@misterlisty >>> from network import LTE >>> lte=LTE() >>> print(lte.send_at_cmd('AT!="showver"')) SYSTEM VERSION ============== FIRMWARE VERSION Bootloader0 : 5.1.1.0 [39529] Bootloader1* : 6.0.0.0 [41019] Bootloader2 : 6.0.0.0 [40343] NV Info : 1.1,0,0 Software : 6.0.0.0 [41019] by robot-soft at 2018-12-13 21:41:15 UE : 6.0.0.0 COMPONENTS ZSP0 : 1.0.99-3171 ZSP1 : 1.0.98-3170 OK >>>

@misterlisty The way I understand it (correct me if I am wrong) is, that these are two very different LTE standards. LTE-M draws more current but is able to send data with 1 Mbit/s and 20ms latency whilst NB-IoT operates on 1000 times lower current on bands between 800 MHz-900MHz but can only send data with a lower bandwidth (250 Kbit/s) and a latency of 1s The main thing is availability in your country. Here in Germany only NB-IoT is available and LTE-M would need a whole new buildup of LTE infrastructure, NB-IoT works on the existing LTE network. So i guess you should check first, which standard is available in your country first.

@jcaron Yes, you could make a simple passthrough script between UART0 and UART2 I think. That may however conflict with the normal LTA firmware, and you migth have to use WiPy firmware for the device, which ignores everything besides the ESP32. I do not know wheter is is fast enough, and you have to deal with the complete modem configuration. The physical UART pins to the modem seem accessible on FiPy only. On GPY, TX and RTS are connected internally.

@John-Baird Hi John, interesting comments. Thanks for your input. I gather you are using the deepsleep functionality of the unit. I find that the deepsleep call hangs periodically and needs to be helped along with a kick from the WDT every so often. The actual LTE communications part seems to work quite well once you work out how to drive it. I do find every so often that I get strange failures that are difficult to explain. I would be keen to understand the steps you have taken to achieve an acceptable degree of reliability, as I am sure are others. Do you use in sort of real time control within your application. I have a number of functions that need to happen on a periodic basis (from minutes to hours to days to monthly). I am just trying to get my mind around how I might be able to use the RTC for this. Working out how to initialise it/synchronise it is another challenge. I have a need to toggle an output pin every 2 seconds when my device is asleep. I sleep for 2 minutes at a time, to conserve power. I ended up having to resort to an external circuit to toggle the output as I could not see an easy way to do this with the FiPy. I could have probably used the ULP, but this is a bit beyond me at present.

even I was confused about it. I didn't try it with my chegg free account yet but was planning to try this. But implementation seems little tough.

I have the same issue. Did you manage to fix it?

@JABarrett85 Thanks. Are you using CAT-M1 or NB-IoT? I couldn't tell from Soracom's website which they supported.

@Paul-Thornton Have you found any update/change on Vodafone's rollout in the UK in the last 1 yr? It will be highly appreciate if you share your knowledge on this issue.

@paul-thornton Thanks for your input, the probmlem was that we had connected some sensors on the pins that was shared with LTE.

@arneme Yup. Thats Correct.

@reidfo I've put more time than I would like into the lte here in oz too Steve. Stumbled across some bizarre current draws after modem reset in my battery powered application. On the upside I can now finish an lte connection & get into micropower deepsleep in 3s whereas the disconnect/detach sequence used to take more like 7s. These gems are hard won by those of us who go down these rabbit holes & I'd be happy to share on a wiki. I also think pycom HQ could post some material too, like exactly what lte.init() does for instance.

Hi @kevin, From the Southern of Sweden - via Telia's NB-IOT Network - I get this: >>> send_at_cmd_pretty('AT+SQNHPLMN?') +SQNHPLMN: "23820","23820","23820" OK >>> and for you who would like to look it up: http://www.numberportabilitylookup.com/networks?s=

@robert-hh Can you give an example how to send data using 1nce sim card?