Ok, there are a number of threads here about this, but none of them are really helpful. I am in South Korea at the moment and the hologram SIM card does not work here. I do some of my development remotely with partners in the US. The whole hologram stack works ok there, but that is not sufficient for us. I need some connectivity here as well as being able to use an alternative SIM whenever the hologram one does not work.
I can handle losing the hologram cloud infrastructure in the cases that I run a backup SIM. What I want is to use the ublox modem directly when that happens. How do I send AT commands to it from the Arduino enviroment (Is that what Serial1 is connected to)? I understand that the firmware assumes that it has complete control over the ublox, but surely if I never use any of the Dash.() API (Dash.begin() etc…) then there should not be a conflict.
Alternatively, is the firmware source out as promised, maybe together with build instructions?
Thank you for your time.