The intent for this device is to be a functional pocket terminal/phone made with off the shelf parts. I'd also like it to have some interesting features, such as built-in LoRa capabilities, an IR blaster, and GPIO ports for modules. Finally, I'd like a Linux OS over an Android, as I feel I'll use the increased features of Raspbian over Android. That may make for some annoying programming, but I can always dual-boot the device if I really need to.

The core of the device will be an Orange Pi Zero 2 W 4 GB system, which is a lol-worthy Raspberry Pi knockoff. The hope is that 4 GB of RAM will let me use this as an actual pocket terminal, as I know I've had functional laptops with that amount of RAM. Depending on early prototyping results I may ditch this board for an official Raspberry Pi Nano.

The Q20 keyboard device contains a trackball sensor and three soft buttons in addition to the Q10 keyboard keys. This choice was made obviously for the phone buttons and the trackpad. I plan to drive the keyboard with an ATmega328P-PU MCU running qmk firmware.

The graphical display is a 240x320 resolution color LCD. Nothing fancy, but should interface with the Orange Pi fairly easily. This may change radically if the screen is too small (I'm bad with dimensions in my head).

WiFi and Bluetooth will be handled by the Orange Pi board. I've selected a global 4G LTE cat4 modem, which has 150/50 Mbps up and down across all LTE bands (I think?). I also want to include a LoRa transceiver, mostly for show but also to tinker with low power HF applications, as well as a row of GPIO female pins on the top of the device for modular expansions (sensors, radios, etc.). Finally, I'd like to include an IR blaster, again mostly for its own sake but as a handy utility.