NB-IoT / Cat-M(eMTC) / GNSS HAT for Raspberry Pi, Globally Applicable (CE08647)

Support Product Questions
22

I struggled with this board so here is some help. I plan to use this with ESP32.
I could not get this board to function on Linux. (Ubuntu). I have dual boot and HAD to use the drivers supplied at the wiki link. I set up Putty and worked via USB. The device manager shows 4 COMS ports updating all to the new driver and using COM19 BAUD rate 115200 as the AT Channel via Putty.
You must use NB-IoT/Cat-M compatible SIM. I used the Hologram ones provided here.
Ensuring antenna, GPS and SIM are installed and the SIM is activated online via Hologram dashboard - connecting to windows hold the power button 2+ seconds to initiate.

Run AT commands. Wait between for response.
AT+CMNB=1
AT+CFUN=0
AT+CFUN=1

Check if registered
AT+CGREG?
Check your signal strength
AT+CSQ
IP Address
AT+CGPADDR=1

Using Hologram you need API key from account->settings-API and your Device Key and Web API Hook Key.

Use bash, python etc to call the Hologram API to send messages and receive via web hooks (and SMS).

https://support.hologram.io/hc/en-us/categories/360002282093-Hologram-Cloud-and-developer-tools

1 Like
23

Hey @sam98380,

Thank you so much for taking the time to share your detailed experience and helpful tips! We really appreciate the clear instructions on setting up the board with the ESP32 and the important notes about the drivers and compatible SIM cards. Your step-by-step guidance and the link to the Hologram API resources are invaluable for anyone struggling with this. Thanks again for contributing this, it’s a big help to the community! :raising_hands: