Using ODK for a tree survey with a Motorola phone. Has anyone had better gps
readings than the phone provides by using a peripheral GPS with bluetooth?
Chris Buddenhagen
android can connect to bluetooth gpses (see
http://forum.xda-developers.com/showthread.php?t=833094 for how) and
collect should be able to use that bluetooth gps. i haven't tried it
myself, so let us know how it goes...
···
On Tue, May 24, 2011 at 07:21, Chris Buddenhagen wrote: > Using ODK for a tree survey with a Motorola phone. Has anyone had better gps > readings than the phone provides by using a peripheral GPS with bluetooth? > > Chris Buddenhagen > > -- > Post: opendatakit@googlegroups.com > Unsubscribe: opendatakit+unsubscribe@googlegroups.com > Options: http://groups.google.com/group/opendatakit?hl=en >Yes, this works really well. We are using Bluetooth GPS provider from
app market and connecting to external GPS data logger. Great for
remote areas.
Steve
Also using the Bluetooth GPS app and getting excellent results with Globalsat
BT-359 - GPS receiver modulewhich has given us nearly 24hrs worth of use
before recharging!
Joy
···
On Thu, May 26, 2011 at 11:59 AM, Steve wrote:Yes, this works really well. We are using Bluetooth GPS provider from
app market and connecting to external GPS data logger. Great for
remote areas.Steve
--
Post: opendatakit@googlegroups.com
Unsubscribe: opendatakit+unsubscribe@googlegroups.com
Options: http://groups.google.com/group/opendatakit?hl=en
Is it also more accurate? Which GPS data logger did you choose?
Does it drain the battery faster?
Thanks for responding
Chris Buddenhagen
Also using the Bluetooth GPS app and getting excellent results with
Globalsat
···
On May 26, 2011 12:19 PM, "Joy Buolamwini" wrote: > BT-359 - GPS receiver modulewhich has given us nearly 24hrs worth of use > before recharging! > > Joy > > On Thu, May 26, 2011 at 11:59 AM, Steve >> >> Yes, this works really well. We are using Bluetooth GPS provider from >> app market and connecting to external GPS data logger. Great for >> remote areas. >> >> Steve >> >> -- >> Post: opendatakit@googlegroups.com >> Unsubscribe: opendatakit+unsubscribe@googlegroups.com >> Options: http://groups.google.com/group/opendatakit?hl=en >> > > -- > Post: opendatakit@googlegroups.com > Unsubscribe: opendatakit+unsubscribe@googlegroups.com > Options: http://groups.google.com/group/opendatakit?hl=enWow cool.
Chris Buddenhagen
Also using the Bluetooth GPS app and getting excellent results with
Globalsat
···
On May 26, 2011 12:19 PM, "Joy Buolamwini" wrote: > BT-359 - GPS receiver modulewhich has given us nearly 24hrs worth of use > before recharging! > > Joy > > On Thu, May 26, 2011 at 11:59 AM, Steve >> >> Yes, this works really well. We are using Bluetooth GPS provider from >> app market and connecting to external GPS data logger. Great for >> remote areas. >> >> Steve >> >> -- >> Post: opendatakit@googlegroups.com >> Unsubscribe: opendatakit+unsubscribe@googlegroups.com >> Options: http://groups.google.com/group/opendatakit?hl=en >> > > -- > Post: opendatakit@googlegroups.com > Unsubscribe: opendatakit+unsubscribe@googlegroups.com > Options: http://groups.google.com/group/opendatakit?hl=enWe are using iBlue 747A+ and it is getting very good results. Lasts
for a very long time on full charge and small enough to chuck in your
back pack and forget about. Provides mock GPS co-ords via the
bluetooth GPS provider and ODK picks that up.
I get about within 17 meters inside my house in the States. I will be
testing in Ethiopia later this week, so I can give a more field based report
at that time. Doesn't seem to drain the battery any faster/in fact it seems
to be saving the battery of the tablet we are using.since it isn;t using the
internal gps.
Attached is the apk for the gps bluetooth app. Turn on bluetooth and connect
to the receiver first through android settings, and make sure the tablet's
gps is enabled.
All the settings in bluegps seem to have no effect; they all seem to work.
If you have an error, charge the battery, or reconnect the bluetooth.
