UI design
I am not a designer BY FAR, but here is a draft svg of a distracted mode (when stopped). So far, it contains a current date/time area, a daytrip summary, and a battery indicator (4 bars, representing 25% charge each).
When it detects movement, it could switch back into "text" or "map" mode (depending on what was chosen previously). if we get the touchscreen going, pressing the daytrip area could also switch back.
button presses so far: long press (>10 sec) for reset/reboot (to avoid having to carry an STLINK and a laptop to start/stop apps ;-)) short presses could either switch view modes or start/stop recording the daytrip.
Feel free to rip apart, improve or ignore. I guess the small number of pixels severely limits how much text we can display at the same time...