New Xbee Modem: XB3-C-GM1-UT-001

That’s a good find.  We haven’t tried one of those with the Mayfly boards yet, but we’ll have to buy one and see what all might be needed to get it to work properly.  Previous Digi boards required our now-discontinued bee adapter board to change the pin assignments and power supply options in order to work with the Mayfly v0.5 boards.   But the latest Mayfly boards give you the ability to change bee header pins and power settings by adjusting various solder jumpers on the back of the Mayfly.  Similar adjustments to the sketch would be needed as well to make sure everything matched up properly.  But we’ll order a few of those Digi modules and do some testing and if it all looks good, we’ll add an example sketch to the library.

According to the product change notification you attached, there shouldn’t need to be any software changes for “transparent” mode, so most of the examples for ModularSensors should still work.

The underlying cellular chipset on the board *has* changed from the ublox SARA R410M to the Telit ME310G1-WW on the global version or the Telit ME310G1-W1 on the low power version. Because the chip changed, any examples you see for using *bypass* mode will no longer work.

Oh interesting, Thanks for sharing,   Sounds like it connected some of the time, showing that it was possible to connect.  I’ve found there are four source of failure – setup to cell tower,  TCP/IP setup, POST ack,   MMW timeout,

I found this  hardware data sheet – but it turns out there is a GM1 and GM2 – GM1 is the low power. I wonder which one you got?. https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/6378/XB3-C-GM2-UT-001.pdf

SUPPLY VOLTAGE 3.3 – 4.3 VDC
AVG TRANSMIT CURRENT (LTE-M) 1.25 A peak, 410 mA average (GM2 modules), 450 mA peak, 200 mA average (GM1 modules)

I was just wondering is the Mayfly 1.1 likely to handle the GM2 peak? though peaks are always a difficult number, as it should specify somewhere the capacitor (or pulse width) needed to handle that peak.

The XB3-C-A2-UT the data sheet .

SUPPLY VOLTAGE Standard Version: 3.3-4.3VDC;
PEAK TRANSMIT CURRENT Standard Version: 550mA;
AVG TRANSMIT CURRENT 235mA

For the low power (GM1) version of fw,

https://hub.digi.com/support/products/digi-xbee/digi-xbee-3-global-lte-mnb-iot/

and found this User Guide (I had to feed a few dragons tasty data on the way there)  https://www.digi.com/resources/documentation/digidocs/PDFs/90002420.pdf

https://www.digi.com/resources/documentation/digidocs/90002420/default.htm#containers/cont_at_cmds.htm?TocPath=AT%2520commands%257C_____0

I have had this recent email for a survey on Digikey,  (pasted below, hope it comes out ~ feel free to click on what you think)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Thank you for taking the time to participate in this survey.

Ron Konezny
President & CEO
Digi
<table border=”0″ cellpadding=”0″ align=”center”>
<tbody>
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<div>What is your overall impression of Digi?</div></td>
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<td>
<table border=”0″ width=”100%” cellspacing=”5″ cellpadding=”0″>
<tbody>
<tr>
<td>Very favorable</td>
</tr>
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<td>Somewhat favorable</td>
</tr>
<tr>
<td>Neither favorable nor unfavorable</td>
</tr>
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<td>Somewhat unfavorable</td>
</tr>
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<td>Very unfavorable</td>
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</tbody>
</table>
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Hello Shannon,

I am with Digi International – I wanted to check in to see if you were able to get our new XBee modules working on the Mayfly.   If you need more information, I can connect you with Tech Support or an FAE who can provide any information you need.

We’re excited to see this XBee application, and we appreciate you working with our products!

Hello,

@bblumenscheid or any other EnviroDIY user who may know, I was wondering if you know whether both the Digi XBee 3 Global (GM2) and the Digi XBee 3 Low-Power (GM1) modems work on the Mayfly 1.1 board in the U.S.? We have the Global GM2 modem and we have not been able to send data to MMW successfully. It uploaded one time but has not worked since with the same sketch used.</p>
Any information would be greatly appreciated!

@caroline@wachusett  I checked with our Technical Support team.   They suggested you review the electrical characteristics
<div class=”x_elementToProof” data-olk-copy-source=”MessageBody”>Can you please send them the following link.</div>
<div class=”x_elementToProof”>https://docs.digi.com/resources/documentation/digidocs/90002420/default.htm#containers/cont_hardware.htm?TocPath=Hardware%257C_____0</div>
<div class=”x_elementToProof”></div>
<div class=”x_elementToProof”>They are looking for electrical info and this section of the manual will be clear.</div>
<div></div>
<div>Also, you need to turn off the 2G Fallback on the modem.

If this doesn’t help let me know and I will connect someone directly to this forum.</div>
<div>
Thanks!</div>
<div>Bob</div>
<div id=”x_appendonsend”></div>
<div class=”x_elementToProof”></div>
<div class=”x_elementToProof”>Note that they will want to have the 2G fall back turned off.</div>

Hello,

Thank you for your quick response Bob! To be honest, I am fairly new to working with the Mayfly boards. I was wondering if anyone at EnviroDIY had any luck with the modems since this was initially posted in September and if so, could direct me to an example sketch to use that turns off the 2G fallback. Or if there is any other sketch that may have worked for you, please let me know.

Hi Shannon,

Thank you for the quick response and I appreciate your help! If you end up finding out anything, please keep me updated.

Hi Shannon,

I was wondering if you had a chance to revisit the Digi modules and if so, did you have any success?

Thank you,

Caroline

No, we’ve been busy with other projects and haven’t had time to do any more testing with the Digi modules.