<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">I did get the email - thank you! I looked through the info on the second page of the PDF and I have some questions, but it does confirm that there are options for as many as four sensor boards, which fits with what I was considering. <br></div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">I think the box below the I2C table is wrong for the MCP9808; the addresses should be 0x1E and 0x1F per the table, and the callout in the schematic. It also mentions JMP1 in the second column, I think that should be JMP4.<br></div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">I also noted that JMP4 is described as being set only on the local board in most locations, but shown as "Placed" on the remote board in the NORMAL MODE and EXTENDED MODE boxes. <br></div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">I'm curious about whether there's a plan for deploying multiple sensors; one of the notes implies that, without giving any other details. Would it be a star configuration with the Pi at the center, or a daisy-chain using both the RJ45 and J10 for the boards in the middle?</div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">Thanks,</div><div class="gmail_default" style="font-family:verdana,sans-serif">Bill N2RKL<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Oct 2, 2021 at 1:54 PM Julius Madey via TangerineSDR <<a href="mailto:tangerinesdr@lists.tapr.org">tangerinesdr@lists.tapr.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>
<font face="Arial">I answered Bill a few days ago....perhaps he
didn't receive the email. I forwarded the latest schematic and
layout for the board which has a section on setting i2c
addresses. Perhaps Scotty can update that further. <br>
Jules-K2KGJ<br>
<br>
</font><br>
<div>On 10/2/2021 12:00 PM,
<a href="mailto:tangerinesdr-request@lists.tapr.org" target="_blank">tangerinesdr-request@lists.tapr.org</a> wrote:<br>
</div>
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Today's Topics:
1. FW: [HamSCI] Two questions about the new TAPR magnetometer
board (Dr. Nathaniel A. Frissell Ph.D.)
----------------------------------------------------------------------
Message: 1
Date: Fri, 1 Oct 2021 16:22:25 +0000
From: "Dr. Nathaniel A. Frissell Ph.D."
<a href="mailto:nathaniel.frissell@scranton.edu" target="_blank"><nathaniel.frissell@scranton.edu></a>
To: <a href="mailto:tangerinesdr@lists.tapr.org" target="_blank">"tangerinesdr@lists.tapr.org"</a> <a href="mailto:tangerinesdr@lists.tapr.org" target="_blank"><tangerinesdr@lists.tapr.org></a>
Subject: [TangerineSDR] FW: [HamSCI] Two questions about the new TAPR
magnetometer board
Message-ID:
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Hi,
I'm sending these questions from Bill N2RKL to the TangerineSDR list. They were originally posted on the HamSCI list.
73 Nathaniel
From: <a href="mailto:hamsci@googlegroups.com" target="_blank">hamsci@googlegroups.com</a> <a href="mailto:hamsci@googlegroups.com" target="_blank"><hamsci@googlegroups.com></a> On Behalf Of Bill Owens
Sent: Thursday, September 30, 2021 9:22 AM
To: HamSCI <a href="mailto:hamsci@googlegroups.com" target="_blank"><hamsci@googlegroups.com></a>
Subject: [HamSCI] Two questions about the new TAPR magnetometer board
I've listened to the last couple Zoom sessions and also found the layout pictures that Scotty showed a few weeks ago, but I haven't been able to work out answers for two questions:
- How many I2C addresses can be set for the magnetometer and the temperature sensor on each board?
- Are the RM3100 components soldered on the boards, or perhaps on half of them? It looks like there are options for SMT header sockets, and for the components themselves.
Thanks,
Bill N2RKL
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