<div dir="ltr"><div class="gmail_quote"><div dir="ltr" class="gmail_attr"><br></div><div dir="ltr"><span style="color:rgb(15,17,17);font-family:"Amazon Ember",Arial,sans-serif;font-size:14px">Kumar,</span><br><div><span style="color:rgb(15,17,17);font-family:"Amazon Ember",Arial,sans-serif;font-size:14px"> The </span> NUCLEO <span style="color:rgb(15,17,17);font-family:"Amazon Ember",Arial,sans-serif;font-size:14px">STM32L476RG looks like a very nice board (M4-cortex, 1M Flash, 80 MHz clock, 16 timers, 5 UARTS, CAN, multiple I2C and SPI, Single Wire, etc...). As Chris said, with motor drivers and sensors you should be able to build a powerful robot. The problem I always have is breaking the pins out with enough power and ground pins for all the non-NUCLEO stuff. It helps that the Nucleo form factor includes an Arduino UNO pin footprint. This allows the use of an Arduino UNO sensor shield, like this </span><a href="https://smile.amazon.com/dp/B01MXRXCAW?psc=1&ref=ppx_yo2_dt_b_product_details" target="_blank">https://smile.amazon.com/dp/B01MXRXCAW?psc=1&ref=ppx_yo2_dt_b_product_details</a>.<span style="color:rgb(15,17,17);font-family:"Amazon Ember",Arial,sans-serif;font-size:14px"> This shield doesn't break out all the pins, but does provide plenty of power and ground pins that can be used with the ones it breaks out, with some for the pins that are not broken out. It is also very cheap. An alternative is a board laid out by club member Ron Grant. Ron's board requires some more work on your part, but breaks out all the pins. It is much larger than the UNO sensor shield, but has some nice features. It may require having it built at a PCB company.</span></div><div><span style="color:rgb(15,17,17);font-family:"Amazon Ember",Arial,sans-serif;font-size:14px"><br></span></div><div><span style="color:rgb(15,17,17);font-family:"Amazon Ember",Arial,sans-serif;font-size:14px"> I recommend using the Arduino UNO sensor board to start out. It is cheap and can be obtained quickly. </span></div><div><span style="color:rgb(15,17,17);font-family:"Amazon Ember",Arial,sans-serif;font-size:14px"><br></span></div><div><span style="color:rgb(15,17,17);font-family:"Amazon Ember",Arial,sans-serif;font-size:14px">Regards,</span></div><div><span style="color:rgb(15,17,17);font-family:"Amazon Ember",Arial,sans-serif;font-size:14px">Doug P.</span></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Oct 20, 2021 at 11:05 PM Thalanayar Muthukumar via DPRGlist <<a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>So far, in the past few months, I have been building Arduino or RPi based robots.</div><div>I decided next, to use the STM32 and ordered a NUCLEO <span style="color:rgb(15,17,17);font-family:"Amazon Ember",Arial,sans-serif;font-size:14px">STM32L476RG Kit.</span></div><div><span style="color:rgb(15,17,17);font-family:"Amazon Ember",Arial,sans-serif;font-size:14px"><br></span></div><div><font color="#0f1111" face="Amazon Ember, Arial, sans-serif"><span style="font-size:14px">Need suggestions for expansion boards that can help me build a robot.</span></font></div><div><font color="#0f1111" face="Amazon Ember, Arial, sans-serif"><span style="font-size:14px">I see many Arduino shields and Pi Hats, but could not locate the right expansion board. </span></font></div><div><font color="#0f1111" face="Amazon Ember, Arial, sans-serif"><span style="font-size:14px"><br></span></font></div><div><font color="#0f1111" face="Amazon Ember, Arial, sans-serif"><span style="font-size:14px">Or instead of the NUCLEO kit, should I be looking at other STM32 boards?