I am setting up my ramps 1.4 and went to set the current on my 8825 drivers. the X axis is showing a max voltage of .209, the Y axis has a good range and the Z axis is showing .03. Are my X and Z drivers bad?
Hello.
Can you clarify what you mean when you say that the Y axis has a good range? What voltage levels are you seeing from this reading? Also, how and where are you measuring these voltages?
-Brandon
Can you clarify what you mean when you say that the Y axis has a good range? It is in reference to the driver in the middle, which adjusts normally via the pot. This is regardless of which position I place the driver (X, Y or Z). I set it at .452 V in the photo, but I can adjust it up or down. I am measuring at ground and VREF or the pot (I get the same reading at both)
The driver at the bottom or X axis position, can only be adjusted to the max voltage, in this case .185 V at full clockwise. I can adjust the pot counter clockwise and lower the voltage to 0.
I am using two PC power supplies coupled to provide 24 volts.
OK, I am embarrassed to say I had them in backwards, all based on images I had seen (of other drivers). I found this after a hint from the ramps forum.
Thanks
.
I am glad you found out what the problem was and that you were able to correct it. Thank you for letting us know.
-Brandon