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Re: [Paparazzi-devel] How to solve the radio control delay ?

From: Felix Ruess
Subject: Re: [Paparazzi-devel] How to solve the radio control delay ?
Date: Mon, 18 Aug 2014 19:51:54 +0200

Hi Heinrich,

note that this is not correct, please check the facts before getting angry....

While you can add averaging filters for PPM input on selected channels, this is usually only enabled for channels that have discrete commands (e.g. switches).
You can set that with the average attribute of each channel in your radio xml file as described in the documentation:


how did you measure the delay? What is your setup?
Depending on which components and subsystems you use there are lots of different places to check for delays...

Cheers, Felix

On Mon, Aug 18, 2014 at 5:44 PM, Prof. Dr.-Ing. Heinrich Warmers <address@hidden> wrote:
there is a filter for the RC stick signal.
I am very angry about this filter since it is not possible to shut of the motors by RC signal direct.
It is a dangers feature of paparazzi.
I think we need a option  to bypass any filter of the RC signals.
The filter should  bee the total aircraft.
If one or two impulses are wrong nothing dangerous occurs since every impulse is send 50 times per second.


Eltonwu schrieb:

   I use the ATT_RC mode to fly the rotorcraft. I found the radio control
has a little delay when control the craft's attitude.For example,when I push
the stick up,the craft changes it's attitude after about 200ms.When I
release the stick,the craft recover horizontality after about 200ms.
   Does anyone know how to solve this problem or encounter this problem? Is
it a PID tuning problem?

   Thanks in advance.

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