BlueGps.apk (92.3 KB)
···
On Thu, May 26, 2011 at 12:28 PM, Chris Buddenhagen wrote:Is it also more accurate? Which GPS data logger did you choose?
Does it drain the battery faster?
Thanks for responding
Chris Buddenhagen
On May 26, 2011 12:19 PM, "Joy Buolamwini" joy@jovialdesigns.com wrote:Also using the Bluetooth GPS app and getting excellent results with
Globalsat
BT-359 - GPS receiver modulewhich has given us nearly 24hrs worth of usebefore recharging!
Joy
On Thu, May 26, 2011 at 11:59 AM, Steve <stevenpbachman@googlemail.com wrote:
Yes, this works really well. We are using Bluetooth GPS provider from
app market and connecting to external GPS data logger. Great for
remote areas.Steve
--
Post: opendatakit@googlegroups.com
Unsubscribe: opendatakit+unsubscribe@googlegroups.com
Options: http://groups.google.com/group/opendatakit?hl=en--
Post: opendatakit@googlegroups.com
Unsubscribe: opendatakit+unsubscribe@googlegroups.com
Options: http://groups.google.com/group/opendatakit?hl=en--
Post: opendatakit@googlegroups.com
Unsubscribe: opendatakit+unsubscribe@googlegroups.com
Options: http://groups.google.com/group/opendatakit?hl=en
Thanks I'd like to hear more from anyone else.
Especially as to accuracy of different models.
Chris Buddenhagen
···
On Thu, May 26, 2011 at 12:40 PM, Joy Buolamwini wrote:I get about within 17 meters inside my house in the States. I will be
testing in Ethiopia later this week, so I can give a more field based report
at that time. Doesn't seem to drain the battery any faster/in fact it seems
to be saving the battery of the tablet we are using.since it isn;t using the
internal gps.Attached is the apk for the gps bluetooth app. Turn on bluetooth and
connect to the receiver first through android settings, and make sure the
tablet's gps is enabled.
All the settings in bluegps seem to have no effect; they all seem to work.
If you have an error, charge the battery, or reconnect the bluetooth.On Thu, May 26, 2011 at 12:28 PM, Chris Buddenhagen < cbuddenhagen@gmail.com> wrote:
Is it also more accurate? Which GPS data logger did you choose?
Does it drain the battery faster?
Thanks for responding
Chris Buddenhagen
On May 26, 2011 12:19 PM, "Joy Buolamwini" joy@jovialdesigns.com wrote:Also using the Bluetooth GPS app and getting excellent results with
Globalsat
BT-359 - GPS receiver modulewhich has given us nearly 24hrs worth of
usebefore recharging!
Joy
On Thu, May 26, 2011 at 11:59 AM, Steve <stevenpbachman@googlemail.com wrote:
Yes, this works really well. We are using Bluetooth GPS provider from
app market and connecting to external GPS data logger. Great for
remote areas.Steve
--
Post: opendatakit@googlegroups.com
Unsubscribe: opendatakit+unsubscribe@googlegroups.com
Options: http://groups.google.com/group/opendatakit?hl=en--
Post: opendatakit@googlegroups.com
Unsubscribe: opendatakit+unsubscribe@googlegroups.com
Options: http://groups.google.com/group/opendatakit?hl=en--
Post: opendatakit@googlegroups.com
Unsubscribe: opendatakit+unsubscribe@googlegroups.com
Options: http://groups.google.com/group/opendatakit?hl=en--
Post: opendatakit@googlegroups.com
Unsubscribe: opendatakit+unsubscribe@googlegroups.com
Options: http://groups.google.com/group/opendatakit?hl=en
Chris (and Community)
I'm trying to get this to work for the BT GPS 359 model and my Nexus
One - here in Seattle and then in other countries where I have
operational partners. Can you give me some advice on this?
Currently, ODK location is returning an accuracy of 9 meters while
using the Bluetooth (BT) GPS.
"This" being the following use case:
Use ODK on an Android device, but get better GPS results while using
less battery power of the smartphone.
I'm maybe a little confused about how to determine if this is working
and what settings should be on/off. In particular, when using a BT
GPS device, what should my Settings read? : Location: Use GPS
Satellites [Unchecked | Checked] - I believe CHECKED.