</span></font></div><div><font color="#0f1111" face="Amazon Ember, Arial, sans-serif"><span style="font-size:14px">I do not want to build a custom board.</span></font></div><div><font color="#0f1111" face="Amazon Ember, Arial, sans-serif"><span style="font-size:14px"><br></span></font></div><div><font color="#0f1111" face="Amazon Ember, Arial, sans-serif"><span style="font-size:14px">Regards.</span></font></div><div><font color="#0f1111" face="Amazon Ember, Arial, sans-serif"><span style="font-size:14px">- Kumar</span></font></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Oct 20, 2021 at 3:51 PM <<a href="mailto:dprglist-request@lists.dprg.org" target="_blank">dprglist-request@lists.dprg.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Send DPRGlist mailing list submissions to<br>
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Today's Topics:<br>
<br>
1. Re: rtk2go (Karim Virani)<br>
2. Thought this was a cool idea.... (<a href="mailto:pulcher@killercomputing.com" target="_blank">pulcher@killercomputing.com</a>)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Tue, 19 Oct 2021 19:13:35 -0500<br>
From: Karim Virani <<a href="mailto:pondersome64@gmail.com" target="_blank">pondersome64@gmail.com</a>><br>
To: Thalanayar Muthukumar <<a href="mailto:tnkumar@gmail.com" target="_blank">tnkumar@gmail.com</a>><br>
Cc: Iron Reign <<a href="mailto:ironreignrobotics@gmail.com" target="_blank">ironreignrobotics@gmail.com</a>>, DPRG<br>
<<a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a>><br>
Subject: Re: [Dprglist] rtk2go<br>
Message-ID:<br>
<<a href="mailto:CAKtnkiz_dD81o3A9L88q2EwV7xzUbVoD2FaSLGuCa4HKhhAFjQ@mail.gmail.com" target="_blank">CAKtnkiz_dD81o3A9L88q2EwV7xzUbVoD2FaSLGuCa4HKhhAFjQ@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Yup. It's not a light decision to go down the road to high precision GPS.<br>
The required commitment in time is even more than the 10X dollar cost.<br>
Gotta have a compelling requirement.<br>
<br>
On Mon, Oct 18, 2021 at 6:06 PM Thalanayar Muthukumar <<a href="mailto:tnkumar@gmail.com" target="_blank">tnkumar@gmail.com</a>><br>
wrote:<br>
<br>
> uBlox F9P is ~275$. I cannot afford it at this point of time.<br>
><br>
> Regards.<br>
> - Kumar<br>
><br>
> On Mon, Oct 18, 2021 at 6:05 PM Thalanayar Muthukumar <<a href="mailto:tnkumar@gmail.com" target="_blank">tnkumar@gmail.com</a>><br>
> wrote:<br>
><br>
>> Thanks @IronReign ... I will check out ublox F9P.<br>
>><br>
>> Regards.<br>
>> - Kumar<br>
>><br>
>> On Mon, Oct 18, 2021 at 4:00 PM Iron Reign <<a href="mailto:ironreignrobotics@gmail.com" target="_blank">ironreignrobotics@gmail.com</a>><br>
>> wrote:<br>
>><br>
>>> Kumar,<br>
>>><br>
>>> Looks like that receiver supports multiple constellations, which is<br>
>>> nice, but I'm pretty sure it won't have any RTK features, so you're looking<br>
>>> at your normal 2-3 meter accuracy range. RTK receivers are significantly<br>
>>> more expensive and you'll also need to invest in a matching antenna.<br>
>>> There's a section of my notes the ublox F9P which is the module I'm using.<br>
>>><br>
>>> On Mon, Oct 18, 2021 at 3:19 PM Thalanayar Muthukumar via DPRGlist <<br>
>>> <a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a>> wrote:<br>
>>><br>
>>>> I am considering adding (<a href="https://www.adafruit.com/product/4415" rel="noreferrer" target="_blank">https://www.adafruit.com/product/4415</a>) to my<br>
>>>> rover.<br>
>>>><br>
>>>> Regards.<br>
