93_PWMR.pm : alternative PID calculation, usePID=2, implementation from user Albatros_
93_PWMR.pm : alternative PID calculation, usePID=2, implementation from user Albatros_View Changes
Source: 93_PWMR.pm : alternative PID calculation, usePID=2, implementation from user Albatros_ (https://sourceforge.net/p/fhem/code/12773/)