GPS Rocket Locator for android (Now released !)
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fantasiiio
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I looked on internet and it doesn't seem to be UART compatible. It's too bad, they are sold for $22 shipped for a pair. I don't know exactly how they work.
Tetrahedron
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I am interested also. I can solder. Do you have plans, list of components and printed circuit board layouts and where to buy components (Digikey, Sparkfun..)?
I'd like to try it out. I have a Samsung Galaxy Exhilirate smart phone and I belive it has Android, would that work?
I'd like to try it out. I have a Samsung Galaxy Exhilirate smart phone and I belive it has Android, would that work?
what version of android are you running on your phone. unless he changed the code, it only runs on the latest version (4.2 or jelly bean).
also, the radios he used aren't legal for use in the us unless you are a ham.
fantasiiio
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My phone is on android 2.3.3 and my code always worked on my phone. I don't know where did you see it works only on 4.2
For my APC220, we can setup it on 418mhz that is not illegal. But I don't recommend the APC220, it doesn't go far enough. It barely goes to 400m (1200 feet) far.
And, for GPS, search on ebay 'gps uart'. There is a couple of gps modules there.
There is also a couple on sparkfun. Search for 'gps'. The LS20031 seem to be good.
For my APC220, we can setup it on 418mhz that is not illegal. But I don't recommend the APC220, it doesn't go far enough. It barely goes to 400m (1200 feet) far.
And, for GPS, search on ebay 'gps uart'. There is a couple of gps modules there.
There is also a couple on sparkfun. Search for 'gps'. The LS20031 seem to be good.
strange. It only worked on my phone that runs jb. I think Kevin found the same thing. could it be my version of the play services library (3.0.27)? what version are you using?
even at 1200 ft you are still over the power limits for 418 mhz, which would be illegal. and as area66 pointed out, there are time limits for this band that the gps is violating.
did you get your app on google play yet?
edit:
I just pulled down your latest code. I see you have an apk now so I'll give it a try. thanks!
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fantasiiio
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Really ? It's probably an error that I committed the .apk in svn
Check if you have the button 'find in sky'
If you have it, don't use it, it's only a webcam preview for now. But it will be an augmented reality to find the rocket in the sky.
If you don't have this button, it's because you have a too old version.
fantasiiio
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Yes, I know... I just want it to work for now. I'll beautifulify after.
But After thinking about it, the apk that was in svn was the stable version that was supposed to be on google play.
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No problem. Keep up the great work!
fantasiiio
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It's now available on Google play store: GPS Rocket Locator, it's the one with a red and yellow rocket.
Have fun.
Have fun.
Congrats! I just tried it out and it works fine, but what do the different beeps and bongs mean?
fantasiiio
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There is the bong, that make a sound every time it receive data from the gps. It tell you if you are loosing your rocket or not...
The beep is probably the radar beep. I use it when the rocket is on the ground and I'm walking to the rocket but Kevin wanted it to locate the rocket in the sky.
The two beeps are probably interfering... ?
ok. I heard the bong and the beep, but how do you know when the rocket is on the ground?
well that will be a problem because neither of us sell finished hardware. I guess you could try buying a class 1 bt gps receiver. It should just work but you'll probably only get a few hundred feet of range.
fantasiiio
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You check the path of the rocket. If the rocket moves, it's still in the airs...
Area66
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Lol, we come from the same place, I downloaded the app, I will orders the parts and give a try to our next high power launch in August ( still not sure in planing ) . My 5.5" patriot as plenty of space to pus electronics.
do you have some minimum movement threshold? due to gps inaccuracies, the rocket is always "moving".
It's great to see this in the store. I'll give it a go this weekend at our club launch (weather permitting).
fantasiiio
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It wont move on the map. Just try it, you will find your rocket
It wont move on the map. Just try it, you will find your rocket
I don't doubt it will find the rocket.
So, I had a chance to put my tracker up in one rocket yesterday. HPR flight to 5200 feet. This software showed the rocket on the pad right before launch but it appeared to lose the signal right on launch and didn't reacquire signal again until I went to recover the rocket after it landed. Signal was acquired at about 500 meters from the rocket. Not sure if it this was a phone, software or transmitter issue. I can understand having only 500 meters reception on the ground due to the rolling terrain, but I was hoping for better tracking in the air where I had line of sight to the rocket. I'll have some more opportunities to troubleshoot and get more experience with it this weekend when I'm at NYPower.
-brant
-brant
That's interesting. With this software, it is tough to tell if the problem was the gps lost lock and took a while to reacquire, or if there was a problem with the radio. I can believe the 500m range on the ground, but I would have expected better performance in the air.
Kevin's software logs the incoming data so you have a better idea what the problem could be.
Kevin's software logs the incoming data so you have a better idea what the problem could be.
fantasiiio
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Derek, you don't miss one, you always answer before anyone
What telemetry system did you use ? Xbee, 3dr radio or APC220 ?
The software just read what it receive. It's a serial port, all error handling have been already proccessed by the hardware at this stage. If the software don't receive it, it's probably because the hardware didn't.
At least, the software reconnected itself when you were near enough... this part works
But a debug console would be a must, I agree.
What telemetry system did you use ? Xbee, 3dr radio or APC220 ?
The software just read what it receive. It's a serial port, all error handling have been already proccessed by the hardware at this stage. If the software don't receive it, it's probably because the hardware didn't.
At least, the software reconnected itself when you were near enough... this part works
But a debug console would be a must, I agree.
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xbee. He has one of my trackers. He did a nice write with pics and posted it in the thread.
fantasiiio
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With APC220 I got 400m in the airs and 50m on the ground so, 500m on the ground is good.
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