@dexter12 Our application is remote pump management in Australia. Currently using raspberry PIs with usb cell modems. The PI has full python & is a nice platform but usb modem choices are limited. The built in modem on the gpy is a nice idea but the limited repertoire of micropython makes code porting a pain but worth it to have another string to the bow.

@danielm No. I just have development modules.

@jmarcelino What is the right voltage a for that pin? What is the amperage required for the modem?

@BetterAuto Fair enough. I can't add anything to this other than being mindful of power and also providing a dummy load for the antenna. We elected to have programming pins on the pcb we can use - though it means the W01 must be soldered in first of course. I would be interested in hearing how it works for you. Sounds interesting. Kind regards - Richard