>>>> - Kumar<br>
>>>><br>
>>>> On Mon, Oct 18, 2021 at 1:57 PM Thalanayar Muthukumar <<br>
>>>> <a href="mailto:tnkumar@gmail.com" target="_blank">tnkumar@gmail.com</a>> wrote:<br>
>>>><br>
>>>>> Thanks Karim for the fairly detailed succinct :-) answer. Really<br>
>>>>> appreciate it.<br>
>>>>> I have downloaded your notes, but have yet to read it.<br>
>>>>><br>
>>>>> As a person who plans to take my rover outdoors,and I plan to have<br>
>>>>> internet access on my rover, it seems I should<br>
>>>>> connect to a NTRIP server at <a href="http://rtk2go.com" rel="noreferrer" target="_blank">rtk2go.com</a> (I live in Allen, TX) and by<br>
>>>>> doing so, I can get higher accuracy.<br>
>>>>><br>
>>>>> Your email was very helpful, Karim. Thanks.<br>
>>>>><br>
>>>>> Regards.<br>
>>>>> - Kumar<br>
>>>>><br>
>>>>> On Mon, Oct 18, 2021 at 12:04 PM Karim Virani <<a href="mailto:pondersome64@gmail.com" target="_blank">pondersome64@gmail.com</a>><br>
>>>>> wrote:<br>
>>>>><br>
>>>>>> That's a big topic and it bleeds into everything RTK very quickly. So<br>
>>>>>> I'll try for an almost succinct answer that should provide search terms for<br>
>>>>>> learning more:<br>
>>>>>><br>
>>>>>> RTK gps rovers require a live timing reference from another specialty<br>
>>>>>> GPS receiver with a well-known location known as a base station or mount<br>
>>>>>> point. The base station needs to be somewhat close to the rover's location<br>
>>>>>> - ideally within 10km, but "long baseline" trials indicate you can get good<br>
>>>>>> solutions out to and beyond 50km depending on geography. The data coming<br>
>>>>>> from the base station is usually formatted as RTCM messages but can be<br>
>>>>>> transferred over any link. Often in very remote locations you have to set<br>
>>>>>> up your own base station and you might use a point-to-point radio link to<br>
>>>>>> communicate between rover and base station.<br>
>>>>>><br>
>>>>>> There are also private, commercial and governmental networks of these<br>
>>>>>> correcting base stations. The private ones are usually monetizing their own<br>
>>>>>> and governmental base stations. These tend to be pricey services from the<br>
>>>>>> traditional hobby robotics viewpoint - they are focused on the survey and<br>
>>>>>> agricultural markets. There is a very large free governmental network (<br>
>>>>>> <a href="http://unavco.org" rel="noreferrer" target="_blank">unavco.org</a>) that serves active fault and mountain areas but that's<br>
>>>>>> mostly on the west coast and the rockies. Texas has a free non-real time<br>
>>>>>> network which can help with post-processing to get a good base-station<br>
>>>>>> fix, but doesn't help with RTK. NASA operates another fairly open network,<br>
>>>>>> but it requires getting an account and authorizing - and I didn't want to<br>
>>>>>> write the authentication code for my robot.<br>
>>>>>><br>
>>>>>> If you have internet access on your rover, one of the ways to get<br>
>>>>>> RTCM messages is from an NTRIP server. So many of those commercial and<br>
>>>>>> government networks operate NTRIP servers. The leading implementation of<br>
>>>>>> NTRIP is called SNIP and the company that makes SNIP also supports a<br>
>>>>>> voluntary NTRIP server for people who want to publish their base stations -<br>
>>>>>> known as "mount points" in NTRIP/SNIP land. That network is available at<br>
>>>>>> <a href="http://rtk2go.com" rel="noreferrer" target="_blank">rtk2go.com</a> It's completely free and requires no authentication to<br>