If Unchecked, "no location services are available"
I checked, I'm not sure its actually using the BT device. ???
DETAILS:
BT-GPS-37BB94
Paired on Android, 2.3.4 (Nexus One)
I followed these instructions:
* enable Settings/Applications/Unknown sources,
* enable Settings/Applications/Development/Allow mock locations,
* download and install the apk.
Downloaded the apk - see :
http://forum.xda-developers.com/showthread.php?t=833094
In the BlueGPS4 app:
Start/Stop GPS: [Bluetooth GPS is On]
SiRF GPS : [Use SiRF options]
Location Provider options: "Bluetooth GPS will replace internal GPS
This last sentence has me thinking that with "GPS turned on" at the
Android device level, that the external GPS will do the actual
work.
Test 1:
Enable BT GPS, place 8 meters away with view of sky
Use ODK inside, attempt record location
9 meters accuracy within 20 seconds
Test 2:
Disable BT GPS
Use ODK inside
Attempt record location--> Compass symbol appears
No response after 180 seconds, end
Test 3:
Disable BT GPS
Use ODK outside
Attempt record location --> Compass symbol appears in top display
Reponse within 40 seconds @ 18 meters accuracy
6.71 meters accuracy after another 30-40 seconds
Accuracy varying up and down over the next 120 seconds
No better than 6.71 m
Test 4:
Enable BT GPS, use with partial sky view
Use ODK inside nearby
Attempt record location in ODK --> no symbol appears in top display
tray
Accuracy of 9meters within 45 seconds
Are there other tests to do?
···
On May 26, 1:58 pm, Chris Buddenhagen wrote: > Thanks I'd like to hear more from anyone else. > > Especially as to accuracy of different models. > > Chris Buddenhagen > > On Thu, May 26, 2011 at 12:40 PM, Joy Buolamwini wrote: > > > I get about within 17 meters inside my house in the States. I will be > > testing in Ethiopia later this week, so I can give a more field based report > > at that time. Doesn't seem to drain the battery any faster/in fact it seems > > to be saving the battery of the tablet we are using.since it isn;t using the > > internal gps. > > > Attached is the apk for the gps bluetooth app. Turn on bluetooth and > > connect to the receiver first through android settings, and make sure the > > tablet's gps is enabled. > > All the settings in bluegps seem to have no effect; they all seem to work. > > If you have an error, charge the battery, or reconnect the bluetooth. > > > On Thu, May 26, 2011 at 12:28 PM, Chris Buddenhagen < cbuddenha...@gmail.com> wrote: > > >> Is it also more accurate? Which GPS data logger did you choose? > > >> Does it drain the battery faster? > > >> Thanks for responding > > >> Chris Buddenhagen > >> On May 26, 2011 12:19 PM, "Joy Buolamwini" wrote: > >> > Also using the Bluetooth GPS app and getting excellent results with > >> Globalsat > >> > BT-359 - GPS receiver modulewhich has given us nearly 24hrs worth of > >> use > > >> > before recharging! > > >> > Joy > > >> > On Thu, May 26, 2011 at 11:59 AM, Steve > >> >> Yes, this works really well. We are using Bluetooth GPS provider from > >> >> app market and connecting to external GPS data logger. Great for > >> >> remote areas. > > >> >> Steve > > >> >> -- > >> >> Post: opendatakit@googlegroups.com > >> >> Unsubscribe: opendatakit+unsubscribe@googlegroups.com > >> >> Options:http://groups.google.com/group/opendatakit?hl=en > > >> > -- > >> > Post: opendatakit@googlegroups.com > >> > Unsubscribe: opendatakit+unsubscribe@googlegroups.com > >> > Options:http://groups.google.com/group/opendatakit?hl=en > > >> -- > >> Post: opendatakit@googlegroups.com > >> Unsubscribe: opendatakit+unsubscribe@googlegroups.com > >> Options:http://groups.google.com/group/opendatakit?hl=en > > > -- > > Post: opendatakit@googlegroups.com > > Unsubscribe: opendatakit+unsubscribe@googlegroups.com > > Options:http://groups.google.com/group/opendatakit?hl=enI made no further progress on this I cannot give any meaningful advice.
