DIY flight recorder for less than $50

Router, repeater (extender), GPS unit, antenna, tablet, FPV goggle, HD battery, charger, carrying case... etc.
pawelsky
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Re: DIY flight recorder for less than $50

Post by pawelsky » 10 Sep 2013, 07:55

Jackson3006 wrote:Can you tell me why the internal Prolific PL2303 is a bad choice?
Because Drone's firmware expects it to be CP210x

Chapulino
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Re: DIY flight recorder for less than $50

Post by Chapulino » 10 Sep 2013, 18:53

hI.
I have this unused gps
is posible to use
You know the specs.
Image
Image
Image
Image

thanks
obiously the mine is not broken

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Re: DIY flight recorder for less than $50

Post by Jackson3006 » 11 Sep 2013, 00:08

Hi Chapulino,

I think NO, the GSC3F-7879 Chip is a SiRF Star III, but the drone firmware exepects a SiRF Star IV Chip.

Regards,
Michael

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Re: DIY flight recorder for less than $50

Post by pawelsky » 11 Sep 2013, 10:12

Jackson3006 wrote:I think NO, the GSC3F-7879 Chip is a SiRF Star III, but the drone firmware exepects a SiRF Star IV Chip.
SiRF III seems to be working as well (see Kyrt's thread), but the problem here would be connections. I do not know the pinout of this PSP GPS.

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Re: DIY flight recorder for less than $50

Post by DroneFreakFPV » 13 Sep 2013, 22:31

Anyone know if this GPS would work?

http://compare.ebay.com/like/2210037586 ... s&var=sbar

Also, using a USB splitter, would it allow the video to be recorded to a thumbdrive and pull the GPS data from the reciever if thats even possible
ARD2/MiruMod/Miru GPS/Spektrum DX6I/ HogMod/GoPro Custom Mount/808 #16/ Wi-Fi Less FPV System
Tarot FY450/Turnigy Motors/I86L FC, HK Blue 30a ESCS/R610 Micro DSM 2.4ghz Reciever, GAUI Props

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Re: DIY flight recorder for less than $50

Post by cherrybombas » 16 Sep 2013, 19:01

Hi, I have a problem and assemble the GPS, but when I connect it to the Hardware AR.Drone 1.0 appears but not the software, did I wrong?
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Re: DIY flight recorder for less than $50

Post by pawelsky » 16 Sep 2013, 22:40

cherrybombas wrote:Hi, I have a problem and assemble the GPS, but when I connect it to the Hardware AR.Drone 1.0 appears but not the software, did I wrong?
Looks like no communication with GPS. Check all the wires.

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Re: DIY flight recorder for less than $50

Post by ShellDude » 17 Sep 2013, 06:47

Here are my preliminary results using the Navistick (no flash storage version):

Code: Select all

09-17 01:31:59.189: D/navdata.c(21227): gps on 1 num sats 7 lat 40.205821 lon -75.638696 elevation 99.400000 speed 0.300000 degrees 273.809998
09-17 01:31:59.269: D/navdata.c(21227): gps on 1 num sats 7 lat 40.205821 lon -75.638696 elevation 99.400000 speed 0.300000 degrees 273.809998
09-17 01:31:59.319: D/navdata.c(21227): gps on 1 num sats 7 lat 40.205821 lon -75.638696 elevation 99.400000 speed 0.300000 degrees 273.809998
09-17 01:31:59.389: D/navdata.c(21227): gps on 1 num sats 7 lat 40.205820 lon -75.638725 elevation 97.100000 speed 0.240000 degrees 280.859985
09-17 01:31:59.469: D/navdata.c(21227): gps on 1 num sats 7 lat 40.205820 lon -75.638725 elevation 97.100000 speed 0.240000 degrees 280.859985
09-17 01:31:59.519: D/navdata.c(21227): gps on 1 num sats 7 lat 40.205820 lon -75.638725 elevation 97.100000 speed 0.240000 degrees 280.859985
09-17 01:31:59.589: D/navdata.c(21227): gps on 1 num sats 7 lat 40.205820 lon -75.638725 elevation 97.100000 speed 0.240000 degrees 280.859985
09-17 01:31:59.649: D/navdata.c(21227): gps on 1 num sats 7 lat 40.205820 lon -75.638725 elevation 97.100000 speed 0.240000 degrees 280.859985
09-17 01:31:59.709: D/navdata.c(21227): gps on 1 num sats 7 lat 40.205820 lon -75.638725 elevation 97.100000 speed 0.240000 degrees 280.859985
09-17 01:31:59.779: D/navdata.c(21227): gps on 1 num sats 7 lat 40.205820 lon -75.638725 elevation 97.100000 speed 0.240000 degrees 280.859985
https://maps.google.com/maps?q=+40.2058 ... n%20false;