>>>>>> use as a client.<br>
>>>>>><br>
>>>>>> Anyhow, if you are still reading and still want to learn more, you<br>
>>>>>> can also access my project notes<br>
>>>>>> <<a href="https://docs.google.com/document/d/1S-OwHQL25ngPYy-97KP6jZPA6bVr2L2PiUL6ix_6Dts/edit?usp=sharing" rel="noreferrer" target="_blank">https://docs.google.com/document/d/1S-OwHQL25ngPYy-97KP6jZPA6bVr2L2PiUL6ix_6Dts/edit?usp=sharing</a>>.<br>
>>>>>> These notes are for my outdoor rovers and as source material for videos,<br>
>>>>>> blog articles and presentations I might want to do, so they are a bit<br>
>>>>>> jumbled up. There is a GPS RTK primer that starts on page 16.<br>
>>>>>><br>
>>>>>> -Karim<br>
>>>>>><br>
>>>>>> On Sun, Oct 17, 2021 at 6:44 PM Thalanayar Muthukumar via DPRGlist <<br>
>>>>>> <a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a>> wrote:<br>
>>>>>><br>
>>>>>>> Hi Karim,<br>
>>>>>>><br>
>>>>>>> What is a rtk2go network and how does one use it?<br>
>>>>>>><br>
>>>>>>> Regards.<br>
>>>>>>> - Kumar<br>
>>>>>>><br>
>>>>>>> On Sun, Oct 17, 2021 at 4:09 PM <<a href="mailto:dprglist-request@lists.dprg.org" target="_blank">dprglist-request@lists.dprg.org</a>><br>
>>>>>>> wrote:<br>
>>>>>>><br>
>>>>>>>> Send DPRGlist mailing list submissions to<br>
>>>>>>>> <a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a><br>
>>>>>>>><br>
>>>>>>>> To subscribe or unsubscribe via the World Wide Web, visit<br>
>>>>>>>> <a href="http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org" rel="noreferrer" target="_blank">http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org</a><br>
>>>>>>>> or, via email, send a message with subject or body 'help' to<br>
>>>>>>>> <a href="mailto:dprglist-request@lists.dprg.org" target="_blank">dprglist-request@lists.dprg.org</a><br>
>>>>>>>><br>
>>>>>>>> You can reach the person managing the list at<br>
>>>>>>>> <a href="mailto:dprglist-owner@lists.dprg.org" target="_blank">dprglist-owner@lists.dprg.org</a><br>
>>>>>>>><br>
>>>>>>>> When replying, please edit your Subject line so it is more specific<br>
>>>>>>>> than "Re: Contents of DPRGlist digest..."<br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>> Today's Topics:<br>
>>>>>>>><br>
>>>>>>>> 1. Re: DPRGlist Digest, Vol 61, Issue 15 (Thalanayar Muthukumar)<br>
>>>>>>>> 2. Re: DPRGlist Digest, Vol 61, Issue 15 (pulcher)<br>
>>>>>>>> 3. Free SSD drive at Micro Center Dallas (Thalanayar Muthukumar)<br>
>>>>>>>> 4. Interesting techniques for 'making & decorating' mechetronics<br>
>>>>>>>> (Carl Ott)<br>
>>>>>>>> 5. Re: RTK corrections source in DFW area? (Karim Virani)<br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>> ----------------------------------------------------------------------<br>
>>>>>>>><br>
>>>>>>>> Message: 1<br>
>>>>>>>> Date: Sat, 16 Oct 2021 16:45:47 -0500<br>
>>>>>>>> From: Thalanayar Muthukumar <<a href="mailto:tnkumar@gmail.com" target="_blank">tnkumar@gmail.com</a>><br>
>>>>>>>> To: <a href="mailto:dprglist-request@lists.dprg.org" target="_blank">dprglist-request@lists.dprg.org</a><br>
>>>>>>>> Cc: <a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a><br>
>>>>>>>> Subject: Re: [Dprglist] DPRGlist Digest, Vol 61, Issue 15<br>
>>>>>>>> Message-ID: <<a href="mailto:C6BFCA25-36F9-4F55-8CE3-22C187F8F347@gmail.com" target="_blank">C6BFCA25-36F9-4F55-8CE3-22C187F8F347@gmail.com</a>><br>
>>>>>>>> Content-Type: text/plain; charset=us-ascii<br>
>>>>>>>><br>
>>>>>>>> Micro center Dallas say they are currently sold out<br>
>>>>>>>><br>
