For
Espresso Parts Product ID# LM_PIDKIT -
Temperature stability is what the espresso & coffee industry is after.
If manufacturers were to build the ultimate espresso machine, it would
include PID temperature control. Several manufacturers have headed that
direction in the past few years, including but not limited to Synesso and
La Marzooco. The benefit to those of us that tinker with espresso machines
is that we finally have direction based on theory, as well as practice.