Thank you, this is extremely helpful and educational.
There are so many really wonderful solutions, however, without guaranteed component sourcing I’m a little hesitant to commit.
Cheers,
Valentine
EasyEDA-messages reply 
The STSPIN32F0251Q datasheet does not say much about the ADC other then 12bit.
Just stumbled upon that there STspin32G4, it bouts a whopping 4MSPS and it does have a CAN interface
Self-supplied thanks to embedded flexible power management
– VCC buck converter up to 200 mA, with programmable output and embedded MOSFET
– 3.3 V LDO linear regulator up to 150 mA
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Recent component searches at global suppliers for simple components show me lead times of over 80 weeks, up from 40 weeks.
A problem that seems to be reflected at JLCPCB on difficulties in submitting an order whose stock quantity is declared to be less than one reel (~ 3000 pcs)
In short, currently, the time to go from a prototype to the eventual production is going from 1 year to 2 years very recently.