>>>>>>>> Sent from my iPhone<br>
>>>>>>>><br>
>>>>>>>> > On Oct 16, 2021, at 4:04 PM, <a href="mailto:dprglist-request@lists.dprg.org" target="_blank">dprglist-request@lists.dprg.org</a><br>
>>>>>>>> wrote:<br>
>>>>>>>> ><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>> ------------------------------<br>
>>>>>>>><br>
>>>>>>>> Message: 2<br>
>>>>>>>> Date: Sat, 16 Oct 2021 17:24:35 -0500<br>
>>>>>>>> From: pulcher <<a href="mailto:pulcher@killercomputing.com" target="_blank">pulcher@killercomputing.com</a>><br>
>>>>>>>> To: Thalanayar Muthukumar <<a href="mailto:tnkumar@gmail.com" target="_blank">tnkumar@gmail.com</a>>,<br>
>>>>>>>> <a href="mailto:dprglist-request@lists.dprg.org" target="_blank">dprglist-request@lists.dprg.org</a><br>
>>>>>>>> Cc: <a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a><br>
>>>>>>>> Subject: Re: [Dprglist] DPRGlist Digest, Vol 61, Issue 15<br>
>>>>>>>> Message-ID:<br>
>>>>>>>> <<a href="mailto:mailman.2.1634503868.1684.dprglist-dprg.org@lists.dprg.org" target="_blank">mailman.2.1634503868.1684.dprglist-dprg.org@lists.dprg.org</a><br>
>>>>>>>> ><br>
>>>>>>>> Content-Type: text/plain; charset="utf-8"<br>
>>>>>>>><br>
>>>>>>>> Wife just picked one up.? 2 minutes ago.HaroldSent from my T-Mobile<br>
>>>>>>>> 4G LTE Device<br>
>>>>>>>> -------- Original message --------From: Thalanayar Muthukumar via<br>
>>>>>>>> DPRGlist <<a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a>> Date: 10/16/21 4:45 PM<br>
>>>>>>>> (GMT-06:00) To: <a href="mailto:dprglist-request@lists.dprg.org" target="_blank">dprglist-request@lists.dprg.org</a> Cc:<br>
>>>>>>>> <a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a> Subject: Re: [Dprglist] DPRGlist Digest,<br>
>>>>>>>> Vol 61, Issue 15 Micro center Dallas say they are currently sold outSent<br>
>>>>>>>> from my iPhone> On Oct 16, 2021, at 4:04 PM,<br>
>>>>>>>> <a href="mailto:dprglist-request@lists.dprg.org" target="_blank">dprglist-request@lists.dprg.org</a> wrote:><br>
>>>>>>>> _______________________________________________DPRGlist mailing<br>
>>>>>>>> listDPRGlist@lists.dprg.orghttp://<br>
>>>>>>>> <a href="http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org" rel="noreferrer" target="_blank">lists.dprg.org/listinfo.cgi/dprglist-dprg.org</a><br>
>>>>>>>> -------------- next part --------------<br>
>>>>>>>> An HTML attachment was scrubbed...<br>
>>>>>>>> URL: <<br>
>>>>>>>> <a href="http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211016/a33a2617/attachment.html" rel="noreferrer" target="_blank">http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211016/a33a2617/attachment.html</a><br>
>>>>>>>> ><br>
>>>>>>>><br>
>>>>>>>> ------------------------------<br>
>>>>>>>><br>
>>>>>>>> Message: 3<br>
>>>>>>>> Date: Sat, 16 Oct 2021 19:13:12 -0500<br>
>>>>>>>> From: Thalanayar Muthukumar <<a href="mailto:tnkumar@gmail.com" target="_blank">tnkumar@gmail.com</a>><br>
>>>>>>>> To: pulcher <<a href="mailto:pulcher@killercomputing.com" target="_blank">pulcher@killercomputing.com</a>><br>
>>>>>>>> Cc: <a href="mailto:dprglist-request@lists.dprg.org" target="_blank">dprglist-request@lists.dprg.org</a>, <a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a><br>
>>>>>>>> Subject: [Dprglist] Free SSD drive at Micro Center Dallas<br>
>>>>>>>> Message-ID: <<a href="mailto:205ADA38-0DFD-4C11-8C29-1DE15791571A@gmail.com" target="_blank">205ADA38-0DFD-4C11-8C29-1DE15791571A@gmail.com</a>><br>
>>>>>>>> Content-Type: text/plain; charset="utf-8"<br>
>>>>>>>><br>
