The only requirement for the "experimental design challenge" is to use the vibration sensor. How are you going to use it? I suppose most (if not everyone) will sample the analog signal, but what are you going to use to sample it? Are you going to use the provided STM32 MCU, a different MCU. a DAQ, or something else?
As of me I still haven't decided yet. I got a NI DAQ, a DMM with sampling capabilities and of course a bunch of MCUs and FPGAs. the NI DAQ is probably the easiest to use, its 200 ksps @ 16 bits. Then my DMM could sample up to 1msps @ 16 bits, but not continuously, or at much higher resolution but also a much slower speed. Then the provided STM32 can sample at up to 3.6 Msps @ 16 bits, (and eventually at higher speed through interleaving) but requires much more effort as it needs to be programmed.