Motor Only Moves in One Direction! Hello! I'm working on getting my machine up and running using Marlin firmware - but I'm having some problems. The X-axis motor only moves to the left. This is slightly complicated by the fact that I'm using Powerlolu stepper motor drivers I have searched this forum and tried some of the suggestions with no luck so far - I have removed all the endstops and jumped the endstop pins together - sending M119 shows that all the endstops are open I have tried using the RAMPSTestCode.pde (everything lights up but the motor only moves in one direction) I've even switched out my motors and tried a different RAMPs board. Does anyone have any experience with the powerlolu stepper driver? I suspect I'm wiring that incorrectly? UYtqpX8.png mod_embed_images_loadimage('55e0652be08633d7448e4aa9d6810a52', '/forum/thumbcache/353/dc9/38e/6a8/cd7/028/cf7/ad1/fdb/970/78_800x400.png', 'http://i.imgur.com/UYtqpX8.png?1', 'https://reprap.org/forum/addon.php?160,module=embed_images,check_scaling=1,url=http%3A%2F%2Fi.imgur.com%2FUYtqpX8.png%3F1', '', 519000, 800, 400, 'Loading image ...', false); I'm particularly unclear about the circled GND and Voltage - I interpreted that wiring diagram as saying that if I'm using an external power supply (which I am - 24V) then don't use those lines at all Thanks! https://reprap.org/forum/read.php?160,519000,519000#msg-519000 Tue, 21 Apr 2026 21:30:14 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?160,519000,519478#msg-519478 Re: Motor Only Moves in One Direction! https://reprap.org/forum/read.php?160,519000,519478#msg-519478
If you move your motors in a positive direction, can you then move them in the opposite direction back to their starting point - if so then that's normal behavior. If you can't move then back ever, then there is something else that's wroing.]]> jbernardis Stepper Motors, Servo Motors, DC Motors Tue, 09 Jun 2015 15:18:27 -0400 https://reprap.org/forum/read.php?160,519000,519024#msg-519024 Re: Motor Only Moves in One Direction! https://reprap.org/forum/read.php?160,519000,519024#msg-519024 joshuafkon Stepper Motors, Servo Motors, DC Motors Mon, 08 Jun 2015 13:36:08 -0400 https://reprap.org/forum/read.php?160,519000,519023#msg-519023 Re: Motor Only Moves in One Direction! https://reprap.org/forum/read.php?160,519000,519023#msg-519023
Quote
joshuafkon
I'm particularly unclear about the circled GND and Voltage - I interpreted that wiring diagram as saying that if I'm using an external power supply (which I am - 24V) then don't use those lines at all
Thanks!

That is correct.]]> Frans@France Stepper Motors, Servo Motors, DC Motors Mon, 08 Jun 2015 13:28:13 -0400 https://reprap.org/forum/read.php?160,519000,519000#msg-519000 Motor Only Moves in One Direction! https://reprap.org/forum/read.php?160,519000,519000#msg-519000
I'm working on getting my machine up and running using Marlin firmware - but I'm having some problems. The X-axis motor only moves to the left. This is slightly complicated by the fact that I'm using Powerlolu stepper motor drivers

I have searched this forum and tried some of the suggestions with no luck so far -

  • I have removed all the endstops and jumped the endstop pins together - sending M119 shows that all the endstops are open
  • I have tried using the RAMPSTestCode.pde (everything lights up but the motor only moves in one direction)
  • I've even switched out my motors and tried a different RAMPs board.

Does anyone have any experience with the powerlolu stepper driver? I suspect I'm wiring that incorrectly?



I'm particularly unclear about the circled GND and Voltage - I interpreted that wiring diagram as saying that if I'm using an external power supply (which I am - 24V) then don't use those lines at all
Thanks!
]]> joshuafkon Stepper Motors, Servo Motors, DC Motors Mon, 08 Jun 2015 11:52:27 -0400