[Loadstone] Royaltek rbt-2300

Cearbhall O Meadhra cearbhall.omeadhra at idd.ie
Sun Jan 6 16:58:10 GMT 2008


Hmm, Thanks, that gave me the info all right! It seems as though that may be
the problem. I will try a few more test runs and see if a pattern develops.
Unfortunately, WAAS is not enabled here in Ireland and engos is unproven as
yet. As far as I can see that is the only way the receiver can compensate
for the drift.
 
All the best,
 
 
Cearbhall 
 
"Good design enables - Bad design disables"
 
Tel: 01-2864623 Mob: 087 9922227 Em: cearbhall.omeadhra at projectidd.ie
 

 

-----Original Message-----
From: loadstone-bounces at loadstone-gps.com
[mailto:loadstone-bounces at loadstone-gps.com] On Behalf Of Shawn Kirkpatrick
Sent: 06 January 2008 00:45
To: loadstone at loadstone-gps.com
Subject: Re: [Loadstone] Royaltek rbt-2300

Try looking up gps drift. This happens when you're stationary or moving
slowly. This will cause your position to wander around a bit and causes the
heading spin problem. Unfortunately there's not much we can do about this
programatically, it's up to the receiver to try to handle this problem.

On Sat, 5 Jan 2008, Cearbhall O Meadhra wrote:

