Matt Barney

Hi Sara,

Today I started to shift my workflow to having all dependencies local to a given project as you suggested. I’m wondering whether it’s even necessary to clone the ModularSensors dependencies into the project’s .piolibdeps path? If I create a new PlatformIO project and modify its .ini file to include:

lib_ldf_mode = deep+
lib_ignore =…

[Read more]

The new SIM card from Verizon works! I first did some testing using XCTU, and I can set the Carrier Profile (CP) either to 3-Verizon, or to 0-Auto-detect, and it registers and works successfully. (Not surprisingly, it never registers when CP is set to 2 (AT&T), and I also presume that setting CP=0 in an AT&T-only coverage area would not…[Read more]

Thanks Sara. I managed to get the forbidden list displayed, and cleared. Not certain what I was doing wrong before.

If I remain in the Console and continue querying, the forbidden list will get repopulated after 15-30 seconds. The response is:

+CRSM: 144,0,"130184FFFFFFFFFFFFFFFFFF"

OK

So, assuming that that value decodes to MCC=311 and MNO=480,…[Read more]

More info: It appears that the command is being sent to the modem at every comma; I had been pasting the entire command into the Console window and getting the 3 errors. If I try typing it by hand, as soon as I type this comma: at+crsm=176,

…it immediately returns ERROR.

I’m unable to query the FPLMN list. I did it successfully last week, so not sure what’s up now.

When I issue the command, I get 3 errors:

at+crsm=176,28539,0,0,12ERROR
ERROR
ERROR

I thought that the last time I got it to work, I was in bypass mode and airplane mode. This time, I’ve tried bypass and transparent modes and have tried it in airplane…[Read more]

I understand. I assume that whatever is in the master branch is considered stable and OK to deploy in the field (while keeping in mind all standard caveats to software development and testing 🙂 ).

Thanks Sara, that’s very helpful. -Matt

Thank you Sara! Using my XBee TH board and XCTU, I got my FPLMN list cleared, and am still trying to force a Verizon connection. Nothing yet, but I will keep trying, power cycling, switching to Bypass and back to transparent, etc.

Thanks, Sara; I’ll check out the FPLMN issue and keep trying with a modem at my desk.

What’s the easiest way to send AT commands directly to the modem? Load StreamDebugger on a Mayfly, as described here? https://www.envirodiy.org/topic/trouble-initializing-xbee3-lte-m/#post-12658

I can’t seem to get any response; i.e., nothing gets echoed to the…[Read more]

Re: updating XBee and u-blox firmware, I just noticed the ‘force cell modem update’ checkbox in XCTU defaulted to unchecked. Hadn’t noticed that before… oops. I’ll enable this from now on when updating my modems.

-M

OK, thank you, Sara! Bummer that there’s no clean solution yet for reliable LTE that’s carrier-agnostic. I suppose that’s asking a lot. 🙂

Matt

I also meant to mention that one of the ‘Bug Fixes’ in the XBee release notes indicates that they enabled flow control between the XBee and the u-blox, which hopefully is a good thing.

This is great news! Thank you @srgdamiano and @ckillen!! I’ve begun ordering parts for 9 additional stations and have been fearing that buying another 9 XBee3 LTE-M modems was going to lead us into a world of frustration with failing modems; hopefully this discovery prevents that.

Regarding XBee firmware: Just a week ago, we deployed a batch of…[Read more]

Wow – thanks, all, for the great information!

Because our problem site is relatively inconvenient to access, I think on our (@jlemontu-org ‘s) next visit, he’ll come armed with a number of options. We’ll pick up a Taoglas antenna, as well as bring along a spare Pulse antenna, in case the existing one is compromised. And we can experiment with…[Read more]

Our Mayfly, XBee3, and antenna are inside a Pelican case, so yeah, I was wondering whether that inhibits signal, but I’m really out of my technical depth on these antenna and signal questions. Jake was able to get decent voice service on his Verizon phone at the site, and my understanding is that ModularSensors (or maybe it’s the XBee3’s firmware)…[Read more]

Great – thanks, Beth, we’ll check it out!

Hi Evan, Thanks for your response. I agree with your concerns about the tiny coax cable and the fragile uFL connector. Poking around yesterday, looking at additional options, I was considering adapting uFL to the larger SMA with something like this: https://www.adafruit.com/product/851 and then, if…[Read more]