Hey! I'm planning to get a keyboard pcb and print the case out.
I'm really interested in the project and i'd love to stick a low energy directly powered 4g modem inside the case once I get my hands on it.
Are you planning to release the flashing and build instructions?
Here's what I found online for the modem.http://www.g7smy.co.uk/2014/08/raspberry-pi-as-a-3g4g-router/https://www.hackster.io/beame-io/how-to-use-an-off-the-shelf-4g-usb-module-with-raspberry-pi-c5c30fhttps://wiki.archlinux.org/index.php/3G_and_GPRS_modems_with_pppd