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Well, setting the profile to ‘1’ might work fine for the long term; I really have no idea.  It just makes me a bit nervous.

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

And @mbarney, WRT buying new parts.. I’m still not happy with the failure rate of the XBee’s, but I don’t have any suggestions for anything better.

The newest firmware update includes the most recent u-blox update.  [L0.0.00.00.05.08 App version 02.04, released 20May19]  It requires using USB direct mode, but if you have the XBee3 TH dev board, it’s painless.  I recommend updating.

There have been big warnings all over the place for the last several versions saying not to use bypass mo…[Read more]

More news:

1. The cutting and soldering of the Mayfly and XBeee adapter mentioned above works great!  I can now programmatically reset the modem if it gets into a non-responsive state.  I’m thinking of ditching my Sleep Mode code and instead doing a Shutdown(SD) and power off via A5 between communications. It may be less error prone and it does u…

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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]

Thanks for asking,

After trying several simpler WiFi and cellular boards with only moderate success for about a year, I moved over to the Particle platform.  With generic ESP8266, adafruit feathers and FONO-feathers I found it hard to get things working dependably.  I found cellular communication particularly difficult. I still use some of the o…[Read more]

One of the things I don’t get is that all of the modules I’m working with are ones that had previously connected fine without the carrier profile set.  Why did they stop?

Grumble, grumble.. I just feel really, really dumb.

In the mean time, while I was stupidly missing the one setting I needed for the XBee3’s, I completely re-wrote TinyGSM to…[Read more]

I opened the stack of XBee3’s that wouldn’t connect and, low and behold, setting CP1 got almost all of them to connect.  I feel like an idiot.  @ckillen, thank you so much for that catch.  ModularSensors will be changed.  I feel really, really dumb.

Interestingly, despite the face that I’m pretty sure there’s better service with Verizon here tha…[Read more]

I cannot believe I didn’t think about this setting!  I am ashamed of myself.  I will test it out.  😮

I’m pretty certain that the CP command that the XBee3 implements is a pass through to the u-blox UMNOPROF (Mobile Network Operator profile) command where setting 1 is “SIM ICCID select.” The operator profile encompasses both settings like the in…[Read more]

Interesting.  Why did you chose the particle?  Have they worked well for you?  I got a few particle boards to tinker with but I haven’t actually even gotten as far as plugging them in.

Cal, that’s an interesting find, thanks for sharing.  I have a couple test boards that I’ve always kept in mode 2 (AT&T) and they’ve never had a problem connecting consistently and instantly.  But we started changing the CP mode on most of our other stations last fall to allow them to connect to Verizon towers as well, and it seems like those a…[Read more]

I had something interesting happen to me last week – a brand new XBee  (with brand new firmware 11415) + brand new SIM card would NOT connect to the tower for days.  In desperation, I changed the Carrier Profile from 0 to 2 (AT&T) and it connected immediately.  After that, I changed the CP back to 0 and it connects fine.

All of my inst…[Read more]

I achieve to reduce the time to 8 seconds (see the code attached). I am storing the data in a Micro SD Card. The sensors will be powered continuously. I am using an Arduino UNO board. I am interesting in take on discrete reading from each sensor. In the code I also include a Melexis infrared thermometers.

Regards, Enrique

That demo sketch is just a sample of how to talk to your sensors, there’s lots of stuff in there that you could trim out if you’re actually trying to collect data at a certain rate.  What type of board are you using?  Are you planning to store the data on a memory card or just print to the computer’s serial monitor?  There’s a 10-second delay on…[Read more]

Could you tell me the lines I need to rewrite to read only my adress. I have 8 sensors with adress from 0 to 7.