Having a problem with my stepper motors on my new prusa. When the threaded rods are not connected the motors work great! When I hook up the threaded rods, the motors don't work. I get humming. I'm guessing not enough power some how. ......any suggestions? https://reprap.org/forum/read.php?151,295049,295049#msg-295049 Mon, 16 Mar 2026 13:52:56 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?151,295049,360208#msg-360208 https://reprap.org/forum/read.php?151,295049,360208#msg-360208
Wisar]]> Wisar General Mendel Topics Sun, 25 May 2014 12:29:17 -0400 https://reprap.org/forum/read.php?151,295049,342841#msg-342841 https://reprap.org/forum/read.php?151,295049,342841#msg-342841 waitaki General Mendel Topics Mon, 21 Apr 2014 06:14:33 -0400 https://reprap.org/forum/read.php?151,295049,342447#msg-342447 https://reprap.org/forum/read.php?151,295049,342447#msg-342447 sjerguy General Mendel Topics Sun, 20 Apr 2014 08:51:19 -0400 https://reprap.org/forum/read.php?151,295049,342282#msg-342282 https://reprap.org/forum/read.php?151,295049,342282#msg-342282 ogulsev General Mendel Topics Sat, 19 Apr 2014 18:50:58 -0400 https://reprap.org/forum/read.php?151,295049,342280#msg-342280 https://reprap.org/forum/read.php?151,295049,342280#msg-342280 ogulsev General Mendel Topics Sat, 19 Apr 2014 18:50:11 -0400 https://reprap.org/forum/read.php?151,295049,298732#msg-298732 https://reprap.org/forum/read.php?151,295049,298732#msg-298732
Adjusted the power at the stepper motor driver and is working fine.]]> sjerguy General Mendel Topics Tue, 21 Jan 2014 12:58:45 -0500 https://reprap.org/forum/read.php?151,295049,298706#msg-298706 https://reprap.org/forum/read.php?151,295049,298706#msg-298706 brnrd General Mendel Topics Tue, 21 Jan 2014 12:19:43 -0500 https://reprap.org/forum/read.php?151,295049,295265#msg-295265 https://reprap.org/forum/read.php?151,295049,295265#msg-295265 http://reprap.org/wiki/Pololu_stepper_driver_board

It is possible that your motor current is too low, or, indeed the speed or acceleration too high.]]> msmone General Mendel Topics Wed, 15 Jan 2014 14:50:39 -0500 https://reprap.org/forum/read.php?151,295049,295142#msg-295142 https://reprap.org/forum/read.php?151,295049,295142#msg-295142
//// MOVEMENT SETTINGS
#define NUM_AXIS 4 // The axis order in all axis related arrays is X, Y, Z, E
#define HOMING_FEEDRATE {50*60, 50*60, 4*50, 0} // set the homing speeds (mm/min)

#define DEFAULT_AXIS_STEPS_PER_UNIT {79.46,80.2,4042.8,744.54}// default steps per unit for 12 tooth T5 Belt
#define DEFAULT_MAX_FEEDRATE {500, 500, 5, 45} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {9000,9000,100,3333} // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for skeinforge 40+, for older versions raise them a lot.

#define DEFAULT_ACCELERATION 3000 // X, Y, Z and E max acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION 3000 // X, Y, Z and E max acceleration in mm/s^2 for r retracts

//
#define DEFAULT_XYJERK 20.0 // (mm/sec)
#define DEFAULT_ZJERK 0.4 // (mm/sec)
#define DEFAULT_EJERK 5.0 // (mm/sec)]]> sjerguy General Mendel Topics Wed, 15 Jan 2014 11:24:57 -0500 https://reprap.org/forum/read.php?151,295049,295111#msg-295111 https://reprap.org/forum/read.php?151,295049,295111#msg-295111 lazzymonk General Mendel Topics Wed, 15 Jan 2014 10:32:47 -0500 https://reprap.org/forum/read.php?151,295049,295107#msg-295107 https://reprap.org/forum/read.php?151,295049,295107#msg-295107
I am using Marlin.

I'm asssuming I can program at Marlin?]]> sjerguy General Mendel Topics Wed, 15 Jan 2014 10:21:58 -0500 https://reprap.org/forum/read.php?151,295049,295075#msg-295075 https://reprap.org/forum/read.php?151,295049,295075#msg-295075 lazzymonk General Mendel Topics Wed, 15 Jan 2014 09:04:42 -0500 https://reprap.org/forum/read.php?151,295049,295049#msg-295049 https://reprap.org/forum/read.php?151,295049,295049#msg-295049
When the threaded rods are not connected the motors work great!

When I hook up the threaded rods, the motors don't work. I get humming.

I'm guessing not enough power some how.

......any suggestions?]]> sjerguy General Mendel Topics Wed, 15 Jan 2014 08:03:05 -0500