Hello, i am using repetier host to test the motors, with a4988 drivers in Ramps 1.4 and a mega 2560 board.
I set the voltage in the a4988 driver.
In the z axys both motors seems to work ok, but x and y the motors does not complete the movement and make noize.
I tryed to change the motors for z axys and all them work fine.
The extruder motor seems to be ok too.
If I lower the voltage in the driver, the movemente seems to be correct, but I can stop the movement of the motors easily by holding the pulley.
I suspect that the problem is my power source. I am using an old atx delivering 18A and 216 W in the 12v wires. But the problem don't change even if i wire only one motor in the Ramps
Can Anyone help me?