0 Tuning Posted by Ken Anderson on January 6, 2013 at 10:01am I've looked but can't find an answer.What do I, D and P refer to please? You need to be a member of diydrones to add comments! Join diydrones Email me when people reply – Follow

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For a good explantion google PID controller. The letters stand for proportional, integral, and derivitive. It's a feeback loop controller that "learns" over time.

http://en.wikipedia.org/wiki/PID_controller

Read wikipedia to get an overview of what it is.

P I D terms are values that define the motor behaviure in relation to the input control signal.

P proportional error : The output power is multiplied to this P konstant

I Integral error : The error accumulated over time, reduses steady state error.

D Derivative error, the D is the rate of change value.