Just finished building my MPCNC.
Bought the kit from the website and got it wired up and working great with an LCD. Manual access control worked perfectly, checked the accuracy of movement by marking the rails and moving by 10mm increments. Spot on. Then, fried the Arduino by shorting the GND and 5V.
Have now replaced the Mega and flashed R7. It’s working fine, with the exception of the LCD axis movement is moving the rails 4 times the amount they should.
eg. X/Y 10mm = moves the rail 40mm.
Z 1mm = moves 4mm
I should point out that the machine knows it’s doing this and the number given is in 40/4/0.4 increments, and the machine is drawings with great accuracy. Just confused why it is doing this…