Don’t know all those modules nor whether the data is correct, but it is my impression that they are mixing “pure” NB-IoT modules (modems, basically, which would require and MCU to control them, which would in turn add power consumption) with full systems like Pycom’s which include both the modem and the MCU (ESP32 in Pycom’s case), so it’s a bit apples and oranges...

You'll might have issue attaching to the network again, in which case you'll have to deinit and try re-attaching. Probably won't be an issue unless you save some state to nvram. I don't understand the other part fully: Are you using all three commands to deinit the LTE modem? I think you only need lte.deinit() or the other two (although I'm looking for a definite answer to this as we speak). What do you estimate to power consumption difference to be? What power consumption/battery life do you need to achieve?

With the latest modem firmware "CATM1-38638" the connection stability has really improved. Also the data rate is better and the module is not putting off nearly as much heat. I would suggest based on my experience the modem update is a requirement.

@robert-hh Hooray! I've got it! Signal wire was broken between pin and GPS. Thanks.

Hi @tanmay07, Could you check the firmware version of the devices? (os.uname()) What code are you running on them? Are you using WiFi, Bluetooth, or LTE?

@dan Is there an alternative for tarfile.open() on pycom modules? import uzlib Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: no module named 'uzlib'

@jadowdl You do not need an expansion board. Almost any USB/UART bridge and a few cables will do. You just have ot take care that the USB/UART bridge can supply 5V while the UART signals are at 3.3v. If you already have a REPL prompt through USB, then you are almost set. The only additional step for upload is to connect P2 to GND and pzsh reset. About Pin numbers, look here:https://docs.pycom.io/chapter/datasheets/development/gpy.html

@xykon Can you list what bands are now supported? I've tried Band 8 using addscanfreq, but the device does not search for a network: CEREG is stuck at 0, "not registered, MT is not currently searching an operator to register to".

@xykon I did that more than a week ago, but didn't get a response (PYCSD-271). I figured my chances would be better on the forum, and it turns out they are ;) . You are welcome to help me here or via the support portal, I have no preference in that respect.

@le_wildfox I'm not very familiar with NB-IoT, but from what I understand, it is quite specifically designed to not offer great throughput or latency, as the priority is low power. The peak rate is between 20 and 250 kbits/s, and latency is counted in seconds... Not sure exactly what you expect to get...

Dear @tanmay07 and @Martinnn, if you feel lucky, you might want to try our custom build just released on [1]. More background about this is available through [2]. Please be aware that when upgrading from a lower firmware version to this custom build based on 1.20.1.r1, you will have to erase your device completely before flashing in order to keep things straight. You will find respective references to this on the forum. Hint: Use pycom-fwtool-cli --port /dev/ttyUSB0 erase_all, see also [3]. With kind regards, Andreas. [1a] https://packages.hiveeyes.org/hiveeyes/foss/pycom/vanilla/GPy-1.20.1.r1-0.6.0-vanilla-dragonfly.tar.gz [1b] https://packages.hiveeyes.org/hiveeyes/foss/pycom/vanilla/FiPy-1.20.1.r1-0.6.0-vanilla-dragonfly.tar.gz [2] https://community.hiveeyes.org/t/investigating-random-core-panics-on-pycom-esp32-devices/2480 [3] https://community.hiveeyes.org/t/installing-the-recent-pycom-firmware-1-20-1-r1-requires-erasing-the-flash-memory-completely/2688

Hey @timh , I have mentioned about the sensor, I am going to use for monitoring and I want to use cellular service, as wifi connection is not available here so not sure about which hardware will be better to use and if I try with GPY then need to know the better way to connect the Private network with GPY which help readings of sensor on AWS cloud And I am new comer to this area so please suggest the tools of AWS cloud which I should use to make this monitoring process display on my smart phone.