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Re: [Paparazzi-devel] FrSKY Radios


From: Jeremy Reinertsen
Subject: Re: [Paparazzi-devel] FrSKY Radios
Date: Thu, 5 Apr 2012 20:50:46 +1000

I also read about the low baud rate limitation. With paparazzi, you could configure a low baud rate telemetry message to suit the data link. Not ideal in every case but, on a micro UAV, you could save the weight and power consumption of the PPM encoder and xbee with a single FrSKY receiver.


----- Original Message ----- From: "Gareth Roberts" <address@hidden>
To: <address@hidden>
Sent: Thursday, April 05, 2012 8:30 PM
Subject: Re: [Paparazzi-devel] FrSKY Radios


Hi Jeremy,

I'm using DFR-4 FAAST compatible receivers with a T6EX-FAAST & Umarim and so far they are working excellently. They are also lightweight (the one I have is 4 channels, but outputs 7 PPM channels) cheap and widely available. I briefly looked at telemetry, I read somewhere on't internet the issue is the maximum baud-rate is not in fact the advertised 4800bps and it starts dropping packets silently, but I could be wrong. There was an effort to get APM2 mavlink running over it.

At some point I hope to use the PWM RSSI output which the modules also provide in CPPM mode.

Cheers,
Gareth

On Thu, 05 Apr 2012 11:15:39 +0100, Jeremy Reinertsen <address@hidden> wrote:

Hi folks,

Anyone else using FrSKY 2.4GHz radio equipment with their Paparazzi autopilots?

I have been using a DJT module in an old JR radio and the D8RSP receiver. Their P series receivers have a "CPPM" output which is directly compatible with LPC based Paparazzi autopilots without the need for a seperate PPM encoder. See http://www.frsky-rc.com/ShowProducts.asp?id=86

They offer bi-directional telemetry which can be configured for use as a low baud rate data link and also offer a number of telemetry sensors which could be interfaced directly with paparazzi autopilots. They openly publish their communication protocol so there is very little reverse engineering required for sensor integration.

Cheers
Jeremy  _______________________________________________
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