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  #101  
Old 09-04-2015, 07:36 PM
GTWreck GTWreck is offline
 
Join Date: Sep 2006
Location: Locust Grove, GA
Posts: 97
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Quote:
Originally Posted by Scrabo View Post
There is a new image just posted a few hours ago.

http://imgur.com/HAoNwiV

http://imgur.com/HAoNwiV
I installed this image and took it out to the hanger and fired up my panel mounted G3X+GDL39 and compared the traffic to the Stratus and Foreflight. The Stratux was picking up a couple extra targets that the GDL-39 wasn't seeing. Granted, the GDL-39 antenna is on the bottom of the plane. I also saw targets as far as 100nm away (@FL390). Overall, I'm fairly impressed with the range just using it on the ground.

The display in Foreflight is much improved over the last Stratux image. N-numbers and relative altitudes are displaying correctly.
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Aaron Sims
RV-10 (2015 Bronze Lindy)
RV-6A (sold)
Home Field: Mallards Landing (GA04)
Locust Grove, GA
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  #102  
Old 09-04-2015, 07:41 PM
Scrabo Scrabo is offline
 
Join Date: Dec 2008
Location: Phoenix, Arizona
Posts: 285
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Quote:
Originally Posted by GTWreck View Post
I installed this image and took it out to the hanger and fired up my panel mounted G3X+GDL39 and compared the traffic to the Stratus and Foreflight. The Stratux was picking up a couple extra targets that the GDL-39 wasn't seeing. Granted, the GDL-39 antenna is on the bottom of the plane. I also saw targets as far as 100nm away (@FL390). Overall, I'm fairly impressed with the range just using it on the ground.

The display in Foreflight is much improved over the last Stratux image. N-numbers and relative altitudes are displaying correctly.
Agree, it seems better overall and being able to disable the u and e prefixes on traffic cleans the screen up.
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  #103  
Old 09-04-2015, 08:08 PM
humptybump humptybump is offline
 
Join Date: Feb 2011
Location: USA
Posts: 3,179
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It's pretty impressive and it hasn't even hit its 1.0 release yet!

One of the big improvements will be the "read-only" SD card work. It will insure long term stability of the unit over many many flights.

If this sounds confusing, just remember that disconnecting the battery at the end of your flight is like turning off you home computer by pulling the plug out of the wall.

I'll definitely plan an update and flight this weekend!
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  #104  
Old 09-04-2015, 08:25 PM
David_Nelson's Avatar
David_Nelson David_Nelson is offline
 
Join Date: Feb 2006
Location: Austin, TX
Posts: 433
Default For your consideration

Hi Everybody,

Already having an ADS-B solution (NavWorx and AFS-4500), it didn't seem to make sense to duplicate the work that the NavWorx was doing (receiving and decoding ADS-B messages). So I took the StraTux project and substituted the NavWorx for the SDR and gen_gdl90 program. I wrote a simple Python script that essentially listens on the NavWorx's RS-232 TX line and re-broadcasts the ADS-B messages via WiFi so that ForeFlight Mobile (FFM) could take it in.

Things that don't seem to work just quite right:
- GPS Altitude. As noted in the bottom left corner of the FFM pictures as '-------'.
- Traffic positions appear delayed. Comparing the AFS-4500's display with what I saw out the window with what I saw on FFM, the AFS-4500 and actual won hands down. On one occasion, a jet landing into Austin was way off my left wingtip and several thousand feet higher. The AFS display had it spot on. FFM had it way behind and to my left.
- Traffic altitudes were off compared to the AFS-4500 display. At most they seemed about 1000 ft off. This may coincide with the lack of 'GPS Altitude' mentioned earlier.
- Course was delayed. Prior to reaching KSOA, I made a U-Turn. It took FFM maybe 30-60 seconds before it showed the correct course.

What seems to work but has not been confirmed as accurate:
- SIGMETs and AIRMETs
- WX RADAR and looping
- Surface Winds

As this was my first foray into FFM and ADS-B, I may have other info available that I don't know how to access/display properly. For example, at times I was receiving data from three ADS-B antennas but I don't know how to display their location.