Chris Buddenhagen
Chris (and Community)
I'm trying to get this to work for the BT GPS 359 model and my Nexus
One - here in Seattle and then in other countries where I have
operational partners. Can you give me some advice on this?
Currently, ODK location is returning an accuracy of 9 meters while
using the Bluetooth (BT) GPS."This" being the following use case:
Use ODK on an Android device, but get better GPS results while using
less battery power of the smartphone.I'm maybe a little confused about how to determine if this is working
and what settings should be on/off. In particular, when using a BT
GPS device, what should my Settings read? : Location: Use GPS
Satellites [Unchecked | Checked] - I believe CHECKED.If Unchecked, "no location services are available"
I checked, I'm not sure its actually using the BT device. ???DETAILS:
BT-GPS-37BB94
Paired on Android, 2.3.4 (Nexus One)I followed these instructions:
- enable Settings/Applications/Unknown sources,
- enable Settings/Applications/Development/Allow mock locations,
- download and install the apk.
Downloaded the apk - see :
http://forum.xda-developers.com/showthread.php?t=833094
http://sourceforge.net/projects/bluegps4droid/files/
In the BlueGPS4 app:
Start/Stop GPS: [Bluetooth GPS is On]
SiRF GPS : [Use SiRF options]
Location Provider options: "Bluetooth GPS will replace internal GPSThis last sentence has me thinking that with "GPS turned on" at the
Android device level, that the external GPS will do the actual
work.Test 1:
Enable BT GPS, place 8 meters away with view of sky
Use ODK inside, attempt record location
9 meters accuracy within 20 secondsTest 2:
Disable BT GPS
Use ODK inside
Attempt record location--> Compass symbol appears
No response after 180 seconds, endTest 3:
Disable BT GPS
Use ODK outside
Attempt record location --> Compass symbol appears in top display
Reponse within 40 seconds @ 18 meters accuracy
6.71 meters accuracy after another 30-40 seconds
Accuracy varying up and down over the next 120 seconds
No better than 6.71 mTest 4:
Enable BT GPS, use with partial sky view
Use ODK inside nearby
Attempt record location in ODK --> no symbol appears in top display
tray
Accuracy of 9meters within 45 secondsAre there other tests to do?
Thanks I'd like to hear more from anyone else.
Especially as to accuracy of different models.
Chris Buddenhagen
I get about within 17 meters inside my house in the States. I will be
testing in Ethiopia later this week, so I can give a more field based
report
at that time. Doesn't seem to drain the battery any faster/in fact it
seems
to be saving the battery of the tablet we are using.since it isn;t
using the
internal gps.Attached is the apk for the gps bluetooth app. Turn on bluetooth and
connect to the receiver first through android settings, and make sure
the
tablet's gps is enabled.
All the settings in bluegps seem to have no effect; they all seem to
work.
If you have an error, charge the battery, or reconnect the bluetooth.Is it also more accurate? Which GPS data logger did you choose?
Does it drain the battery faster?
Thanks for responding
Chris Buddenhagen
Also using the Bluetooth GPS app and getting excellent results with
Globalsat
BT-359 - GPS receiver modulewhich has given us nearly 24hrs worth
of
usebefore recharging!
Joy
Yes, this works really well. We are using Bluetooth GPS provider
from
···
On Jul 17, 2011 3:37 PM, "jpd" wrote: > On May 26, 1:58 pm, Chris Buddenhagen wrote: >> On Thu, May 26, 2011 at 12:40 PM, Joy Buolamwini > > On Thu, May 26, 2011 at 12:28 PM, Chris Buddenhagen < cbuddenha...@gmail.com> wrote: >> >> On May 26, 2011 12:19 PM, "Joy Buolamwini" wrote: >> >> > On Thu, May 26, 2011 at 11:59 AM, Steve < stevenpbach...@googlemail.com wrote: >> >> >> app market and connecting to external GPS data logger. Great for >> >> >> remote areas. >> >> >> >> Steve >> >> >> >> -- >> >> >> Post: opendatakit@googlegroups.com >> >> >> Unsubscribe: opendatakit+unsubscribe@googlegroups.com >> >> >> Options:http://groups.google.com/group/opendatakit?hl=en >> >> >> > -- >> >> > Post: opendatakit@googlegroups.com >> >> > Unsubscribe: opendatakit+unsubscribe@googlegroups.com >> >> > Options:http://groups.google.com/group/opendatakit?hl=en >> >> >> -- >> >> Post: opendatakit@googlegroups.com >> >> Unsubscribe: opendatakit+unsubscribe@googlegroups.com >> >> Options:http://groups.google.com/group/opendatakit?hl=en >> >> > -- >> > Post: opendatakit@googlegroups.com >> > Unsubscribe: opendatakit+unsubscribe@googlegroups.com >> > Options:http://groups.google.com/group/opendatakit?hl=en > > -- > Post: opendatakit@googlegroups.com > Unsubscribe: opendatakit+unsubscribe@googlegroups.com > Options: http://groups.google.com/group/opendatakit?hl=enChris - no worries. Its looking good to me.
