[Dprglist] rtk2go

Thalanayar Muthukumar tnkumar at gmail.com
Mon Oct 18 16:06:39 PDT 2021 

uBlox F9P is ~275$. I cannot afford it at this point of time.

Regards.
- Kumar

On Mon, Oct 18, 2021 at 6:05 PM Thalanayar Muthukumar <tnkumar at gmail.com>
wrote:

> Thanks @IronReign ... I will check out ublox F9P.
>
> Regards.
> - Kumar
>
> On Mon, Oct 18, 2021 at 4:00 PM Iron Reign <ironreignrobotics at gmail.com>
> wrote:
>
>> Kumar,
>>
>> Looks like that receiver supports multiple constellations, which is nice,
>> but I'm pretty sure it won't have any RTK features, so you're looking at
>> your normal 2-3 meter accuracy range. RTK receivers are significantly more
>> expensive and you'll also need to invest in a matching antenna. There's a
>> section of my notes the ublox F9P which is the module I'm using.
>>
>> On Mon, Oct 18, 2021 at 3:19 PM Thalanayar Muthukumar via DPRGlist <
>> dprglist at lists.dprg.org> wrote:
>>
>>> I am considering adding (https://www.adafruit.com/product/4415) to my
>>> rover.
>>>
>>> Regards.
>>> - Kumar
>>>
>>> On Mon, Oct 18, 2021 at 1:57 PM Thalanayar Muthukumar <tnkumar at gmail.com>
>>> wrote:
>>>
>>>> Thanks Karim for the fairly detailed succinct :-) answer. Really
>>>> appreciate it.
>>>> I have downloaded your notes, but have yet to read it.
>>>>
>>>> As a person who plans to take my rover outdoors,and I plan to have
>>>> internet access on my rover, it seems I should
>>>> connect to a NTRIP server at rtk2go.com (I live in Allen, TX) and by
>>>> doing so, I can get higher accuracy.
>>>>
>>>> Your email was very helpful, Karim. Thanks.
>>>>
>>>> Regards.
>>>> - Kumar
>>>>
>>>> On Mon, Oct 18, 2021 at 12:04 PM Karim Virani <pondersome64 at gmail.com>
>>>> wrote:
>>>>
>>>>> That's a big topic and it bleeds into everything RTK very quickly. So
>>>>> I'll try for an almost succinct answer that should provide search terms for
>>>>> learning more:
>>>>>
>>>>> RTK gps rovers require a live timing reference from another specialty
>>>>> GPS receiver with a well-known location known as a base station or mount
>>>>> point. The base station needs to be somewhat close to the rover's location
>>>>> - ideally within 10km, but "long baseline" trials indicate you can get good
>>>>> solutions out to and beyond 50km depending on geography. The data coming
>>>>> from the base station is usually formatted as RTCM messages but can be
>>>>> transferred over any link. Often in very remote locations you have to set
>>>>> up your own base station and you might use a point-to-point radio link to
>>>>> communicate between rover and base station.
>>>>>
>>>>> There are also private, commercial and governmental networks of these
>>>>> correcting base stations. The private ones are usually monetizing their own
>>>>> and governmental base stations. These tend to be pricey services from the
>>>>> traditional hobby robotics viewpoint - they are focused on the survey and
>>>>> agricultural markets. There is a very large free governmental network (
>>>>> unavco.org) that serves active fault and mountain areas but that's
>>>>> mostly on the west coast and the rockies. Texas has a free non-real time
>>>>> network which can help with post-processing to get a good base-station
>>>>> fix, but doesn't help with RTK.  NASA operates another fairly open network,
>>>>> but it requires getting an account and authorizing - and I didn't want to
>>>>> write the authentication code for my robot.