> Dear Shawn,
>
> Sorry about the spelling!
>
> I have no particular reason to suspect the Royaltek 2300 as it was so 
> highly praised on the list last November. I do have a second unit of 
> the same model and will give it a try and see if there is any difference.
>
> The idea of the problem being down to "heading spin" sounds right. I 
> cannot find much under a Google search. Would anyone else be able to 
> point me in the right direction on this topic?
>
> All the best,
>
>
> Cearbhall
>
> "Good design enables - Bad design disables"
>
> Tel: 01-2864623 Mob: 087 9922227 Em: cearbhall.omeadhra at projectidd.ie
>
>
> -----Original Message-----
> From: loadstone-bounces at loadstone-gps.com
> [mailto:loadstone-bounces at loadstone-gps.com] On Behalf Of Shawn 
> Kirkpatrick
> Sent: 04 January 2008 23:15
> To: loadstone at loadstone-gps.com
> Subject: Re: [Loadstone] Royaltek rbt-2300
>
> If you suspect the problem is with the receiver then maybe try another 
> receiver and see if you get the same result. This sounds like the 
> common heading spin problem thoe, there's quite a bit of talk of this on
the list.
> Looking at the logs isn't likely to be of much use since there's not 
> much that can be done about this problem. This usually happens at 
> speeds below 3 or 4 kph or so. Some receivers are better at handling 
> this than others. The royaltek rbt2010 was found to be very good but 
> maybe there's something different in your unit's firmware or 
> something. Maybe do a bit of google searching to see if this is a known
issue with that receiver.
> As far as contacting me off list, I don't mean to sound like a dick 
> here but if you look at the from of any message I send you'll get two 
> important bits of information, the correct spelling of my name and my 
> email address. It's all about attention to detail.
>
> On Fri, 4 Jan 2008, Cearbhall O Meadhra wrote:
>
>> Dear Sean,
>>
>> I have run the test twice to date. I have saved both log files. I 
>> have no problem running it once more if you think that would help.
>>
>> With regard to the problem of sending you the files, can you contact 
>> me off-line at the above address and let me know where to send the 
>> files so that you do get them?
>>
>> I like your suggestion of head spin because that is just what it 
>> looks
> like.
>> It is as if the satellites are swinging faster than I can walk and so 
>> track me as moving backwards. How might another test run show what is
> happening?
>>
>> All the best,
>>
>>
>> Cearbhall
>>
>> "Good design enables - Bad design disables"
>>
>> Tel: 01-2864623 Mob: 087 9922227 Em: cearbhall.omeadhra at projectidd.ie
>>
>>
>> -----Original Message-----
>> From: loadstone-bounces at loadstone-gps.com
>> [mailto:loadstone-bounces at loadstone-gps.com] On Behalf Of Shawn 
>> Kirkpatrick
>> Sent: 04 January 2008 08:54
>> To: loadstone at loadstone-gps.com
>> Subject: Re: [Loadstone] Royaltek rbt-2300
>>
>> I'm not sure where that address goes so I don't know if I'll get the 
>> log or not. I'd suggest rerunning the test to see if this result is 
>> just a one off or if it's happening all the time. It sounds like 
>> standard heading spin at low speed to me. The gps signal could have 
>> been affected by any number of things thoe so you'd have to rerun the 
>> test to be sure. You'll want to take in to account things like 
>> weather, the local terain, if the unit has a clear view of the sky 
>> etc. Without knowing what you meant to do it might be quite hard to 
>> spot
> when the log goes wrong.
>> How does this log suggest a way of users entering points? Any user 
>> can mark a point of any kind and upload to the point share.
>>
>> On Fri, 4 Jan 2008, Cearbhall O Meadhra wrote:
>>
>>> Hello, Sean,
>>>
>>> I have now sent the NMAE file to 'enquiries at loadstone-gps.com'. Can 
>>> you let me know if it reaches you OK?
>>>
>>> As you know, I am working on  a system of building POIs in Ireland 
>>> that can be shared on the Loadstone point-share database. All our 
>>> sources of data in Ireland are distributed under licence and so 
>>> points acquired from these sources cannot be uploaded in any useful 
>>> quantity without breach of copyright. The Royaltek log file implies 
>>> a real possibility of each user creating their own points quickly 
>>> and efficiently. For this reason I need to understand what is 
>>> happening when there is an apparent reversal of the GPS co-ordinates 
>>> while in
>> forward motion.
>>>
>>> All the best,
>>>
>>>
>>> Cearbhall
>>>
>>> "Good design enables - Bad design disables"
>>>
>>> Tel: 01-2864623 Mob: 087 9922227 Em: 
>>> cearbhall.omeadhra at projectidd.ie
>>>
>>>
>>> -----Original Message-----