>>>>>>>> I went to the store just now and picked one up as well. Thanks<br>
>>>>>>>> Harold.<br>
>>>>>>>><br>
>>>>>>>> Regards.<br>
>>>>>>>> - Kumar<br>
>>>>>>>><br>
>>>>>>>> Sent from my iPhone<br>
>>>>>>>><br>
>>>>>>>> > On Oct 16, 2021, at 5:24 PM, pulcher <<a href="mailto:pulcher@killercomputing.com" target="_blank">pulcher@killercomputing.com</a>><br>
>>>>>>>> wrote:<br>
>>>>>>>> ><br>
>>>>>>>> > ?<br>
>>>>>>>> > Wife just picked one up. 2 minutes ago.<br>
>>>>>>>> ><br>
>>>>>>>> > Harold<br>
>>>>>>>> ><br>
>>>>>>>> ><br>
>>>>>>>> ><br>
>>>>>>>> > Sent from my T-Mobile 4G LTE Device<br>
>>>>>>>> ><br>
>>>>>>>> ><br>
>>>>>>>> > -------- Original message --------<br>
>>>>>>>> > From: Thalanayar Muthukumar via DPRGlist <<a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a><br>
>>>>>>>> ><br>
>>>>>>>> > Date: 10/16/21 4:45 PM (GMT-06:00)<br>
>>>>>>>> > To: <a href="mailto:dprglist-request@lists.dprg.org" target="_blank">dprglist-request@lists.dprg.org</a><br>
>>>>>>>> > Cc: <a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a><br>
>>>>>>>> > Subject: Re: [Dprglist] DPRGlist Digest, Vol 61, Issue 15<br>
>>>>>>>> ><br>
>>>>>>>> > Micro center Dallas say they are currently sold out<br>
>>>>>>>> ><br>
>>>>>>>> > Sent from my iPhone<br>
>>>>>>>> ><br>
>>>>>>>> > > On Oct 16, 2021, at 4:04 PM, <a href="mailto:dprglist-request@lists.dprg.org" target="_blank">dprglist-request@lists.dprg.org</a><br>
>>>>>>>> wrote:<br>
>>>>>>>> > ><br>
>>>>>>>> > _______________________________________________<br>
>>>>>>>> > DPRGlist mailing list<br>
>>>>>>>> > <a href="mailto:DPRGlist@lists.dprg.org" target="_blank">DPRGlist@lists.dprg.org</a><br>
>>>>>>>> > <a href="http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org" rel="noreferrer" target="_blank">http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org</a><br>
>>>>>>>> -------------- next part --------------<br>
>>>>>>>> An HTML attachment was scrubbed...<br>
>>>>>>>> URL: <<br>
>>>>>>>> <a href="http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211016/a98cdba3/attachment-0001.html" rel="noreferrer" target="_blank">http://lists.dprg.org/pipermail/dprglist-dprg.org/attachments/20211016/a98cdba3/attachment-0001.html</a><br>
>>>>>>>> ><br>
>>>>>>>><br>
>>>>>>>> ------------------------------<br>
>>>>>>>><br>
>>>>>>>> Message: 4<br>
>>>>>>>> Date: Sun, 17 Oct 2021 09:48:21 -0500<br>
>>>>>>>> From: Carl Ott <<a href="mailto:carl.ott.jr@gmail.com" target="_blank">carl.ott.jr@gmail.com</a>><br>
>>>>>>>> To: DPRG D-List <<a href="mailto:dprglist@dprg.org" target="_blank">dprglist@dprg.org</a>><br>
>>>>>>>> Subject: [Dprglist] Interesting techniques for 'making & decorating'<br>
>>>>>>>> mechetronics<br>
>>>>>>>> Message-ID:<br>
>>>>>>>> <<br>
>>>>>>>> <a href="mailto:CA%2BXqQZTVWYVt6B8078wRecqy0JyuD7vEQi2xE9XkQfLd5t5rZQ@mail.gmail.com" target="_blank">CA+XqQZTVWYVt6B8078wRecqy0JyuD7vEQi2xE9XkQfLd5t5rZQ@mail.gmail.com</a>><br>
>>>>>>>> Content-Type: text/plain; charset="utf-8"<br>
>>>>>>>><br>
>>>>>>>> video starts with the final product<br>
>>>>>>>><br>
>>>>>>>> Techniques are pretty interesting.<br>
>>>>>>>> Build time-lapse starts circa 2:20...<br>
>>>>>>>> <a href="https://youtu.be/rSh0x0GagcQ" rel="noreferrer" target="_blank">https://youtu.be/rSh0x0GagcQ</a><br>
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>>>>>>>> ><br>
>>>>>>>><br>
>>>>>>>> ------------------------------<br>
>>>>>>>><br>
>>>>>>>> Message: 5<br>
>>>>>>>> Date: Sun, 17 Oct 2021 15:03:01 -0500<br>
>>>>>>>> From: Karim Virani <<a href="mailto:pondersome64@gmail.com" target="_blank">pondersome64@gmail.com</a>><br>