It's about 8 meters off

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Re: DIY flight recorder for less than $50

Post by cherrybombas » 18 Sep 2013, 01:59

pawelsky wrote:
cherrybombas wrote:Hi, I have a problem and assemble the GPS, but when I connect it to the Hardware AR.Drone 1.0 appears but not the software, did I wrong?
Looks like no communication with GPS. Check all the wires.

I use this cp2102 (image), I think the problem are in module serial convert, how I can get the data from the ardrone with telnet?
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Re: DIY flight recorder for less than $50

Post by ShellDude » 18 Sep 2013, 05:00

pawelsky wrote:...You can get additional debug information by telneting to the Drone and re-launching the program.elf with some extra parameters

-gps.verbose - will display details of the communication
-gps.log - will log gps data to gps.0.nav.csv and gps.0.kml (Google Earth format)
-gps.brick - disables all GPS messages (?)

before killing the program.elf note what parameters it is launched with (ps) and add these as well. In my case I'm calling

Code: Select all

killall -9 program.elf
/bin/program.elf -360p.slices 0 -live.tcp -gps.verbose -gps.log &
Note that Drone firmware also logs GPS commnication to /data/gps.log

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Re: DIY flight recorder for less than $50

Post by cherrybombas » 27 Sep 2013, 18:53

I change the cp2102 it worked!!!, now the GlobalSat BU-353S4 is the only GPS can I connecting to the ar.drone?, because I have another GPS (LS20031), when I connect it at the cp2102 and ardrone. I don't get data!!!

this is the gps: https://www.sparkfun.com/products/8975" onclick="window.open(this.href);return false;

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Re: DIY flight recorder for less than $50

Post by pawelsky » 28 Sep 2013, 02:33

cherrybombas wrote:I change the cp2102 it worked!!!, now the GlobalSat BU-353S4 is the only GPS can I connecting to the ar.drone?, because I have another GPS (LS20031), when I connect it at the cp2102 and ardrone. I don't get data!!!
If you want to connect directly you need SiRF based GPS (such as BU-353S4).

LS20031 is not SiRF (it is MT3329). For non-SiRF modules refer to this thread

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Re: DIY flight recorder for less than $50

Post by ShellDude » 29 Sep 2013, 17:55

Pawelsky I'm having a heck of a time getting my navistick 2g to reliably connect.

Every time I plug it back into sirfdemo it is at 57600, sirf. I set it back to 4800,nmea and when I'm lucky it initializes fine on the drone.

I've done all kinds of combinations of things from cold boots to factory resets. Any guidance you may have would be greatly appreciated.

My real flight recorder should be here next week but I'd really like to get the nsvisticks stable, even if it means some custom shellscrpiting on the drone.


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pawelsky
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Re: DIY flight recorder for less than $50

Post by pawelsky » 29 Sep 2013, 18:40

ShellDude wrote:Pawelsky I'm having a heck of a time getting my navistick 2g to reliably connect.

Every time I plug it back into sirfdemo it is at 57600, sirf. I set it back to 4800,nmea and when I'm lucky it initializes fine on the drone.

I've done all kinds of combinations of things from cold boots to factory resets. Any guidance you may have would be greatly appreciated.

My real flight recorder should be here next week but I'd really like to get the nsvisticks stable, even if it means some custom shellscrpiting on the drone.
I don't have Navistick. I guess you wanted to post that in Kyrt's thread.

I assume 57600 is your navistic's default (which is restored after the backup battery discharges). You will need to find a way to reprogram the defaults. Meybe Kyrt will be able to help.
Last edited by pawelsky on 29 Sep 2013, 19:35, edited 2 times in total.

ShellDude
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Re: DIY flight recorder for less than $50

Post by ShellDude » 29 Sep 2013, 18:47

Thx ... Will post this over there.

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