Some screen shots I got today:

http://caura.homenet.org/gallery/d/28935-2/IMG_0060.PNG

http://caura.homenet.org/gallery/d/28939-2/IMG_0061.PNG

http://caura.homenet.org/gallery/d/28942-2/IMG_0062.PNG

To make this work, I used:
- A copy of StraTux - mainly for the WiFI Access Point work.
- RPi Model B
- RS-232 / USB Dongle
- Cigarette Lighter to USB Power Adaptor to power the RPi
- Some wire, connectors, and a DB-9 that plugs into the above RS-232 / USB Dongle

During development, I used a USB / RS-232 dongle that plugs into the RPi's GPIO pins.
Bear in mind that this is highly alpha level stuff and nothing about it is guaranteed. If you are interested in helping out, drop me a line and I'll share the source code and any notes.

Today's test flight was about 1.5 hours. I am planning on going to the Bad Lands fly-in , WX permitting, and I intend on taking this contraption and seeing how it does for the long haul (about 6.5 hours).

Question to the folks using StraTux: Have you compared FFM's ADS-B display with a known good ADS-B display solution?

Regards,
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RV-7A Tip-Up
NW Austin, TX
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  #105  
Old 09-04-2015, 10:28 PM
roadrunner20's Avatar
roadrunner20 roadrunner20 is offline
 
Join Date: Feb 2005
Location: Bay Pines, FL (based @ KCLW)
Posts: 1,955
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Received my hardware today.
Using a MacBookPro, I didn't have any luck installing the OS with the stratux image. Multiple issues with the SD write protect tab(had to apply tape), then formatting issues, then pi filler not able to find SD even though it was present. Will start over tomorrow from scratch.

Oh & I also got taboola adware from the downloads that keeps popping up a tab in Safari.
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Morphed RV7(formally 7A), N20DL, PnP Pilot
1190+ hours
2019 Donation Paid

Last edited by roadrunner20 : 09-04-2015 at 10:38 PM.
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  #106  
Old 09-05-2015, 03:58 AM
GTWreck GTWreck is offline
 
Join Date: Sep 2006
Location: Locust Grove, GA
Posts: 97
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Quote:
Originally Posted by roadrunner20 View Post
Received my hardware today.
Using a MacBookPro, I didn't have any luck installing the OS with the stratux image. Multiple issues with the SD write protect tab(had to apply tape), then formatting issues, then pi filler not able to find SD even though it was present. Will start over tomorrow from scratch.

Oh & I also got taboola adware from the downloads that keeps popping up a tab in Safari.
I had a similar problem using Pi Filler on MacOS. I fell back to using the terminal and the 'dd' program to write the image out.

Information here should help you out. If you're not comfortable figuring out which disk of the SD card, then you may not want to do this, as writing to the wrong disk device can potentially corrupt your hard disk.
https://www.raspberrypi.org/document...-images/mac.md
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Aaron Sims
RV-10 (2015 Bronze Lindy)
RV-6A (sold)
Home Field: Mallards Landing (GA04)
Locust Grove, GA
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  #107  
Old 09-05-2015, 06:06 AM
humptybump humptybump is offline
 
Join Date: Feb 2011
Location: USA
Posts: 3,179
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Thanks Aaron!

I'm not a Mac owner so I was looking for instructions online.

I found a wiki page that has several options for writing an "image" to an SD card for raspberry pi.

http://elinux.org/RPi_Easy_SD_Card_Setup
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  #108  
Old 09-05-2015, 06:45 AM
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roadrunner20 roadrunner20 is offline
 
Join Date: Feb 2005
Location: Bay Pines, FL (based @ KCLW)
Posts: 1,955
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Thank you Aaron.I will give a try later today.
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Danny "RoadRunner" Landry
Morphed RV7(formally 7A), N20DL, PnP Pilot
1190+ hours
2019 Donation Paid
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  #109  
Old 09-05-2015, 07:17 AM
sprucemoose's Avatar
sprucemoose sprucemoose is offline
 
Join Date: Jan 2005
Location: MKE
Posts: 1,519
Default Issues with Pi Filler

I too have had hit and miss success with Pi Filler for Mac. Try ApplePi Baker, which does the same thing and seems to work more reliably.

http://www.tweaking4all.com/hardware...pple-pi-baker/
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Jeff Point
RV-6, RLU-1 built & flying
Tech Counselor, Flight Advisor & President, EAA Chapter 18
Milwaukee
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  #110  
Old 09-05-2015, 11:45 AM
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catmandu catmandu is offline
 
Join Date: Dec 2005
Posts: 917
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Burned the new image this morning and took it out for a 2.5 cross-country. Attached the stock antenna to the canopy strut. Solid signal and information, better than my XGPS170 in the other plane performs. Had to restart twice airborne, but that was a function of the flaky, way too long power cord I was using. Need to find a nice short cord with 90* connections on each end.
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Mike C.
Sierra Nevada
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