>>>>>
>>>>> If you have internet access on your rover, one of the ways to get RTCM
>>>>> messages is from an NTRIP server. So many of those commercial and
>>>>> government networks operate NTRIP servers. The leading implementation of
>>>>> NTRIP is called SNIP and the company that makes SNIP also supports a
>>>>> voluntary NTRIP server for people who want to publish their base stations -
>>>>> known as "mount points" in NTRIP/SNIP land. That network is available at
>>>>> rtk2go.com It's completely free and requires no authentication to use
>>>>> as a client.
>>>>>
>>>>> Anyhow, if you are still reading and still want to learn more, you can
>>>>> also access my project notes
>>>>> <https://docs.google.com/document/d/1S-OwHQL25ngPYy-97KP6jZPA6bVr2L2PiUL6ix_6Dts/edit?usp=sharing>.
>>>>> These notes are for my outdoor rovers and as source material for videos,
>>>>> blog articles and presentations I might want to do, so they are a bit
>>>>> jumbled up. There is a GPS RTK primer that starts on page 16.
>>>>>
>>>>> -Karim
>>>>>
>>>>> On Sun, Oct 17, 2021 at 6:44 PM Thalanayar Muthukumar via DPRGlist <
>>>>> dprglist at lists.dprg.org> wrote:
>>>>>
>>>>>> Hi Karim,
>>>>>>
>>>>>> What is a rtk2go network and how does one use it?
>>>>>>
>>>>>> Regards.
>>>>>> - Kumar
>>>>>>
>>>>>> On Sun, Oct 17, 2021 at 4:09 PM <dprglist-request at lists.dprg.org>
>>>>>> wrote:
>>>>>>
>>>>>>> Send DPRGlist mailing list submissions to
>>>>>>>         dprglist at lists.dprg.org
>>>>>>>
>>>>>>> To subscribe or unsubscribe via the World Wide Web, visit
>>>>>>>         http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org
>>>>>>> or, via email, send a message with subject or body 'help' to
>>>>>>>         dprglist-request at lists.dprg.org
>>>>>>>
>>>>>>> You can reach the person managing the list at
>>>>>>>         dprglist-owner at lists.dprg.org
>>>>>>>
>>>>>>> When replying, please edit your Subject line so it is more specific
>>>>>>> than "Re: Contents of DPRGlist digest..."
>>>>>>>
>>>>>>>
>>>>>>> Today's Topics:
>>>>>>>
>>>>>>>    1. Re: DPRGlist Digest, Vol 61, Issue 15 (Thalanayar Muthukumar)
>>>>>>>    2. Re: DPRGlist Digest, Vol 61, Issue 15 (pulcher)
>>>>>>>    3. Free SSD drive at Micro Center Dallas (Thalanayar Muthukumar)
>>>>>>>    4. Interesting techniques for 'making & decorating' mechetronics
>>>>>>>       (Carl Ott)
>>>>>>>    5. Re: RTK corrections source in DFW area? (Karim Virani)
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ----------------------------------------------------------------------
>>>>>>>
>>>>>>> Message: 1
>>>>>>> Date: Sat, 16 Oct 2021 16:45:47 -0500
>>>>>>> From: Thalanayar Muthukumar <tnkumar at gmail.com>
>>>>>>> To: dprglist-request at lists.dprg.org
>>>>>>> Cc: dprglist at lists.dprg.org
>>>>>>> Subject: Re: [Dprglist] DPRGlist Digest, Vol 61, Issue 15
>>>>>>> Message-ID: <C6BFCA25-36F9-4F55-8CE3-22C187F8F347 at gmail.com>
>>>>>>> Content-Type: text/plain; charset=us-ascii
>>>>>>>
>>>>>>> Micro center Dallas say they are currently sold out
>>>>>>>
>>>>>>> Sent from my iPhone
>>>>>>>
>>>>>>> > On Oct 16, 2021, at 4:04 PM, dprglist-request at lists.dprg.org
>>>>>>> wrote:
>>>>>>> >
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------
>>>>>>>
