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Feeature Request: Hardware Tool to output serial Signals to steer my autopilot


Feeature Request: Hardware Tool to output serial Signals to steer my...
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pilot-byom
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NMEA2000 is a very bad thing to do as almost no aviation devices will understand that. NMEA0183 or AVLINK will do the job and it does. Yes, I was with a friend doing the Trio for certified EASA-reg and yes, I saw the Trio autopilot driven by BT from a moving map navigational app - even though it is not Skydemon the setup looked easy enough to do that in a very short time on any moving maps. I won't do marketing for the competition, but this is a wake up call.
Edited 5/12/2019 5:25:09 PM by MarkusM
Michael Rubio
Michael Rubio
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Anybody knows if this (-or similar hardware out there) somehow in some kind of way can be used to link Autopilot with the need for an NMEA signal with Skydemon IPad?


Mike Alpha
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Hi,
as far as it concerns me I use exactly the illustrated combination.

The only thing to change on the hardware side is the connection from the EFIS GPS Input (RX) to the Air Connect (TX, PIN 3). Today the EFIS (in my case Flybox Oblò) gets the GPS coordinates directly from the FLARM device.

If you are interested, I would also be happy to support you for testing.




Tim Dawson
Tim Dawson
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So have you got your autopilot connected such that comms with your AirConnect are routed to it? Just so we are clear?
Joachim Gothe
Joachim Gothe
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Hi,
I have Skydemon on an iPad, Powerflarm, Air Connect Modul, Trio Autopilot and a VAN's RV6 Experimental. I am electronic engineer.
Do you need a Beta Tester ?? . ;-) I will be on AERO in Friedrichshafen on the first day of the fair.
Achim


Edited 3/31/2019 11:01:42 PM by Joachim Gothe
Mike Alpha
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Hi all,

It is much simpler than it seems: all requiredhardware is already available on the market. All we need is a ‘piece’ ofsoftware (OK, it can be more than just a piece).

For illustration here is a typical device scheme:


The PowerFLARM sends the GPS coordinates and trafficinformation via RS 232 to the RxD port of the AIR CONNECT. From there the data goesvia WLAN to the Tablet -> SkyDemon. So far so good.

The EFIS receives the data sentences $GPRMC and $GPGGAin accordance with the NEMA1083 format. These data usually come from the GPSmouse. This makes it possible to fly in connection with the AUTOPILOT CONTROLUNIT in heading/tracking holding mode (but not in the navigation mode).

To fly to a certain waypoint or to track a flight routein the navigation mode, we need the $GPRMB data set in addition!

Therefore the solution would look like this: SkyDemonprepares the NEMA datasets

- $GPRMC

- $GPGGA

- $GPRMB

The GPS coordinates itself can either come from anexternal source (FLARM) or from the internal GPS receiver of the tablet, liketoday.

Only the sentence $GPRMB is added. This stands for"recommended minimum navigation information when following a route".The exact structure is defined in NEMA1083. The details are publicly available.

SkyDemon would only have to SEND these three data setsvia WLAN to the bidirectional AIR CONNECT. From there they would be forwarded via the TxD portof the RS232 interface to the EFIS. That would be all!

On the hardware side, everything is available. Only the implementation of the algorithm isrequired to prepare the $GPRMB data set.

@Tim: It would be great if you could take a look atthis suggestion. It would be extremely helpful in practice if we could use theNAV function of the autopilot and follow the currrent SkyDemon routeautomatically. Today you have to trim the autopilot by hand and change thecourse manually fter the next leg. Not really practical.

From my point of view this would be a further great featurefor SkyDemon!

Mike






ploucandco
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Tim Dawson
Tim Dawson
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I must be missing something. You can't plug an iPad or an Android tablet directly into an autopilot, so we're looking at a wireless link which requires hardware and some protocol documentation. What's the hardware that everyone is using to connect their autopilot to their tablets?
pilot-byom
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There is no additional product needed. Only thing missing is software.
Tim Dawson
Tim Dawson
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Look at what? Are you saying there is such a product? If so, we can begin discussions with its manufacturer.
GO

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