Help troubleshooting slow Y axis (FIXED)
I am in the process of installing the new board. But need some advice on troubleshooting.
My K40 is a little different. Mechanical limit switched (NC) and no ribbon cable. Also the connector types didn't quite fit the shield (I had to trim the plastic tabs)
(Connectors were hot glued down and wired slipped out of connectors upon removal and needed to be re-crimped - anoying)
I have gotten everything wired and my PC talking to the controller with CNCjs. (I had some difficult here, it turns out the shield was not firmly seated on the main board. Re-seating it fixed the issue)
However, the Y axis is not working properly. It is moving INCREDIBLY slow.
Y axis works fine when connected to the X axis output. X axis moves slow the same way on the Y output. - So it is not the motor or wire.
I checked that the GRBL steps per mm were (mostly) the same for both axis (using $$)
I checked that the stepper driver pots were set the same.
I switched the stepper driver chips to test for a bad driver. No change so the drivers are good.
Sending manual G0 commands with different federates has no effect on the Y axis, but does on the X.
?
UPDATE: Found it!
It turns out the Max speed was only defined for the X axis!
$110 = 10000.00
$111 = 0
I changed it to
$110=10000.00
$111=10000.00
Problem fixed.
I was also getting a little sudder and slippage on the X axis motor. I turned up the current POTs on the stepper drives and that fixed that issue.
(Posting this in case anyone else has the same issues)
Glad you found the issue! Great way to debug issues like that. Sometimes the eeprom can be overwritten by a glitch. I have only encountered this once when I drove the controller too hard on max speed.