I finally found the post that explained this - must have overlooked it
the first time:
http://sourceforge.net/p/bluegps4droid/discussion/general/thread/d6201933/
The specs for the device I'm using are found at :
www.usglobalsat.com/store/download/630/bt359w_ds_ug.pdf
The price of each device was $42 from Amazon with shipping another
$10.
My initial impression is that this is working as expected, but I run
into some ODK wierdness - I think.
ODK-devs: The accuracy I'm getting in ODK is not as advertised for
the BlueTooth device, as I am getting only 9 meters accuracy in ODK
and I should be getting in the range of 1-5 meters, AND, when I look
at the accuracy in google maps, it appears to be within 1-3 meters as
I walk along the sidewalk. I wonder if there is an issue there?
- James
···
On Jul 17, 12:44 pm, Chris Buddenhagen wrote: > I made no further progress on this I cannot give any meaningful advice. > > Chris Buddenhagen > On Jul 17, 2011 3:37 PM, "jpd" wrote: > > > Chris (and Community) > > > I'm trying to get this to work for the BT GPS 359 model and my Nexus > > One - here in Seattle and then in other countries where I have > > operational partners. Can you give me some advice on this? > > Currently, ODK location is returning an accuracy of 9 meters while > > using the Bluetooth (BT) GPS. > > > "This" being the following use case: > > Use ODK on an Android device, but get better GPS results while using > > less battery power of the smartphone. > > > I'm maybe a little confused about how to determine if this is working > > and what settings should be on/off. In particular, when using a BT > > GPS device, what should my Settings read? : Location: Use GPS > > Satellites [Unchecked | Checked] - I believe CHECKED. > > > If Unchecked, "no location services are available" > > I checked, I'm not sure its actually using the BT device. ??? > > > DETAILS: > > > BT-GPS-37BB94 > > Paired on Android, 2.3.4 (Nexus One) > > > I followed these instructions: > > * enable Settings/Applications/Unknown sources, > > * enable Settings/Applications/Development/Allow mock locations, > > * download and install the apk. > > > Downloaded the apk - see : > >http://forum.xda-developers.com/showthread.php?t=833094 > >http://sourceforge.net/projects/bluegps4droid/files/ > > http://sourceforge.net/projects/bluegps4droid/files/Apk/BlueGPS4Droid... > > > > > In the BlueGPS4 app: > > Start/Stop GPS: [Bluetooth GPS is On] > > SiRF GPS : [Use SiRF options] > > Location Provider options: "Bluetooth GPS will replace internal GPS > > > This last sentence has me thinking that with "GPS turned on" at the > > Android device level, that the external GPS will do the actual > > work. > > > Test 1: > > Enable BT GPS, place 8 meters away with view of sky > > Use ODK inside, attempt record location > > 9 meters accuracy within 20 seconds > > > Test 2: > > Disable BT GPS > > Use ODK inside > > Attempt record location--> Compass symbol appears > > No response after 180 seconds, end > > > Test 3: > > Disable BT GPS > > Use ODK outside > > Attempt record location --> Compass symbol appears in top display > > Reponse within 40 seconds @ 18 meters accuracy > > 6.71 meters accuracy after another 30-40 seconds > > Accuracy varying up and down over the next 120 seconds > > No better than 6.71 m > > > Test 4: > > Enable BT GPS, use with partial sky view > > Use ODK inside nearby > > Attempt record location in ODK --> no symbol appears in top display > > tray > > Accuracy of 9meters within 45 seconds > > > Are there other tests to do? > > > On May 26, 1:58 pm, Chris Buddenhagen wrote: > >> Thanks I'd like to hear more from anyone else. > > >> Especially as to accuracy of