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Installing eggfinder

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Garrace

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I just purchased eggfinder LCD start up kit. I want to use it primarily in my Tomach 2.6 and my AGM 58. My problem is both of these rockets are already built so nose cone sled mount mod would be difficult at this point. I also would like to easily move it between rockets. The instructions mention something about mounting in a 8" section of B55 tubing and attaching to recovery harness but not really sure how that all works and if there is room. Any suggestions or pictures would be a great help. Second question for down the line I would like to use it at some of the Mansfield WA launches and I don't get cell service there so what do you use for mapping to track with?
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OverTheTop

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Someone can correct me if I am wrong, but I think the idea is to just make another small tube that contains and protects the EggFinder Tx, and it sits in the payload bay with the chutes and harnesses. It needs to be attached to the harness properly as well :wink:

I think you can use something like Google Maps and download the maps when connected to the web. You can then plug in the location from the LCD to see it on the map.

Maybe Cris, or someone else, has another way of doing maps with the Egg LCD?
 

cerving

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I've connected an HC06 Bluetooth module to my LCD receiver and had it connect to a Windows laptop running MapSphere, which doesn't care about maps. Not much to see out in the desert anyway. Obviously, you have to be nearby the laptop during the flight, once you lose the fix and it's "down" then there's nothing much to track... at that point, you just save your MapSphere track, then go get your rocket using the LCD's coordinates.

You can also use Rocket Locator on an Android, there was some issues with caching maps for offline use awhile ago and I don't know if they've been resolved. I'm guessing that ksaves2 would know... :)
 

Cabernut

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On my Android phone, I use GPS Waypoint Finder. I enter the gps coords from the lcd receiver and it just gives direction and distance which was all I needed. I believe it can work on GPS only.
 

ksaves2

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I've connected an HC06 Bluetooth module to my LCD receiver and had it connect to a Windows laptop running MapSphere, which doesn't care about maps. Not much to see out in the desert anyway. Obviously, you have to be nearby the laptop during the flight, once you lose the fix and it's "down" then there's nothing much to track... at that point, you just save your MapSphere track, then go get your rocket using the LCD's coordinates.

You can also use Rocket Locator on an Android, there was some issues with caching maps for offline use awhile ago and I don't know if they've been resolved. I'm guessing that ksaves2 would know... :)
You're trolling Cris.:wink: Google Maps went away with the Android app "GPS Rocket Locator". It's still listed but the app just sits there. It's the default mapset so somewhat of a nuisance. One can switch it out to the Open Source Maps at the pull-down though. Caching works pretty well so get under a high speed link and cache the maptiles. I did track one time without maps and got the rocket back but I won't do that again. I could have driven on-road to a spot close to the downed rocket and
easily walked over to picked it up. I emailed GPSRL's author Francois and he says he doesn't have time to mess with the program. It's not Open Source so a programmer out there can't fix it for another photo map tile source.

Speaking of which................... I discovered yesterday for folks who APRS track with Beeline Ham GPS trackers and other stuff (AP510,Byonics et. al) There is an Arc-GIS server online that has accessible photomap tiles one can tie into the APRSISCE32 program for use: https://aprsisce.wikidot.com/ I've been able to get two instances of APRSISCE/32 to work with tracking EggFinders and I gotta tell you, it's great. Garrace can go a search here and find some of the screen saves I've posted of different flights. Can't expect to get every single position plotted but it's more than enough to get one going in the right direction and find the rocket. I haven't lost a single EggFinder rocket yet. Killed an EggFinder with a ballistic flight but the one, maybe two positions on my map got me to the fincan sticking out of the ground. Since it's a glass rocket, replaced the NC and EF and it still flies. If there wasn't an EF onboard, the rocket would have been lost, period.

If anyone flies APRS trackers, they can actually use any APRS program out there to track. The APRSISCE/32 can track the Eggfinders with two instances. I want to track and navigate to recovery. Something that MapSphere cannot do.
I've not had the time to print off instructions but I asked the question in the APRSISCE/32 message board and I found the link with all the replies: https://beta.groups.yahoo.com/neo/groups/aprsisce/conversations/topics/28516
Click on show all 22 messages and it does have the instructions I used to get it to work. Warning: APRSISCE/32 has a high learning curve. Conceivably a non-Ham could use it by itself tied to Eggfinder hardware perfectly legal as long
as they don't pipe it to the online APRSIS system with a "bogus" callsign.

