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D2 connector

Posted by rich1812 
D2 connector
March 01, 2018 10:51AM
hello, in over two years I use the purse i3, I never have the need to use a fan for the RAMP board and the Mega board, so I never pay much attention to it. Now that I am re-wiring from scratch, for completeness sack, I hooked a 12 V fan directly blows at the boards. When I turned the printer on, the fan doesn't do anything. I am wondering under what condition the fan will come on, when the boards get too hot? If that's the case, where can I set the threshold in pronterface and do I need to do anything in the marlin? Thanks

Edited 1 time(s). Last edit at 03/01/2018 10:54AM by rich1812.
Re: D2 connector
March 01, 2018 12:07PM
in GCode:

M107 Snnn

Where nnn is a number from 0 to 255 denoting fan speed

M108

This turns the fan back off.

This is usually under gcode control, in order to use full cooling for things like bridges, but allow the fan to be controlled for other situations.


Prusa i3 / Arduino Mega 2560 / RAMPS 1.4
Kit from a2aprinter
Beltless redesign in progress to move to T8 lead screw drive

MBot3D Printer
Kit from Amazon
Some teething pains, but a reasonably good printer, just missing a heated bed.
Re: D2 connector
March 02, 2018 12:04AM
Correction:
It's M106 Sxxx and M107
Re: D2 connector
March 03, 2018 04:17AM
Thanks for the replies.It works smiling smiley after printing for about abhor, the D2 fan kicks in!

yes, it is indeed M106. At least on my Marlin.

BTW, the tempture graph on the pronterface, UI there are 3 curves, hotted. bed and fan, what does the fan curve for? is it only for display only, since I don't see any button to set the on and off for the fan. Thanks

Edited 2 time(s). Last edit at 03/03/2018 07:10AM by rich1812.
Re: D2 connector
March 06, 2018 08:09AM
My mistake, apologies, and thanks for the correction.


Prusa i3 / Arduino Mega 2560 / RAMPS 1.4
Kit from a2aprinter
Beltless redesign in progress to move to T8 lead screw drive

MBot3D Printer
Kit from Amazon
Some teething pains, but a reasonably good printer, just missing a heated bed.
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