>>> From: loadstone-bounces at loadstone-gps.com
>>> [mailto:loadstone-bounces at loadstone-gps.com] On Behalf Of Cearbhall 
>>> O Meadhra
>>> Sent: 03 January 2008 09:32
>>> To: loadstone at loadstone-gps.com
>>> Subject: Re: [Loadstone] Royaltek rbt-2300 (was Dear Monty, Sean et
>>> al,)
>>>
>>> Hi, Sean, thanks for replying. I will happily send you the log off 
>>> line. I would really value your opinion on the problem.
>>>
>>>
>>> All the best,
>>>
>>>
>>> Cearbhall
>>>
>>> "Good design enables - Bad design disables"
>>>
>>> Tel: 01-2864623 Mob: 087 9922227 Em: 
>>> cearbhall.omeadhra at projectidd.ie
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: loadstone-bounces at loadstone-gps.com
>>> [mailto:loadstone-bounces at loadstone-gps.com] On Behalf Of Shawn 
>>> Kirkpatrick
>>> Sent: 02 January 2008 23:58
>>> To: loadstone at loadstone-gps.com
>>> Subject: Re: [Loadstone] Royaltek rbt-2300 (was Dear Monty, Sean et
>>> al,)
>>>
>>> Without the nmea log it's hard to say what the problem here would be.
>>> It's most likely the standard problem of the heading spinning at low 
>>> speed or maybe a bad area for gps signals?
>>>
>>> On Wed, 2 Jan 2008, Cearbhall O Meadhra wrote:
>>>
>>>> Happy New Year to all on the Loadstone list!
>>>>
>>>> I wonder if anyone from the Loadstone team would like to comment on 
>>>> my query sent on 29th of December?
>>>>
>>>> I have just completed a test run using a brand new Royaltek 2300 
>>>> GPS Receiver and Loadstone v.
>>>> 0.69.OS60. I saved the log file and pulled it into a Loadstone 
>>>> formatted file combining it with four corner points as I walked at 
>>>> something between
>>>> 2.5 and 3.0 mph around a block. I have added orientation to the 
>>>> Loadstone file to show how the Royaltek is reporting the progress.
>>>>
>>>> The result is a dizzying one! It one moment I am progressing along 
>>>> nicely in a northeast direction when suddenly I appear to swing 
>>>> Southeast when I know that I had not turned but had kept on walking
>>> forward.
>>>>
>>>> Could this be due to my walking speed or even to slowing down? Has 
>>>> it anything to do with the satellites?
>>>>
>>>> I would really appreciate hearing your views.
>>>>
>>>> I have cut and pasted the logged data below for your information:
>>>>
>>>> table		point
>>>>
>>>> Name	Time	latitude	longitude	Metres	Orientation
>>>> accuracy	satellites	priority	userid	ID
>>>> Start	154431	531993250	-60988200	1	Southwest
>> 1
>>>> 9	0	39208	1198971241
>>>> Meath out  01	154446	531993183	-60988300	1
>> South
>>>> Southeast	1	9	0	39208	1198971242
>>>> Meath out  02	154501	531993033	-60988233	8
>> Southeast
>>>> 1	9	0	39208	1198971243
>>>> Meath out  03	154516	531992567	-60987300	17
>> South
>>>> Southeast	1	9	0	39208	1198971244
>>>> Meath out  04	154531	531991200	-60986150	13
>> South
>>>> Southeast	1	9	0	39208	1198971245
>>>> Meath out  05	154546	531990083	-60985317	7	East
>>>> Southeast	1	9	0	39208	1198971246
>>>> Meath out  06	154601	531989933	-60984233	4	East
>> 1
>>>> 9	0	39208	1198971247
>>>> Meath out  07	154616	531989933	-60983517	3	East
>> 1
>>>> 9	0	39208	1198971248
>>>> Meath out  08	154631	531989900	-60983017	2
>> Northwest
>>>> 1	9	0	39208	1198971249
>>>> Meath out  09	154646	531990083	-60983250	2
>> Northwest
>>>> 1	9	0	39208	1198971250
>>>> conv 46	154701	531990250	-60983583	1	East
>>> Northeast	1
>>>> 9	0	39208	1198971251
>>>> conv 01	154716	531990283	-60983383	0	East	1
>>> 9
>>>> 0	39208	1198971252
>>>> conv 02	154731	531990283	-60983350	0	West  	1
>>> 9
>>>> 0	39208	1198971253
>>>> conv 03	154746	531990283	-60983450	11	Northeast
>>> 1
>>>> 9	0	39208	1198971254
>>>> conv 04	154801	531990883	-60982083	14	East
>>> Northeast	1
>>>> 9	0	39208	1198971255
>>>> conv 05	154816	531991533	-60980117	12	East	1
>>> 9
>>>> 0	39208	1198971256
>>>> conv 06	154831	531991733	-60978300	18	East
>>> Northeast	1
>>>> 9	0	39208	1198971257
>>>> conv 07	154846	531992383	-60975700	16	East
>>> Northeast	1
>>>> 9	0	39208	1198971258
>>>> conv 08	154901	531993067	-60973433	14	Northeast
>>> 1
>>>> 9	0	39208	1198971259
>>>> conv 09	154916	531993833	-60971600	18	East
>>> Northeast	1
>>>> 9	0	39208	1198971260
>>>> conv 10	154931	531994517	-60969117	17	Northeast
>>> 1
>>>> 9	0	39208	1198971261
>>>> conv 11	154946	531995433	-60967033	12	East
>>> Northeast	1
>>>> 9	0	39208	1198971262
>>>> conv 12	155001	531995933	-60965300	9	Northeast
>>> 1
>>>> 9	0	39208	1198971263
>>>> conv 13	155016	531996617	-60964500	6	East
>>> Northeast	1
>>>> 9	0	39208	1198971264
>>>> strand 51	155031	531996833	-60963650	6	North 	1
>>>> 9	0	39208	1198971265
>>>> Strand 01	155046	531997450	-60963667	11	Northwest
>>>> 1	9	0	39208	1198971266
>>>> Strand 02	155101	531998183	-60964800	3	Northwest
