Lost DIR control on X axis Hi, I'm running a prusa mendel with RAMPS 1.4. During a print, my x-axis started acting up amd offset mid-print. Now I no longer have DIR control on my x-axis Pos and Neg move in the same direction. I thought it was the stepper motor controller chip, but it is not I've swapped the chips into various spots. Everything else always works fine and the X axis always has this issue. Everything else on the machine seems to be working correctly. Anyone have any ideas on how to fix this? Thanks! Steve https://reprap.org/forum/read.php?1,309598,309598#msg-309598 Thu, 16 Apr 2026 07:07:56 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,309598,310562#msg-310562 Re: Lost DIR control on X axis https://reprap.org/forum/read.php?1,309598,310562#msg-310562 kscharf General Thu, 13 Feb 2014 15:00:38 -0500 https://reprap.org/forum/read.php?1,309598,309674#msg-309674 Re: Lost DIR control on X axis https://reprap.org/forum/read.php?1,309598,309674#msg-309674 Stevie_j1000 General Tue, 11 Feb 2014 17:59:04 -0500 https://reprap.org/forum/read.php?1,309598,309662#msg-309662 Re: Lost DIR control on X axis https://reprap.org/forum/read.php?1,309598,309662#msg-309662
Im fairly new to electronics, so I'm sure sure of the exact process of probing the pin to find the fail point.
Can you suggest a resouce that might contain those steps?]]> Stevie_j1000 General Tue, 11 Feb 2014 17:37:06 -0500 https://reprap.org/forum/read.php?1,309598,309650#msg-309650 Re: Lost DIR control on X axis https://reprap.org/forum/read.php?1,309598,309650#msg-309650 Greg Frost General Tue, 11 Feb 2014 17:12:02 -0500 https://reprap.org/forum/read.php?1,309598,309646#msg-309646 Re: Lost DIR control on X axis https://reprap.org/forum/read.php?1,309598,309646#msg-309646 Stevie_j1000 General Tue, 11 Feb 2014 16:59:24 -0500 https://reprap.org/forum/read.php?1,309598,309620#msg-309620 Re: Lost DIR control on X axis https://reprap.org/forum/read.php?1,309598,309620#msg-309620 lazzymonk General Tue, 11 Feb 2014 15:27:42 -0500 https://reprap.org/forum/read.php?1,309598,309598#msg-309598 Lost DIR control on X axis https://reprap.org/forum/read.php?1,309598,309598#msg-309598
I'm running a prusa mendel with RAMPS 1.4.

During a print, my x-axis started acting up amd offset mid-print.

Now I no longer have DIR control on my x-axis
Pos and Neg move in the same direction.

I thought it was the stepper motor controller chip, but it is not
I've swapped the chips into various spots. Everything else always works fine and the X axis always has this issue.

Everything else on the machine seems to be working correctly.

Anyone have any ideas on how to fix this?

Thanks!
Steve]]> Stevie_j1000 General Tue, 11 Feb 2014 14:57:49 -0500