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RUMBA: using second fan for cooling nozzle - MARLIN modification

Posted by flo94 
RUMBA: using second fan for cooling nozzle - MARLIN modification
August 18, 2016 08:00PM
Dear MARLIN-hacker,

i installed a second extruder on my K8200 with RUMBA-board and MARLIN-firmware.
Every extruder has its own fan for the nozzle and so i did connect the second extruder-nozzle-fan to the FAN1 pin of the RUMBA-board.

Is there a possibility to run the second fan like the first nozzle-fan (FAN0)?

And if thats not possible (and i think so):

I want to achieve this:

if(extruder1) // if extruder 1 is switched on or heating or active
{
fan1_speed = fan0_speed; // set both fans to the same speed
}else
{
fan1_speed = 0; // switch FAN1 off
}

How can i implement the code-example above with the right var-names and where do i have to place it? (main?)

Thank you for your answers in advance,
Florian
Re: RUMBA: using second fan for cooling nozzle - MARLIN modification
September 15, 2016 09:09AM
Nobody has an idea how to realize that?
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