Hi,

What with all of this NATS ADS-B trial initiative, there should be good ways of detecting and plotting traffic now on Skydemon with a low cost ADS-B Receiver, to give us a very low cost PCAS.

So, working on a Raspberry Pi ADS-B receiver solution (super cheap! ~£50 or less - keep it open source), based on dump1090 or modesdeco2, but wondering if it's possible to adapt the FLARM interface to get traffic data displayed on Skydemon.  There is an ADSB2FLARM software module kicking around in the 'virtual radar' development community.

How does SD handle this?  Is there a better way to feed this data into SD?  Which interface would be recommended?  How about over Bluetooth?  If this is available is there a document describing the message format?

The Air-connect TCP/IP style isn't so attractive, since it's harder/more expensive to set up a WiFi Access Point with the RPi using a USB WiFi dongle.   (EDIT: Seems it's possible with a USB WiFi stick to create an AP, so maybe ok this way)

Cheers
Andy

Yes, you could do this with SkyDemon's existing Flarm over TCP interface. You'd need an access point or adhoc network with a known IP address (this isn't configurable in SkyDemon) and after connection, simply send GPS and Flarm messages interleaved just as the Air Connect does.

Thanks Tim,

Please are you able to point me to the most relevant document that you would have designed to, detailing the interface?

Cheers
Andy

It uses the standard FLARM interface - all the documentation can be found on the PowerFLARM website.

You need to be careful using those 'TV tuner' dongles in the air. They use a local oscillator in the tuner and spit out masses of RF interference spanning from VHF frequencies up past 1.5GHz (GPS) and beyond. One I tried knocked out a GPS receiver from half a metre away. Not good...

Thanks for the heads up. Will check that out!

We have no SkyDemon documentation related to this topic.

Hi All

According the ot butterfly connect it seems to be running a service on
ipaddr 192.168.1.1
port 2000
Is this what skydemon attempts to connect to ?

Thx
Lee

There are a couple of ADS-B receiver apps in the Android Play Store. DVB-T dongle hasn't arrived yet so haven't tried out but looks like feeds position data to mapping app.
Chris

The FUNCube dongle is very interesting as well http://www.funcubedongle.com/?page_id=1073
Apparently the Pi (though perhaps not the newer version) has capability issues with the amount of data is can deal with.
Would love to see someting like this come to fruition. A while ago (before the son arrived!) i had acquired a Pi and FUNcube (the original version) with the intention of coming up with a device that uses GPS signals "validated" (within the tolerance of such old equipment) by VORs etc.

Hi all, I'm new to the forum and am in the process of developing something similar to that described above.

I am essentially trying to emulate the service interface described here http://www.air-avionics.com/support/B104002.pdf to send ads-b positional information from raspberry pi to skydemon using the existing Flarm interface.

I was just wondering if Wobblewing had made any progress? Or if any users have any further insight into this, other than what has already been discussed!

Many thanks, James