i HAVE A PROBLEM I HAVE JUST FINISHED BUILDING A LARGE OX OPEN BUILD AND HAVE LOADED ARDUNIO/UGS ECT HAVE HAVE TESTED MOVEMENT OF AXIS THROUGH CONTROL ON UGS ALLS GOOD . HOWEVER WHEN I LOAD A PROGRAM LIKE THE ONE INCH CIRCLE TEST FILE YOU HAVE THE MACHINE GOES ROUGUE AND TRYS TO DIG A HOLE TO CHINA ,OR GOES SIDEWAYS AT 100MPH. PULLING THE USB CABLE IS THE ONLY WAY TO STOP IT. NOW THE QUESTION IS, SHOULD I HAVE A BASE LINE OF SETTINGS IN THE CONTROLLER PRIOR TO RUNNING ANY PROGRAM. I CAN FIND NO REFERENCE TO THIS ANYWHERE. HOPE YOU CAN HELP PETER FROM TASMANIA AUSTRALIA
this the program i tried to run G Code Example The following is exactly what is saved in the circle.nc file. Click the link below to download the file. Download the g code example file G17 G20 G90 G94 G54 G0 Z0.25 X-0.5 Y0. Z0.1 G01 Z0. F5. G02 X0. Y0.5 I0.5 J0. F2.5 X0.5 Y0. I0. J-0.5 X0. Y-0.5 I-0.5 J0. X-0.5 Y0. I0. J0.5 G01 Z0.1 F5. G00 X0. Y0. Z0.25 This simple program will draw a 1” diameter circle about the origin. Use this program to test your CNC machine and confirm your axis directions are set correctly. Note all gcode programs a simple text files save with a “.nc” extension. You can open the “circle.nc” file downloaded above in a text editor like Notepad. You can also copy and past the above lines into a text editor and create your very own CNC program. Simply save the file with a .nc extension.
Seems you need to set the GRBL settings for mm per Step. You can use this calculator to find the basic settings GRBL settings calculator and then you can use this resource to do the final calibration HOWTO Calibrate your CNC Machine for MACH3 or GRBL NOTE that you do need to make sure that your travel directions are correct. X positive motion is 'tool moving right' Y positive direction is 'tool moving away from you' Z positive direction is 'tool moving up, away from the material' I think the part 2 OX video goes through this process: OpenBuilds OX CNC Machine
Thanks for the reply David , I think i was expecting the "OX" to work straight away .In my excitement at finishing the build, my brain (or lack of ) glossed over the "how to Calibrate the machine section " A bit of study now needed. thanks again, Pete
