receiver in binding mode via SSH (LED starts blinking), bind the TX16S to the receiver (LED stays on continuously). After this procedure I power cycled the Drone, and it appears that the receiver is still binded with the controller. 

However, opening QGC there is no RC controller connected and when I try to calibrate the controller, the following error appears : 
"Detected 0 radio channels. To operate PX4 you need at least 5 channels".

I used the following configuration in the remote controller
"DSM Auto".

After binding it changed to 
"DSM X 1F".

Is there any problem with this setup?

Thank you.

## Reply by Chad Sweet (ModalAI staff) · 2023-04-11 17:15:05 UTC

@madswamp said in [TX16S Binding Problems](/post/9576):
> Radiomaster TX16S

Have you asked RadioMaster if they are compatible with Spektrum?

## Reply by madswamp · 2023-04-11 17:25:37 UTC

According to the TX16S specification, the 4 in 1 transmitter (which I'm using) is compatible with SPEKTRUM DSM2/DSMX. Which is inline with the behavior of the LED on the receiver.

## Reply by madswamp · 2023-04-11 17:41:37 UTC

Fixed the problem already, had to disable channel mapping in the configurations of the protocol in the controller. 

Thank you.