Re: Fan etc on external i2c-controller

Hi,

thank you very much for your detailed informations!

That works just perfect.

Now I would like to use it in Marlin. There is already a function called "Extruder Auto Cooling Fan" which I would like to use.

If Iam right, I have to define the pin like

#define E0_AUTO_FAN_PIN 100

So now I have to connect the "Pin 100" with the upper code you posted, to let Marlin switch the Extruder cooling Fan on and off.
And this has to be an if-else-combination to use the whole "switch-on" or "switch-off"-Code ... right?

But where should I integrate the custom code so that it doesn't slow down the printer?

best regards