different models. > > >> Chris Buddenhagen > > >> On Thu, May 26, 2011 at 12:40 PM, Joy Buolamwini > >> > I get about within 17 meters inside my house in the States. I will be > >> > testing in Ethiopia later this week, so I can give a more field based > report > >> > at that time. Doesn't seem to drain the battery any faster/in fact it > seems > >> > to be saving the battery of the tablet we are using.since it isn;t > using the > >> > internal gps. > > >> > Attached is the apk for the gps bluetooth app. Turn on bluetooth and > >> > connect to the receiver first through android settings, and make sure > the > >> > tablet's gps is enabled. > >> > All the settings in bluegps seem to have no effect; they all seem to > work. > >> > If you have an error, charge the battery, or reconnect the bluetooth. > > >> > On Thu, May 26, 2011 at 12:28 PM, Chris Buddenhagen < cbuddenha...@gmail.com> wrote: > > >> >> Is it also more accurate? Which GPS data logger did you choose? > > >> >> Does it drain the battery faster? > > >> >> Thanks for responding > > >> >> Chris Buddenhagen > >> >> On May 26, 2011 12:19 PM, "Joy Buolamwini" wrote: > >> >> > Also using the Bluetooth GPS app and getting excellent results with > >> >> Globalsat > >> >> > BT-359 - GPS receiver modulewhich has given us nearly 24hrs worth > of > >> >> use > > >> >> > before recharging! > > >> >> > Joy > > >> >> > On Thu, May 26, 2011 at 11:59 AM, Steve < stevenpbach...@googlemail.com wrote: > > >> >> >> Yes, this works really well. We are using Bluetooth GPS provider > from > >> >> >> app market and connecting to external GPS data logger. Great for > >> >> >> remote areas. > > >> >> >> Steve > > >> >> >> -- > >> >> >> Post: opendatakit@googlegroups.com > >> >> >> Unsubscribe: opendatakit+unsubscribe@googlegroups.com > >> >> >> Options:http://groups.google.com/group/opendatakit?hl=en > > >> >> > -- > >> >> > Post: opendatakit@googlegroups.com > >> >> > Unsubscribe: opendatakit+unsubscribe@googlegroups.com > >> >> > Options:http://groups.google.com/group/opendatakit?hl=en > > >> >> -- > >> >> Post: opendatakit@googlegroups.com > >> >> Unsubscribe: opendatakit+unsubscribe@googlegroups.com > >> >> Options:http://groups.google.com/group/opendatakit?hl=en > > >> > -- > >> > Post: opendatakit@googlegroups.com > >> > Unsubscribe: opendatakit+unsubscribe@googlegroups.com > >> > Options:http://groups.google.com/group/opendatakit?hl=en > > > -- > > Post: opendatakit@googlegroups.com > > Unsubscribe: opendatakit+unsubscribe@googlegroups.com > > Options:http://groups.google.com/group/opendatakit?hl=enhow do you know your accuracy is 1m in google maps? are you judging by
the blue circle? i'd be interested to see what gps status
(https://market.android.com/details?id=com.eclipsim.gpsstatus2&hl=en)
says.
···
On Sun, Jul 17, 2011 at 16:15, jpd wrote: > ODK-devs: The accuracy I'm getting in ODK is not as advertised for > the BlueTooth device, as I am getting only 9 meters accuracy in ODK > and I should be getting in the range of 1-5 meters, AND, when I look > at the accuracy in google maps, it appears to be within 1-3 meters as > I walk along the sidewalk. I wonder if there is an issue there?Yaw - Correct. I was eyeballing it, I should know better. 
The GPS Status app is giving me the same 9 meter accuracy. So,
either the BlueTooth device specs are wrong or something in between
the Android location API and the BT device is reducing accuracy. I
guess I should take that up with the creator of the BlueGPS app. maker
or perhaps with the device manufacterer. BTW Turning SiRF on or off
via the BlueGPS app doesn't seem to impact the accuracy, so I'm
guessing its at the level of the app or api.
- James