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assign pin to cooling fan

Posted by rizulthkr 
assign pin to cooling fan
December 21, 2015 06:15AM
how to turn on print cooling fan and assign pin to it. i am using ramps 1.4. What changes should i do in marlin to enable print cooling fan and also for hot end cooling fan.
Re: assign pin to cooling fan
December 21, 2015 07:26AM
The hotend cooling fan should be on all the time, there is no need to control it.
If you are only using one hotend on the RAMPS you can use the second heater FET to control the fan (RAMPS_14_EFB configuration in Marlin).


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
Re: assign pin to cooling fan
December 22, 2015 01:52AM
i tried connecting the second heater but it was not working and the fan is ok
Re: assign pin to cooling fan
December 22, 2015 02:17AM
Quote
rizulthkr
i tried connecting the second heater but it was not working and the fan is ok
Did you modify the firmware accordingly?


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
Re: assign pin to cooling fan
December 23, 2015 05:31AM
I think that's what he's asking for help with, I'd love to know too....
Re: assign pin to cooling fan
December 23, 2015 04:20PM
Maybe there is a misunderstanding. Just choosing "RAMPS_14_EFB" as the board in Marlin should do the trick.
In the current Marlin RC3 line 73 should read like this
  #define MOTHERBOARD BOARD_RAMPS_14_EFB


[www.bonkers.de]
[merlin-hotend.de]
[www.hackerspace-ffm.de]
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