SIM7600G-H 4G HAT For Raspberry Pi, LTE Cat-4 4G / 3G / 2G Support, GNSS Positioning, Global Band

Setup is a bit cryptic, the docs seems like dedicated to the experienced makers not a newbies, but with some GPT or Co-Pilot help if took a day to make it work.

Worth shelling out the extra money for (I know I didn't want to either initially), but the compatibility and tutorials are great, and it works out of the box with python serial communication libraries, so if you don't want to deal with the hat drivers (not that bad tbh), you can be up and running in literal minutes. since I found the texting documentation a bit confusing, for anyone wondering, here is how you send a text over serial: AT+CMGF=1 AT+CMGS="+1[INSERT YOUR NUMBER]" > [here you are prompted by serial to type..] Hello, this is a test message. [CTRL+Z]

J'ai remplacé le Modem LTE4G cat1 USB d'une maquette que j'avais faite avec Openwrt sur rpiB 3+ par le HAT SIM7600G-H de waveshare et ça a fonctionné du premier coup. Le HAT modem est reconnu par Openwrt (a créé un device ppp0) , liaison internet établie avec le provider. Je n'ai pas testé le GPS.

I bought this to use it for an in-car mobile WiFi hotspot, do I need the 4g connectivity. At first it did not connect no matter what I did, I thought it could be a carrier issue? My SIM is on Simple Mobile btw. after a ton of trial and error, I was able to get it working by executing "route add -net 0.0.0.0 usb0". While it did not show it was connected through the UI, I was able to browse and load content. Apparently it's an issue with the network manager on the bookworm based Debian 12 version of Raspbian OS, after switching to the legacy (Debian 11) version of the OS, it seems to work with no issues. So the only things you need to do in order to set it up for 4g Internet is: -download minicom "sudo apt-get install minicom" -make sure Host device is off, insert sim, plug into GPIO headers, plug Device in from the USB (not USB to uart) port to a USB port on the Host device. - start Host device, if the 4g light does not start blinking or turn on, you may need to manually switch the modem on, press and hold the power button for about 5 seconds to turn on manually. -Open terminal, type "minicom -D /dev/ttyUSB2" to connect to the Device. When in minicom, press Ctrl+a then press "e". This turns on echo mode so you can see what you're typing. -Input the command "AT+CUSBPIDSWITCH=9011,1,1", you may need to copy and paste it into the terminal because sometimes it'll be outputting signal commands and interrupt you while you're typing. Also, this command ensures the Linux driver is loaded, if you need this for Windows, you need to change the 9011 to 9001. -set your apn by inputting the command "AT+CGDCONT=1,"IP","wholesale", replace wholesale with whatever your apn for your carrier is. -you should be connected, if not try "route add -net 0.0.0.0 usb0", you'll need to add that to your startup script if that fixes connectivity. If anything gets messed up, you need to dig in and fix it because, as far as I could find, there's no factory reset command. I do recommend you have a little AI assistant ready to help, Gemini was a huge help in me gaining an understanding of the whole serial communication part and diagnosing the connection issues. The online documentation is super helpful and there's a handful of AT commands to help you diagnose if you have any issues. Just search "waveshare 7600" and go to the product page from their website and there's a wiki link toward the very end of the page that leads to the documentation.

I was actually hoping to make my own Raspberry Pi 4 powered cell phone using this product. At first everything seemed great. Ubuntu has the kernel modules already included for this and it was detected right away and I was able to configure the internet connection right in the Ubuntu settings application. Sending AT Commands to do all actions (SMS and Phone Calls) works great as well. However, when trying to do everything at once I run into issues ALL the time. It is not just a AT Commands multiplexing issuing either. The device will get into a bad state where all of a sudden nothing works and requires I fully shutdown the Pi and short the HAT to get it to clear any state. Then when I bring everything back up everything will work for a while again. It is just too bad it can't be reliable enough to make a day to day use cell phone with. Customer support was actually quick to respond although their answer was not all that helpful. I still really appreciated the effort, especially with the quality of my question/message I sent. Maybe they will have some recommendations for how to fix this? I am considering ditching the project altogether or trying SixFab's LTE-M board instead.