>>>>>>>> To: Doug Paradis <<a href="mailto:paradug@gmail.com" target="_blank">paradug@gmail.com</a>>, DPRG <<a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a><br>
>>>>>>>> ><br>
>>>>>>>> Cc: Paul Bouchier <<a href="mailto:paul.bouchier@gmail.com" target="_blank">paul.bouchier@gmail.com</a>><br>
>>>>>>>> Subject: Re: [Dprglist] RTK corrections source in DFW area?<br>
>>>>>>>> Message-ID:<br>
>>>>>>>> <CAKtnkiwq82PVV4riXMP=<br>
>>>>>>>> <a href="mailto:5H9zaTnec3-YE5KJz3pH9TDyPZeNtg@mail.gmail.com" target="_blank">5H9zaTnec3-YE5KJz3pH9TDyPZeNtg@mail.gmail.com</a>><br>
>>>>>>>> Content-Type: text/plain; charset="utf-8"<br>
>>>>>>>><br>
>>>>>>>> Hey Paul,<br>
>>>>>>>><br>
>>>>>>>> I've been using the rtk2go network. It's just a voluntary network,<br>
>>>>>>>> so<br>
>>>>>>>> there's no guarantee that the base stations are correct to a known<br>
>>>>>>>> precision, nor is there an uptime guarantee. It's also very sparsely<br>
>>>>>>>> populated in north Texas:<br>
>>>>>>>><br>
>>>>>>>> [image: image.png]<br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>> But I've found the VN1 mount point in Richardson to be very stable<br>
>>>>>>>> and<br>
>>>>>>>> accurate for the last year - though it has had some outages.I've<br>
>>>>>>>> been able<br>
>>>>>>>> to use it up to 35km away and still get an error bar that I can't<br>
>>>>>>>> reliably<br>
>>>>>>>> measure.<br>
>>>>>>>><br>
>>>>>>>> The Arlington mount point also seems stable - it's been there for<br>
>>>>>>>> at least<br>
>>>>>>>> 6 months - but I haven't used it. Others pop up from time to time<br>
>>>>>>>> but<br>
>>>>>>>> haven't lasted long. I've published a base station on rtk2go for<br>
>>>>>>>> short test<br>
>>>>>>>> runs, but have yet to mount my antenna on my roof for a stable<br>
>>>>>>>> offering.<br>
>>>>>>>><br>
>>>>>>>> Best,<br>
>>>>>>>><br>
>>>>>>>> Karim<br>
>>>>>>>><br>
>>>>>>>> On Sun, Oct 17, 2021 at 12:40 PM Doug Paradis <<a href="mailto:paradug@gmail.com" target="_blank">paradug@gmail.com</a>><br>
>>>>>>>> wrote:<br>
>>>>>>>><br>
>>>>>>>> > Paul,<br>
>>>>>>>> > The correct address for the mailing list is<br>
>>>>>>>> <a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a>.<br>
>>>>>>>> > BTW, Karim has been working with GPS RTK and has used several free<br>
>>>>>>>> > correction data stations in the area.<br>
>>>>>>>> > Regards,<br>
>>>>>>>> > Doug P.<br>
>>>>>>>> ><br>
>>>>>>>> > On Sun, Oct 17, 2021 at 12:35 PM Paul Bouchier <<br>
>>>>>>>> <a href="mailto:paul.bouchier@gmail.com" target="_blank">paul.bouchier@gmail.com</a>><br>
>>>>>>>> > wrote:<br>
>>>>>>>> ><br>
>>>>>>>> >> Hi Doug - long time no see.<br>
>>>>>>>> >><br>
>>>>>>>> >> I tried to send the email below to the dprg list. You can see I<br>
>>>>>>>> used the<br>
>>>>>>>> >> address <a href="mailto:dprglist@dprg.org" target="_blank">dprglist@dprg.org</a>, which is what Carl told me to use.<br>
>>>>>>>> It didn't<br>
>>>>>>>> >> go through. Do I have the address wrong? Anything else you can<br>
>>>>>>>> think of?<br>
>>>>>>>> >><br>
>>>>>>>> >> Thanks for any ideas you might have<br>
>>>>>>>> >><br>
>>>>>>>> >> Paul Bouchier<br>
>>>>>>>> >><br>
>>>>>>>> >> ---------- Forwarded message ---------<br>
>>>>>>>> >> From: Paul Bouchier <<a href="mailto:paul.bouchier@gmail.com" target="_blank">paul.bouchier@gmail.com</a>><br>
>>>>>>>> >> Date: Thu, Oct 14, 2021 at 5:24 PM<br>
>>>>>>>> >> Subject: RTK corrections source in DFW area?<br>
