I have just built a small CNC milling machine and am having a strange problem. I am using a genuine Arduino Uno that is driving 3x TB6560 stepper drivers that are controlling NEMA 17 steppers. The firmware is EstlCAM and I have it setup without any limit switches or probe at this stage, I just wanted to get the motors driving correctly and the stepping sorted. The distances are all correct and the speeds are good too, but the problem I have is that all three motors only moving in one direction, no matter which direction I choose. After checking and rechecking many times, I am at a loss to know what to check out next. Maybe someone can think of something that I have not thought of??? Thanks https://reprap.org/forum/read.php?131,832842,832842#msg-832842 Thu, 15 Oct 2026 22:14:21 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?131,832842,833057#msg-833057 https://reprap.org/forum/read.php?131,832842,833057#msg-833057 VDX CNC Routers, Mills, and Hybrid RepRapping Fri, 07 Sep 2018 01:10:34 -0400 https://reprap.org/forum/read.php?131,832842,833053#msg-833053 https://reprap.org/forum/read.php?131,832842,833053#msg-833053 I have found that the cuts are mirrored to the CAD file and have no idea on how to change that on the machine.
I can mirror the CAD file, but that is not the right way to do things.]]> regpye CNC Routers, Mills, and Hybrid RepRapping Thu, 06 Sep 2018 23:51:08 -0400 https://reprap.org/forum/read.php?131,832842,832939#msg-832939 https://reprap.org/forum/read.php?131,832842,832939#msg-832939 I re-flashed the board with GRBL and after taking the wiring apart and testing one motor at a time with UGS I found that I had mixed up the direction wires for the motors.
I had used white wire for the direction on all motors and coloured wires for the step wires (blue, green, yellow) It was easy to get the white wires mixed and I found the problem when I undid the loom.
Got the machine working now with EstlCAM , just need to set the currents the currents and other settings to make it smoother.]]> regpye CNC Routers, Mills, and Hybrid RepRapping Wed, 05 Sep 2018 23:38:59 -0400 https://reprap.org/forum/read.php?131,832842,832931#msg-832931 https://reprap.org/forum/read.php?131,832842,832931#msg-832931
Could be, you have to activate the endstops (even if not installed) and set to the "not triggered" value - but this is only guessing ...]]> VDX CNC Routers, Mills, and Hybrid RepRapping Wed, 05 Sep 2018 18:28:24 -0400 https://reprap.org/forum/read.php?131,832842,832927#msg-832927 https://reprap.org/forum/read.php?131,832842,832927#msg-832927 Inputs 2 shows what happens if I invert the polarity, the software is aware of a problem and marks the buttons in red.
The homing screen shot shows that I have assigned nothing.]]> regpye CNC Routers, Mills, and Hybrid RepRapping Wed, 05 Sep 2018 17:56:22 -0400 https://reprap.org/forum/read.php?131,832842,832926#msg-832926 https://reprap.org/forum/read.php?131,832842,832926#msg-832926 At the bottom of the screen there is a band that appears if anything is wrong and nothing is appearing.
This band is in orange colour and has text displaying any error found at anytime, like comm port not found, etc.

I have attached the list of commands available.]]> regpye CNC Routers, Mills, and Hybrid RepRapping Wed, 05 Sep 2018 17:26:02 -0400 https://reprap.org/forum/read.php?131,832842,832880#msg-832880 https://reprap.org/forum/read.php?131,832842,832880#msg-832880
This "one direction" issue is mostly connected to endstops or "wrong" read levels of input pins ... otherwise you have a software problem ...]]> VDX CNC Routers, Mills, and Hybrid RepRapping Wed, 05 Sep 2018 09:35:14 -0400 https://reprap.org/forum/read.php?131,832842,832864#msg-832864 https://reprap.org/forum/read.php?131,832842,832864#msg-832864 I have no homing switches and non are assigned in the firmware either. Homing is not activated.
The firmware controller doesn't show any limits being activated either.
I have reversed the direction within the firmware and the motors go the other way as expected, but still only move in one direction.
The firmware is EstlCAM so maybe not many know about this (it looks really great)]]> regpye CNC Routers, Mills, and Hybrid RepRapping Wed, 05 Sep 2018 06:38:10 -0400 https://reprap.org/forum/read.php?131,832842,832855#msg-832855 https://reprap.org/forum/read.php?131,832842,832855#msg-832855
This "only one direction" is common for "triggered" homing switches ... which endstops are "triggered", can be easy tested with the "M119" code ...]]> VDX CNC Routers, Mills, and Hybrid RepRapping Wed, 05 Sep 2018 05:29:47 -0400 https://reprap.org/forum/read.php?131,832842,832842#msg-832842 https://reprap.org/forum/read.php?131,832842,832842#msg-832842 I am using a genuine Arduino Uno that is driving 3x TB6560 stepper drivers that are controlling NEMA 17 steppers.
The firmware is EstlCAM and I have it setup without any limit switches or probe at this stage, I just wanted to get the motors driving correctly and the stepping sorted.
The distances are all correct and the speeds are good too, but the problem I have is that all three motors only moving in one direction, no matter which direction I choose.
After checking and rechecking many times, I am at a loss to know what to check out next.
Maybe someone can think of something that I have not thought of???

Thanks]]> regpye CNC Routers, Mills, and Hybrid RepRapping Wed, 05 Sep 2018 02:41:59 -0400