While I wait for the front/rear panel cables (expected to ship tomorrow) I've been working on some other parts of the firmware.
In particular, rather than using embedded Linux like most people probably would have, I wanted to keep this bare metal. So I found myself implementing things like a SSH server for bare metal STM32 with no OS (and no dynamic memory allocation).
Currently I'm working on a SNTP client that syncs the STM32 RTC to a network time server. Almost done with the NTP side of things, just have to write the RTC driver.