Hi One and All,
New here and new ish to electronics.
I have put together a physical test environment with a 450watt psu from a PC, an Arduino UNO R3, CNC Shield v3 - this is driving 3 dvd/cd rom drawer stepper motors via 3 A4988 drivers.
Firmware uploaded as gbrl v09 using XLoader and running some test g-code using UCG.
I have set V-ref on the drivers using a multimeter balancing motor function and heat. Well, there is in fact a very small voltage window where the motors work (.75 or thereabouts) the coils test at 10-11ohms.
The issue! X, Y, and Z axis all work perfectly when run individually. However, from a blog (can’t recall which right now) I have created some polygons for the 3 axis to draw/print.
X and Y motors won’t run at the same time when the code dictates. X always runs and Y just shudders but when the code within the same file dictates motor Y to run alone it works fine. Z works fine irrespective of what X and Y do.
I have tried adjusting v-ref to no avail. Does anyone here have any ideas how I can get Y to run alongside X?
Thanks in advance…