Stratus wanna-be (Stratux)

[humptybump]

Brian, it's a fun project and there is enough interest (and GitHub contribution) that it's is maturing well. I expect the quality of the data is mostly stable now and the work is on software stability, usability, and features.

There is also growing activity around designing cases for the components. A few 3D printable cases are popping up and going through iterations. People are also finding ways to use generic cases efficiently.

[exsterminator]

Help please: if the software is loaded, 4 towers are showing on Foreflight and I can see our aircraft moving, suggestions as to why we cannot see any other aircraft in the vicinity?

We had traffic fly by us about 2000 feet away and it did not register, and we were close to SFO International airport . . .

Assume this is something very straightforward that we overlooked.

[dynonsupport]

Daniel,
ADS-B is only designed to receive traffic reliably if you are in an aircraft equipped with ADS-B OUT. Stratux is only ADS-B in, so your experience is expected. You'll have the same experience when flying unless your airplane has a ADS-B OUT transponder or UAT.

[okei]

Originally Posted by exsterminator

Help please: if the software is loaded, 4 towers are showing on Foreflight and I can see our aircraft moving, suggestions as to why we cannot see any other aircraft in the vicinity?

We had traffic fly by us about 2000 feet away and it did not register, and we were close to SFO International airport . . .

Assume this is something very straightforward that we overlooked.

Do you see any traffic at all? Maybe you don't have the traffic layer enabled in ForeFlight? It isn't enabled by default and it appears AFTER you connect to the device.

[boom3]

Originally Posted by dynonsupport

Daniel,
ADS-B is only designed to receive traffic reliably if you are in an aircraft equipped with ADS-B OUT. Stratux is only ADS-B in, so your experience is expected. You'll have the same experience when flying unless your airplane has a ADS-B OUT transponder or UAT.

This is something I don't have my head totally around. I mean I get it, but I don't. What happens if you fly right next to your buddy that has ADS-B OUT? Would you receive all the traffic then? What if your buddy was 10 miles away?
What if some other guy in the your general vicinity has ADS-B OUT? I guess I just don't get the waking up the ground stations part.

[Brantel]

Originally Posted by boom3

This is something I don't have my head totally around. I mean I get it, but I don't. What happens if you fly right next to your buddy that has ADS-B OUT? Would you receive all the traffic then? What if your buddy was 10 miles away?
What if some other guy in the your general vicinity has ADS-B OUT? I guess I just don't get the waking up the ground stations part.

There are specs about how big the bubble is around an aircraft broadcasting but I doubt it is actually that well defined in reality.

My experience is that yes, my wingmen can get traffic if they fly with me even though they are not broadcasting.

Have not tested how far away from me that works but since the ground stations are omni directional, I bet is works for some distance.

At Osh, I kept receiving traffic all the way to the field even though I turned off my xponder 30 miles out. That means someone else was waking up the ground stations besides me.....

[dynonsupport]

ADS-B ground stations send out traffic for 15 miles around aircraft they know about and +/- 5,000' of the aircraft. They only do this on the frequency the aircraft can receive on ADS-B IN.

You can "piggyback" on another ADS-B out plane. But if you are 12 miles ahead of and 4,000' above that plane, you can only see planes 3 miles ahead and 1,000' above. And this assumes the other plane has the same ADS-B IN that you do. If they don't have ADS-B IN or have it on 1090 and you're 978, it doesn't do anything for you.

Almost no Airliners are ADS-B out (about 3%) and none of them are ADS-B IN, so they aren't useful to wake up ground stations.

Even worse, if the plane has dual band ADS-B in, ADS-B OUT targets won't be re-broadcast so you can miss some targets even when the ground station is woken up and it looks like you have coverage.

In reality, this means you can't rely on traffic at all unless you have ADS-B out yourself.

[JimS]

Has anyone had any luck using this setup with FltPln.com on a Nexus7?

[humptybump]

At the risk of VAF rules drift, there is a post on reddit that implies someone is using it with FltPlan Go.

https://www.reddit.com/r/stratux/com...an_go_traffic/

This VAF thread is great but I also encourage people interested in Stratux to follow the reddit subgroup which has become the primary source of information after the GitHub source repository and image download site.

[Scrabo]

There is a new image just posted a few hours ago.

http://imgur.com/HAoNwiV


1090ES on/off toggle - working now.

Interface improvements.

Data replay - stops sending data when app is not in foreground or iPad screen is off. Buffers data and sends it when app is in the foreground and screen is on again.

Callsign / tail number for TIS-B traffic. (ie removes "u" & "e" from tail numbers)

Here's mine with only cable tidy up and a container to do.

http://imgur.com/HAoNwiV