You are my Jedi Master, Obewan! The advice you gave fixed the UBL problem I was having. The mesh now sits firmly on the bed and goes from edge to edge without spilling over. I did have a couple of instances where the print head tried burying itself below the bed, but a couple of resets fixed that. Now I can move on with my next mods, a more stable Y-axis with rails and leadscrew rather than v-wheby Scoundrel666 - Firmware - Marlin
With the X & Y home set to the corner of the bed, the min endstops are at X-15 and Y-28, the inverse of which are what I used to offset the X & Y home points. I've attached both the requested files to this message.by Scoundrel666 - Firmware - Marlin
OK, I followed the instructions you pointed at, but it did nothing for the home point and the ABL mesh is still off the bed at front and left. I managed to get the home corrected and doing a G1 X0 Y0 Z0 perfectly aligns the nozzle with the front left corner of the bed and is persistent across restarts thanks to the M206 and M851 commands. I really need to get the ABL sorted as the Tronxy has a rby Scoundrel666 - Firmware - Marlin
Hi, I have no idea why the home values for X and Y are the way they are. All the endstops are min ones. The x is on the left and the y is at the back of the bed. All I did was download the Marlin firmware and configure configuration.h to get it working with the printer I have. It is largely a Tronxy X3a stock printer but with the mods detailed below. This is also my first attempt at 3D Printinby Scoundrel666 - Firmware - Marlin
I've just upgraded the controller on a Tronxy X3A to a RAMPS 1.4 leaving everything else apart from the z-Probe intact. I have configured the Marlin 1.1.8 firmware for everything I believe I need to. The problem is when I try to do Auto Bed Levelling, the mesh starts out within the boundary of the bed, but then starts trying to sense outside the bed. I have tried both linear and UBL types of Aby Scoundrel666 - Firmware - Marlin