Dave_24's explaination of how to use PID control of PWM

via IRC

link to his page

http://www.vems.hu/wiki/index.php?page=MembersPage%2FDaveBrul

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<Dave24_> NickLaTec: you need to let the pid controller control the valve directly

<Dave24_> no magic afterwards

<NickLaTec> what do you mean no magic afterwards?

<Dave24_> just something like 0x80 + pid output = duty_cycle (0-FF scale)

<Dave24_> pid output is signed

<NickLaTec> yup

<Dave24_> thats it

* Dave_A has joined #avrboard

<Dave24_> than tune the pid to be fast enough

<Dave24_> without being 'jumpy'