>>>> 1	9	0	39208	1198971267
>>>> Strand 03	155116	531998400	-60965150	11	Southeast
>>>> 1	9	0	39208	1198971268
>>>> Strand 04	155131	531997717	-60963833	8	South
>>>> Southeast	1	9	0	39208	1198971269
>>>> Strand 05	155146	531997033	-60963300	1	East	1
>>>> 9	0	39208	1198971270
>>>> Strand 06	155201	531997033	-60963100	15	West
>>>> Northwest	1	9	0	39208	1198971271
>>>> Strand 07	155216	531997717	-60965050	12	Northwest
>>>> 1	9	0	39208	1198971272
>>>> Strand 08	155231	531998600	-60966133	12	North
>>>> Northwest	1	9	0	39208	1198971273
>>>> Strand 09	155246	531999667	-60966917	20	North
>>>> Northwest	1	9	0	39208	1198971274
>>>> Strand 10	155301	532001350	-60968167	20	North 	1
>>>> 9	0	39208	1198971275
>>>> Strand 11	155316	532003167	-60968783	22	North
>>>> Northwest	1	9	0	39208	1198971276
>>>> Strand 12	155331	532005083	-60969683	6	North
>>>> Northwest	1	9	0	39208	1198971277
>>>> Strand 13	155346	532005583	-60970067	1	North
>>>> Northwest	1	9	0	39208	1198971278
>>>> Strand 14	155401	532005733	-60970150	0	North
>>>> Northwest	1	9	0	39208	1198971279
>>>> Strand 15	155416	532005767	-60970167	2	North 	1
>>>> 9	0	39208	1198971280
>>>> vict 54	155431	532005967	-60970167	1	North 	1
>>> 9
>>>> 0	39208	1198971281
>>>> Vict01	155446	532006117	-60970167	0	Southwest
>>> 1
>>>> 9	0	39208	1198971282
>>>> Vict02	155501	532006067	-60970283	15	Southwest
>>> 1
>>>> 9	0	39208	1198971283
>>>> Vict03	155516	532005233	-60972133	17	West
>>> Southwest	1
>>>> 9	0	39208	1198971284
>>>> Vict04	155531	532004400	-60974433	15	Southwest
>>> 1
>>>> 9	0	39208	1198971285
>>>> Vict05	155546	532003633	-60976350	14	Southwest
>>> 1
>>>> 9	0	39208	1198971286
>>>> Vict06	155601	532002633	-60977833	16	Southwest
>>> 1
>>>> 9	0	39208	1198971287
>>>> Vict07	155616	532001800	-60979883	18	West
>>> Southwest	1
>>>> 9	0	39208	1198971288
>>>> Vict08	155631	532001183	-60982533	18	West
>>> Southwest	1
>>>> 9	0	39208	1198971289
>>>> Vict09	155646	532000317	-60984850	19	Southwest
>>> 1
>>>> 9	0	39208	1198971290
>>>> Vict10	155701	531999250	-60987083	16	West
>>> Southwest	1
>>>> 9	0	39208	1198971291
>>>> Vict11	155716	531998550	-60989200	1	West
>>> Southwest	1
>>>> 9	0	39208	1198971292
>>>> Vict12	155731	531998517	-60989450	1	North 	1
>>> 9
>>>> 0	39208	1198971293
>>>> Vict13	155746	531998667	-60989467	0	North
>>> Northeast	1
>>>> 9	0	39208	1198971294
>>>> Vict14	155801	531998750	-60989417	8	Southwest
>>> 1
>>>> 9	0	39208	1198971295
>>>> Vict15	155816	531998250	-60990467	13	South
>>> Southeast	1
>>>> 9	0	39208	1198971296
>>>> v/meath 57	155831	531997150	-60989683	17	South
>>>> Southeast	1	9	0	39208	1198971297
>>>> Ret Meath 01	155846	531995700	-60988700	18
> South
>>>> Southeast	1	9	0	39208	1198971298
>>>> Ret Meath 02	155901	531994133	-60987933	7
> South	1
>>>> 9	0	39208	1198971299
>>>> Ret Meath 03	155916	531993450	-60987833	1
> South
>>>> Southeast	1	9	0	39208	1198971300
>>>> Ret Meath 04	155931	531993300	-60987733	5
> North 	1
>>>> 9	0	39208	1198971301
>>>> Ret Meath 05	155946	531993783	-60987700	7
> Southwest
>>>> 1	9	0	39208	1198971302
>>>> Ret Meath 06	160001	531993367	-60988667	6
> South
>>>> Southwest	1	9	0	39208	1198971303
>>>> Ret Meath 07	160016	531992833	-60989000	3	East
>>>> Southeast	1	9	0	39208	1198971304
>>>> ret-gate 59	160031	531992717	-60988467	6	East
>>>> Southeast	1	9	0	39208	1198971305
>>>> entry 0	160046	531992567	-60987600	8	East
>>> Southeast	1
>>>> 9	0	39208	1198971306
>>>> Entry 1	160101	531992233	-60986383	0	Southwest
>>> 1
>>>> 9	0	39208	1198971307
>>>> entry 2	160116	531992183	-60986500	7	West  	1
>>> 9
>>>> 0	39208	1198971308
>>>> fin door 1600  	160131	531992267	-60987583	8	East
>>> 1
>>>> 9	0	39208	1198971309
>>>>
>>>> This starts at my gate and turns South on Meath Road ("meath out" 
>>>> in the
>>>> table)
>>>> Turns down Convent Avenue in an easterly direction ("conv" in the
>>>> table) Back along Strand Road ("Strand" in the table) To the left 
>>>> up Victoria Avenue ("Vict" in the table) and back down Meath Road 
>>>> ("ret Meath" in the table) to my gate and West to the front door.
>>>>
>>>> I only stopped to record the corner points but the log shows that I 
>>>> seem to spin around in the middle of the long runs!
>>>>
>>>> All opinions welcome!
>>>>
>>>> All the best,
>>>>
>>>>
>>>> Cearbhall
>>>>
>>>> "Good design enables - Bad design disables"
>>>>
>>>> Tel: 01-2864623 Mob: 087 9922227 Em:
>>>> cearbhall.omeadhra at projectidd.ie
>>>>
>>>>
>>>>
>>>> _______________________________________________
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>>>> Loadstone at loadstone-gps.com
>>>> http://www.loadstone-gps.com/mailman/listinfo/loadstone
>>>>
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