>>>>>>>> >> To: <<a href="mailto:dprglist@dprg.org" target="_blank">dprglist@dprg.org</a>><br>
>>>>>>>> >><br>
>>>>>>>> >><br>
>>>>>>>> >> Does anyone know of any free or low-cost stations that provide<br>
>>>>>>>> internet<br>
>>>>>>>> >> access to GPS RTK corrections data for the Dallas/Fort Worth<br>
>>>>>>>> area?<br>
>>>>>>>> >> Apparently TXDOT has NTRIP servers and makes historical data<br>
>>>>>>>> available but<br>
>>>>>>>> >> AFICT doesn't provide live data. Looking for corrections data to<br>
>>>>>>>> feed to an<br>
>>>>>>>> >> RTK receiver so I don't have to set up my own base station.<br>
>>>>>>>> >> Thanks<br>
>>>>>>>> >> Paul<br>
>>>>>>>> >><br>
>>>>>>>> ><br>
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>>>>>>>> ><br>
>>>>>>>><br>
>>>>>>>> ------------------------------<br>
>>>>>>>><br>
>>>>>>>> Subject: Digest Footer<br>
>>>>>>>><br>
>>>>>>>> _______________________________________________<br>
>>>>>>>> DPRGlist mailing list<br>
>>>>>>>> <a href="mailto:DPRGlist@lists.dprg.org" target="_blank">DPRGlist@lists.dprg.org</a><br>
>>>>>>>> <a href="http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org" rel="noreferrer" target="_blank">http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org</a><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>> ------------------------------<br>
>>>>>>>><br>
>>>>>>>> End of DPRGlist Digest, Vol 62, Issue 1<br>
>>>>>>>> ***************************************<br>
>>>>>>>><br>
>>>>>>> _______________________________________________<br>
>>>>>>> DPRGlist mailing list<br>
>>>>>>> <a href="mailto:DPRGlist@lists.dprg.org" target="_blank">DPRGlist@lists.dprg.org</a><br>
>>>>>>> <a href="http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org" rel="noreferrer" target="_blank">http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org</a><br>
>>>>>>><br>
>>>>>> _______________________________________________<br>
>>>> DPRGlist mailing list<br>
>>>> <a href="mailto:DPRGlist@lists.dprg.org" target="_blank">DPRGlist@lists.dprg.org</a><br>
>>>> <a href="http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org" rel="noreferrer" target="_blank">http://lists.dprg.org/listinfo.cgi/dprglist-dprg.org</a><br>
>>>><br>
>>><br>
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<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Wed, 20 Oct 2021 14:51:47 -0500<br>
From: <<a href="mailto:pulcher@killercomputing.com" target="_blank">pulcher@killercomputing.com</a>><br>
To: "'DPRG D-List'" <<a href="mailto:dprglist@dprg.org" target="_blank">dprglist@dprg.org</a>><br>
Subject: [Dprglist] Thought this was a cool idea....<br>
Message-ID: <019f01d7c5eb$eabe1070$c03a3150$@<a href="http://killercomputing.com" rel="noreferrer" target="_blank">killercomputing.com</a>><br>
Content-Type: text/plain; charset="us-ascii"<br>
<br>
No idea of really what to do with it. As you don't generally all the pins<br>
lining up in grouped enough ways...<br>
<br>
<br>
<br>
I haven't really looked at the groupings too hard, so they may be useful.<br>
<br>
<br>
<br>
AmazonSmile: RJ45 GPIO Pinout Breakout Board for Raspberry Pi 1A+ 1B+ 2B 3B<br>
3B+ 3A+ 4B Zero-W : Electronics<br>
<<a href="https://smile.amazon.com/gp/product/B08PZ5H2BP?ref=em_1p_8_im&ref_=pe_37301" rel="noreferrer" target="_blank">https://smile.amazon.com/gp/product/B08PZ5H2BP?ref=em_1p_8_im&ref_=pe_37301</a><br>
40_609534790> <br>
<br>
<br>
<br>
Harold<br>
<br>
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------------------------------<br>
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