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Configuring firmware to use D8 for hot end. How?

Posted by Duncan McOkiner 
Configuring firmware to use D8 for hot end. How?
April 06, 2017 06:51PM
I have a RAMPS 1.4 and it doesn't seem to be giving power to D9 or D10 for my hot end. I know what's wrong and i need to buy a new board but i read on another forum that it would be possible to use D8 for the hot end by configuring the firmware as i don't need the bed heated and it works just fine. How would i go about doing this until i buy a new board?

Edited 1 time(s). Last edit at 04/06/2017 06:52PM by Duncan McOkiner.
Re: Configuring firmware to use D8 for hot end. How?
April 06, 2017 08:55PM
find the appropriate pins.h files and swap the pin numbers around, re compile and upload.

NB D8 uses the 12v 11amp power plug, so you will power plugged in there.
Re: Configuring firmware to use D8 for hot end. How?
April 06, 2017 09:10PM
i see, thanks a lot for the help.
Re: Configuring firmware to use D8 for hot end. How?
April 06, 2017 11:16PM
Sorry, one more question, i'm new to marlin and 3D printers which pins file do i open and what values do i change? Thanks in advance.
..

Edited 2 time(s). Last edit at 04/06/2017 11:17PM by Duncan McOkiner.
Re: Configuring firmware to use D8 for hot end. How?
April 07, 2017 10:32PM
It depends on what version of marlin your using...

current marlin pins_RAMPS.h

find

#define HEATER_0_PIN RAMPS_D10_PIN

and change to

#define HEATER_0_PIN RAMPS_D8_PIN
Re: Configuring firmware to use D8 for hot end. How?
April 07, 2017 11:03PM
Thank you, i am using the current marlin. I'll check it out.
Re: Configuring firmware to use D8 for hot end. How?
April 07, 2017 11:18PM
I just uploaded the changes and it works great, thank you for the help and quick replies.
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