>>>>>>> Message: 2
>>>>>>> Date: Sat, 16 Oct 2021 17:24:35 -0500
>>>>>>> From: pulcher <pulcher at killercomputing.com>
>>>>>>> To: Thalanayar Muthukumar <tnkumar at gmail.com>,
>>>>>>>         dprglist-request at lists.dprg.org
>>>>>>> Cc: dprglist at lists.dprg.org
>>>>>>> Subject: Re: [Dprglist] DPRGlist Digest, Vol 61, Issue 15
>>>>>>> Message-ID:
>>>>>>>         <mailman.2.1634503868.1684.dprglist-dprg.org at lists.dprg.org>
>>>>>>> Content-Type: text/plain; charset="utf-8"
>>>>>>>
>>>>>>> Wife just picked one up.? 2 minutes ago.HaroldSent from my T-Mobile
>>>>>>> 4G LTE Device
>>>>>>> -------- Original message --------From: Thalanayar Muthukumar via
>>>>>>> DPRGlist <dprglist at lists.dprg.org> Date: 10/16/21  4:45 PM
>>>>>>> (GMT-06:00) To: dprglist-request at lists.dprg.org Cc:
>>>>>>> dprglist at lists.dprg.org Subject: Re: [Dprglist] DPRGlist Digest,
>>>>>>> Vol 61, Issue 15 Micro center Dallas say they are currently sold outSent
>>>>>>> from my iPhone> On Oct 16, 2021, at 4:04 PM,
>>>>>>> dprglist-request at lists.dprg.org wrote:>
>>>>>>> _______________________________________________DPRGlist mailing
>>>>>>> listDPRGlist at lists.dprg.orghttp://
>>>>>>> lists.dprg.org/listinfo.cgi/dprglist-dprg.org
>>>>>>> -------------- next part --------------
>>>>>>> An HTML attachment was scrubbed...
>>>>>>> URL: <
>>>>>>> http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211016/a33a2617/attachment.html
>>>>>>> >
>>>>>>>
>>>>>>> ------------------------------
>>>>>>>
>>>>>>> Message: 3
>>>>>>> Date: Sat, 16 Oct 2021 19:13:12 -0500
>>>>>>> From: Thalanayar Muthukumar <tnkumar at gmail.com>
>>>>>>> To: pulcher <pulcher at killercomputing.com>
>>>>>>> Cc: dprglist-request at lists.dprg.org, dprglist at lists.dprg.org
>>>>>>> Subject: [Dprglist] Free SSD drive at Micro Center Dallas
>>>>>>> Message-ID: <205ADA38-0DFD-4C11-8C29-1DE15791571A at gmail.com>
>>>>>>> Content-Type: text/plain; charset="utf-8"
>>>>>>>
>>>>>>> I went to the store just now and picked one up as well. Thanks
>>>>>>> Harold.
>>>>>>>
>>>>>>> Regards.
>>>>>>> - Kumar
>>>>>>>
>>>>>>> Sent from my iPhone
>>>>>>>
>>>>>>> > On Oct 16, 2021, at 5:24 PM, pulcher <pulcher at killercomputing.com>
>>>>>>> wrote:
>>>>>>> >
>>>>>>> > ?
>>>>>>> > Wife just picked one up.  2 minutes ago.
>>>>>>> >
>>>>>>> > Harold
>>>>>>> >
>>>>>>> >
>>>>>>> >
>>>>>>> > Sent from my T-Mobile 4G LTE Device
>>>>>>> >
>>>>>>> >
>>>>>>> > -------- Original message --------
>>>>>>> > From: Thalanayar Muthukumar via DPRGlist <dprglist at lists.dprg.org>
>>>>>>> > Date: 10/16/21 4:45 PM (GMT-06:00)
>>>>>>> > To: dprglist-request at lists.dprg.org
>>>>>>> > Cc: dprglist at lists.dprg.org
>>>>>>> > Subject: Re: [Dprglist] DPRGlist Digest, Vol 61, Issue 15
>>>>>>> >
>>>>>>> > Micro center Dallas say they are currently sold out
>>>>>>> >
>>>>>>> > Sent from my iPhone
>>>>>>> >
>>>>>>> > > On Oct 16, 2021, at 4:04 PM, dprglist-request at lists.dprg.org
>>>>>>> wrote:
>>>>>>> > >
>>>>>>> > _______________________________________________
>>>>>>> > DPRGlist mailing list
>>>>>>> > DPRGlist at lists.dprg.org
>>>>>>> > http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org
>>>>>>> -------------- next part --------------
>>>>>>> An HTML attachment was scrubbed...