YAAC works: https://www.ka2ddo.org/ka2ddo/YAAC.html. But only with hardwired peripherals ie. USB GPS and USB connection to the EF receiver. The Bluetooth option doesn't work with two NMEA streams at all. I was ecstatic because the setup with
YAAC is extremely simple for tying in the device's GPS for local position and piping the incoming EggFinder datastream as an APRS "pseudo" icon. It's right in the NMEA setup. I just rechecked the latest version and still a no-go on my trials.
I can get one NMEA B/T device to work but not two. Close but no cigar.

Xastir? You gotta be a Linux geek to get it to work. I'm not one but have worked with linux as a "script kiddie" since '94. Fellow who flies rockets gave me a python script I can tie the Eggfinder receiver as a network provider and the
Eggfinder rocket is plotted live on the map again as a "pseudo" APRS packet. Again, I posted a question on the yahoo group and someone smarter than me posted a reply that pulled it off. Here is the script if there
are any Xastir geeks out there: https://www.ece.uah.edu/~jdw/rockets/gps2aprs.txt. Just have to select "allow networking" from the Xastir pulldown and change .txt to .pl in the script. Have the
HC-06 bonded to the tablet and put that in the script (ie. /dev/rfcomm"X") have Xastir running and pull up a plain terminal and type the script command in. Will see positions streaming in and just minimize it.
They will get plotted to Xastir.
I actually got this working in a Pocket CHIP: https://getchip.com/pages/pocketchip Have to ditch the provided firmware and update to a standard "Jessie" distro but that is available on their site. I have to run Xastir under a jury rigged "root" account but once booted up Xastir is a fully functioning tracker and navigation solution in this "teeny, tiny" device. Too bad it's pretty hard for a "layperson" to setup Xastir.

A nice APRS tracking solution any HAM can do is a single wire connection between a Kenwood D72A and a Garmin 60Cs or 60CsX. It will track and navigate APRS Beeline GPS devices in real time with no muss or fuss. Will constantly calculate a navigation
solution live. It's my go to for APRS tracking when I don't want to take the time to setup a tablet. The Garmins with a round serial port can be has used from Ebay for a reasonable cost and a free mapset can be had here: https://garmin.openstreetmap.nl/
The Points of Interest are not worth squat on the OSM maps at the above address but the maps are good. This is the Kenwood D72A to Garmin cable: https://www.gpsgeek.com/products/in...h-d7a-tm-d700a-aprs-to-garmin-4-pin-round-gps.

That's it in a nutshell. I'm tickled a photo map tile set is out there for free use again. If one gets a taste of live tracking and navigating on a map they'll not want to do it any other way. Kurt
 

Garrace

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I am afraid at my age (64) I'm kinda computer challenged.lol. Can I just use like a cheap or borrowed hand held garmin GPS and enter the lat/long from the eggfinder lcd for areas where my iPhone has no service?
 

cerving

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I am afraid at my age (64) I'm kinda computer challenged.lol. Can I just use like a cheap or borrowed hand held garmin GPS and enter the lat/long from the eggfinder lcd for areas where my iPhone has no service?
Absolutely. I know people that use Garmins because they already had them and they didn't want to mess around learning a new app. You also don't need Internet service for an iPhone if you don't care about the map; I use MotionX with mine with the maps off. Just follow the track, it will take you right there.
 

ksaves2

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Absolutely. I know people that use Garmins because they already had them and they didn't want to mess around learning a new app. You also don't need Internet service for an iPhone if you don't care about the map; I use MotionX with mine with the maps off. Just follow the track, it will take you right there.
The only issue with manual input is one needs to sit down, read the manual and make sure the units are set properly in the Garmin (or whatever handheld mapping GPS they are using) If the EF LCD is in degrees/decimal degrees, make dern sure the Garmin is so set. Otherwise it's off on a wild goose chase.
Believe me I've seen it happen to others. One of my proudest, satisfying moments was when a guy came in from the field with his Beeline APRS tracking rocket
after a long search. I asked what the problem was and he admitted he input the lat/long units incorrectly and was on an extended search. I noticed he has
a D72A and a Garmin 60CsX. I happily pointed out he just needed a cable to interconnect the two for live APRS tracking. We exchanged email addresses and I
gave him more information in an email (I didn't have my rigs with me that day). Next launch he was all smiles.
I will add the out of production Yaesu VX-8GR can do the same trick as the D72A with the same interface cable. It is the only Yaesu unit that can be easily interconnected to the "round" serial port Garmin 60Cs series. Yaesu always seems to miss the mark on APRS rigs one way or another. Kurt
 
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