I'm sure some of you clever folks could do this in your sleep. . . As the title says; I would like to include 2 buttons to forward and reverse the extruder motor. This would be used for loading filament, not printing. I sort-of know the G code commands I need to send. I think I can figure out defining a pair of pins. I'm not quite sure; What pins are free for RAMPS EFB set-up to use and where to access them on the board. Where in Marlin I would need to put an 'IF'-'THEN' type statement and its proper syntax What files I need to modify - pins/ config Maybe this should go in the RAMPS thread. I have searched for similar posts but not found any. I know I can do this jog/ retract thru the LCD controller. (My LCD is in one corner of my cube shaped printer and my Bowden extruder drive is in the opposite. Its a 'race against time' between setting up 'prepare-menu-move axis-1mm-extruder' then going round the back and feeding in the filament while feeling around for the LCD encoder before the LCD menu reverts to the status screen!) I could add an LCD menu shortcut to move extruder, or I could increase the delay before the Status screen reverts but it would be nice for me if there were a couple of buttons close to the extruder motor I could use. Has anyone done similar or any suggestions? (. . . and if that button could accelerate the speed the longer it was pressed - that would be nice, but not essential) Hope you can help. -Alan https://reprap.org/forum/read.php?147,479236,479236#msg-479236 Mon, 20 Apr 2026 14:39:57 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?147,479236,480103#msg-480103 https://reprap.org/forum/read.php?147,479236,480103#msg-480103
Interesting but a bit more complex than I need it.

a]]> alan richard Firmware - experimental, borrowed, and future Fri, 06 Mar 2015 12:08:54 -0500 https://reprap.org/forum/read.php?147,479236,479256#msg-479256 https://reprap.org/forum/read.php?147,479236,479256#msg-479256 this.]]> jbernardis Firmware - experimental, borrowed, and future Wed, 04 Mar 2015 22:21:08 -0500 https://reprap.org/forum/read.php?147,479236,479236#msg-479236 https://reprap.org/forum/read.php?147,479236,479236#msg-479236
As the title says; I would like to include 2 buttons to forward and reverse the extruder motor.

This would be used for loading filament, not printing.

I sort-of know the G code commands I need to send. I think I can figure out defining a pair of pins.

I'm not quite sure;

What pins are free for RAMPS EFB set-up to use and where to access them on the board.
Where in Marlin I would need to put an 'IF'-'THEN' type statement and its proper syntax
What files I need to modify - pins/ config

Maybe this should go in the RAMPS thread. I have searched for similar posts but not found any.

I know I can do this jog/ retract thru the LCD controller.
(My LCD is in one corner of my cube shaped printer and my Bowden extruder drive is in the opposite. Its a 'race against time' between setting up 'prepare-menu-move axis-1mm-extruder' then going round the back and feeding in the filament while feeling around for the LCD encoder before the LCD menu reverts to the status screen!)

I could add an LCD menu shortcut to move extruder, or I could increase the delay before the Status screen reverts but it would be nice for me if there were a couple of buttons close to the extruder motor I could use.

Has anyone done similar or any suggestions?

(. . . and if that button could accelerate the speed the longer it was pressed - that would be nice, but not essential)

Hope you can help.

-Alan]]> alan richard Firmware - experimental, borrowed, and future Wed, 04 Mar 2015 20:45:57 -0500