[paulgerhardt]

>Depends on their goals.

I'm in this demographic and am confused why are you selling me on something less capable.

>Considering there are absolutely zero HCCI engines in mass production

This is false and trivially googled.

>You're making it out to be way more important than it is

The parent was requesting a concrete example which quite clearly can not be done on an Arduino but is trivial with an FPGA.