>>>>>>> URL: <
>>>>>>> http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211016/a98cdba3/attachment-0001.html
>>>>>>> >
>>>>>>>
>>>>>>> ------------------------------
>>>>>>>
>>>>>>> Message: 4
>>>>>>> Date: Sun, 17 Oct 2021 09:48:21 -0500
>>>>>>> From: Carl Ott <carl.ott.jr at gmail.com>
>>>>>>> To: DPRG D-List <dprglist at dprg.org>
>>>>>>> Subject: [Dprglist] Interesting techniques for 'making & decorating'
>>>>>>>         mechetronics
>>>>>>> Message-ID:
>>>>>>>         <
>>>>>>> CA+XqQZTVWYVt6B8078wRecqy0JyuD7vEQi2xE9XkQfLd5t5rZQ at mail.gmail.com>
>>>>>>> Content-Type: text/plain; charset="utf-8"
>>>>>>>
>>>>>>> video starts with the final product
>>>>>>>
>>>>>>> Techniques are pretty interesting.
>>>>>>> Build time-lapse starts circa 2:20...
>>>>>>> https://youtu.be/rSh0x0GagcQ
>>>>>>> -------------- next part --------------
>>>>>>> An HTML attachment was scrubbed...
>>>>>>> URL: <
>>>>>>> http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211017/75dbebe4/attachment-0001.html
>>>>>>> >
>>>>>>>
>>>>>>> ------------------------------
>>>>>>>
>>>>>>> Message: 5
>>>>>>> Date: Sun, 17 Oct 2021 15:03:01 -0500
>>>>>>> From: Karim Virani <pondersome64 at gmail.com>
>>>>>>> To: Doug Paradis <paradug at gmail.com>, DPRG <dprglist at lists.dprg.org>
>>>>>>> Cc: Paul Bouchier <paul.bouchier at gmail.com>
>>>>>>> Subject: Re: [Dprglist] RTK corrections source in DFW area?
>>>>>>> Message-ID:
>>>>>>>         <CAKtnkiwq82PVV4riXMP=
>>>>>>> 5H9zaTnec3-YE5KJz3pH9TDyPZeNtg at mail.gmail.com>
>>>>>>> Content-Type: text/plain; charset="utf-8"
>>>>>>>
>>>>>>> Hey Paul,
>>>>>>>
>>>>>>> I've been using the rtk2go network. It's just a voluntary network, so
>>>>>>> there's no guarantee that the base stations are correct to a known
>>>>>>> precision, nor is there an uptime guarantee. It's also very sparsely
>>>>>>> populated in north Texas:
>>>>>>>
>>>>>>> [image: image.png]
>>>>>>>
>>>>>>>
>>>>>>> But I've found the VN1 mount point in Richardson to be very stable
>>>>>>> and
>>>>>>> accurate for the last year - though it has had some outages.I've
>>>>>>> been able
>>>>>>> to use it up to 35km away and still get an error bar that I can't
>>>>>>> reliably
>>>>>>> measure.
>>>>>>>
>>>>>>> The Arlington mount point also seems stable - it's been there for at
>>>>>>> least
>>>>>>> 6 months - but I haven't used it. Others pop up from time to time but
>>>>>>> haven't lasted long. I've published a base station on rtk2go for
>>>>>>> short test
>>>>>>> runs, but have yet to mount my antenna on my roof for a stable
>>>>>>> offering.
