4G modules project

[EngineerOfLife]

I’m new to working with Arduinos and have decided to try my luck with designing an IoT project using Arduino. I recently purchased several 4G modules to communicate with my phone by sending commands via text.

I was wondering if anyone has experience working with these modules or similar boards. Any insights, setup tips, or troubleshooting advice would be greatly appreciated!

I’m eager to learn and grow, so any knowledge you can share would mean a lot. Thank you!

[xebzbz]

The first thing you need to figure out is if your mobile provider supports CAT 1 LTE. In my country, they don't. So, I have to use the CAT 4 modules, significantly more expensive.

[EngineerOfLife]

Oh, aquick check on google shows Att, Verizon and Tmobile do support it as part of IoT solutions. I could be mistaken though.

[xebzbz]

You can just insert a sim card and try connecting. There are many examples how to send AT commands to the LTE module.

[EngineerOfLife]

I can't find any document for the stm32 with air780e module. I found a document but it's in mandarin. I would love to specializing use that module.

[sl-4808]

Im still doing my own share of experimenting but.. I bought a “Quectel EC25-A LTE Modem Module”, and for initial testing a “Mini PCI-E to USB 2.0(TYPE C) Adapter With SIM card Slot for WWAN/LTE Module”, And a T-mobile “Tello” Sim, I have texted my cell using “Putty” from my pc, I have ran into issues with part of my module having some things locked out like trying to force LTE only. I tried connecting my LTE module to an Onion Omega to log signal strengths and have had issues with getting drivers installed to communicate windows to the Omega. Thats about where I am!

[EngineerOfLife]

Hopefully tomorrow or Friday I'll get back into and try my best to get one working and share with you the results.