How-To: Converting to a RAMPS Controller (Page 2 of 3)

Thanks,  I got the printer put back in it's little alcove, and everything's tidied up real nice, so I don't feel like taking things apart just now, so I'll reflash the firmware.

BTW, the section on the homing retract was no commented out, only the line about diagonal homing.  It looked like this:

#define X_HOME_RETRACT_MM 5
#define Y_HOME_RETRACT_MM 5
#define Z_HOME_RETRACT_MM 1
//#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.

I un-commented  the last line and changed the 1 to a 5 on the Z retract.

I'll flash this in the next few minutes and let you know how it works.

Yeah, they're OK,
19:27:38.786 : x_min: TRIGGERED
19:27:38.786 : x_max: open
19:27:38.786 : y_min: TRIGGERED
19:27:38.786 : y_max: open
19:27:38.790 : z_min: open
19:27:38.790 : z_max: TRIGGERED

The ones that have not switch, are shown as triggered, the others are open because they're not pressed.

Should I put some jumpers on the unused endstop headers?

You need to redefine your unused endstops to -1 in pins.h. It is trying to read the x-min, y-min and z-max endstops (which are not connected physically) and are giving false readings that they are triggered.

Sorry for the stupid question,  the answer may be right in front of me but I am not seeing it.  I've been trying to upgrade from the Sang to Ramps 1.4 and can now (after some basic mistakes like not having all 3 jumpers connected) get fluid motion, but only in one direction.  That is to say x, y, and z will all move towards their home position, but will not move back in the opposite direction.  I thought it may be a problem with how the limit switches are wired and have tried all configurations (no, nc) and the problem persists.  I'm starting to think I may have shorted something on the ramps or Mega boards but thought I would reach out for help before biting the bullet and buying new boards/stepper drivers.  Any help or advice would be much appreciated.
Thanks,
Frank

I know you said you've checked your endstops - but make sure they are reporting the correct 'state' - not just they work. To do this, check with M119 and make sure they say 'open' when the axis is off the limit switches, and 'triggered' when they are on. Make sure as well the MAX/MIN settings are correct in RepetierHost still (RH Printer Settings -> Printer Shape -> Home Pos)

Also as reminded by Hazer - make sure you are marking any unused endstops as disabled in the firmware.

The end stops we're not disabled under pins.h.  I put a -1 after the X and Y min and  Z max to disable.  Seems obvious now, not sure why the other posts didn't sink in.  I guess it's like anything in that you need to put your time in to understand it and make progress.  At any rate, you guys are awesome.  Really appreciate the help!
Frank

thats a good idea.

Hello
I was wondering if anyone could help with an issue. I have flashed the Marlin Beta firmware from here ( the latest one ) to my Ramps 1.4 Sainsmart and am using a new E3d v6 extruder. When I go into Repetier an press heat extruder it only goes to about 55 then stops. If I use PID auto tune via the Gcode enter it heats up and does its thing. But still wont work with the heat extruder button. Also I noticed that the bed temp wasnt showing next to the extruder temp at the bottom.
Thank you for your time.

I have a solidoodle 2 it had a printboard on it going to new   ramps 1.4 q is I got the A4988 drivers will that work? also got oem heat bed that came with sd2 will that work with ramps 1.4? thanks

I got all that done now need some help with 100K NTC thermistor not sure what I have or what settings to use in marlin I got all metal hotend from ebay

im gonna make the jump up to a a ramps 1.4 board. i want to get my sd2 really up to spec. However when it comes to programming i am very poorly qualified. are there any step by steps idiots level guides to things like reading and calibrating vref values?

Hey all.  This is great info. I've heard a lot about how great rumba is, but I have a brand new ramps 1.4 with all the bells and whistles.  aside from a separate heated bed circuit, whats the advantage?  I have a workbench coming, and I was thinking of finally putting the ramps to work.  I may save it for my prusa if the sanguinololu ever fails.  I'd love to get someones opinion one way or the other.  I can  buy the rumba, but I'd love to use the money someplace more productive, like a pair of bulldogs, if the difference isn't that big.