1 Topic by TickTock

  • TickTock
  • TickTock
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  • Registered: 2014-05-28
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Topic: Spare config jumper location on Filawinder?

I want to experiment with the PID settings on the Filawinder firmware (using the pot to adjust the integral gain coef. dynamically) but want a failsafe to go back to stock settings(0.1,0,0).  I see two jumper locations are used one for 1.75/3mm selection and the other for test mode.  Is there another jumper location pinned out on the filawinder board recommended for additional features like what I am attempting?

2 Reply by IanJohnson

  • IanJohnson
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Re: Spare config jumper location on Filawinder?

The header at the bottom labeled -,A7,5V was included to possibly support filament measurement devices that output readings as voltage. You could plug an additional pot into there directly and read A7 for changing the settings.  The other digital pins on the expansion header are unused, though there might be some legacy code in there attached to D9 for a test routine which you could delete.  Were you thinking of using jumpers to switch between P,I,and D?

You could add the PID values into the serial output function of the troubleshooting mode to make it easier to turn off when you aren't using it.