>>>>>>>
>>>>>>> Best,
>>>>>>>
>>>>>>> Karim
>>>>>>>
>>>>>>> On Sun, Oct 17, 2021 at 12:40 PM Doug Paradis <paradug at gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>> > Paul,
>>>>>>> >      The correct address for the mailing list is
>>>>>>> dprglist at lists.dprg.org.
>>>>>>> > BTW, Karim has been working with GPS RTK and has used several free
>>>>>>> > correction data stations in the area.
>>>>>>> > Regards,
>>>>>>> > Doug P.
>>>>>>> >
>>>>>>> > On Sun, Oct 17, 2021 at 12:35 PM Paul Bouchier <
>>>>>>> paul.bouchier at gmail.com>
>>>>>>> > wrote:
>>>>>>> >
>>>>>>> >> Hi Doug - long time no see.
>>>>>>> >>
>>>>>>> >> I tried to send the email below to the dprg list. You can see I
>>>>>>> used the
>>>>>>> >> address dprglist at dprg.org, which is what Carl told me to use. It
>>>>>>> didn't
>>>>>>> >> go through. Do I have the address wrong? Anything else you can
>>>>>>> think of?
>>>>>>> >>
>>>>>>> >> Thanks for any ideas you might have
>>>>>>> >>
>>>>>>> >> Paul Bouchier
>>>>>>> >>
>>>>>>> >> ---------- Forwarded message ---------
>>>>>>> >> From: Paul Bouchier <paul.bouchier at gmail.com>
>>>>>>> >> Date: Thu, Oct 14, 2021 at 5:24 PM
>>>>>>> >> Subject: RTK corrections source in DFW area?
>>>>>>> >> To: <dprglist at dprg.org>
>>>>>>> >>
>>>>>>> >>
>>>>>>> >> Does anyone know of any free or low-cost stations that provide
>>>>>>> internet
>>>>>>> >> access to GPS RTK corrections data for the Dallas/Fort Worth area?
>>>>>>> >> Apparently TXDOT has NTRIP servers and makes historical data
>>>>>>> available but
>>>>>>> >> AFICT doesn't provide live data. Looking for corrections data to
>>>>>>> feed to an
>>>>>>> >> RTK receiver so I don't have to set up my own base station.
>>>>>>> >> Thanks
>>>>>>> >> Paul
>>>>>>> >>
>>>>>>> >
>>>>>>> -------------- next part --------------
>>>>>>> An HTML attachment was scrubbed...
>>>>>>> URL: <
>>>>>>> http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211017/044594b5/attachment-0001.html
>>>>>>> >
>>>>>>> -------------- next part --------------
>>>>>>> A non-text attachment was scrubbed...
>>>>>>> Name: image.png
>>>>>>> Type: image/png
>>>>>>> Size: 409971 bytes
>>>>>>> Desc: not available
>>>>>>> URL: <
>>>>>>> http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211017/044594b5/attachment-0001.png
>>>>>>> >
>>>>>>>
>>>>>>> ------------------------------
>>>>>>>
>>>>>>> Subject: Digest Footer
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> DPRGlist mailing list
>>>>>>> DPRGlist at lists.dprg.org
>>>>>>> http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------
>>>>>>>
>>>>>>> End of DPRGlist Digest, Vol 62, Issue 1
>>>>>>> ***************************************
>>>>>>>
>>>>>> _______________________________________________
>>>>>> DPRGlist mailing list
>>>>>> DPRGlist at lists.dprg.org
>>>>>> http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org
>>>>>>
>>>>> _______________________________________________
>>> DPRGlist mailing list
>>> DPRGlist at lists.dprg.org
>>> http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org
>>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211018/b63f7c0e/attachment.html>

More information about the DPRGlist mailing list