Starting from scratch (again) - need help (apparently a lot)

hooked a gecko back up with the common hooked to 5v from the 7i76 and moved the step/dir to negatives and it's making noise !!! (that high pitched stepper whine)
can move slowly in the Z-axis jog +/-
The default settings it pulled from a 201 don't seem to be very close so I'll have to try adjusting them to get it to spin up

Quick Question for anyone maybe

Where does linuxcnc get the max velocity speed from? In the pncconf I bumped it up to a much higher number that helped the stepper speed up and smooth out number but it doesn't seem to change what linuxcnc is using as the max

Anyway, more research but progress from yesterday so moving in the right dir
M

mooser wrote: hooked a gecko back up with the common hooked to 5v from the 7i76 and moved the step/dir to negatives and it's making noise !!! (that high pitched stepper whine)
can move slowly in the Z-axis jog +/-
The default settings it pulled from a 201 don't seem to be very close so I'll have to try adjusting them to get it to spin up

Quick Question for anyone maybe

Where does linuxcnc get the max velocity speed from? In the pncconf I bumped it up to a much higher number that helped the stepper speed up and smooth out number but it doesn't seem to change what linuxcnc is using as the max

Anyway, more research but progress from yesterday so moving in the right dir
M

There are 2 in the ini file and another under the display options. Also stepgen Max accell.

In pnconf there is a button to test the axis. I think you can jog as fast as it is capable of making steps here

Set the step time and space to 15000, test to check if everything is OK, later you can try to lower them.

tommylight wrote: Set the step time and space to 15000, test to check if everything is OK, later you can try to lower them.

Seems to max out at 10000, anything I enter higher gets changed back to 10000

The default 201 settings appear to work, the test motor is just turning really slow within linuxcnc, I can get it to spin up in the test/tune within pncconf but not once in linuxcnc

Probably a setting in the scale bit. I'm going to copy out the existing settings in Mach3 on the machine and pull the actual numbers (ration pulley etc) just to see
M

There is max velocity in the joint and axis section of the ini file.

Also where it calls out your display it has a jog velocity and override velocity

I found the sections in the ini but need to read more, in the test/tune I can put a vel of 1000 and the motor is happy but that can't be in inch/minute...

On the actual machine I've got mach3 set to 50 ipm on the z. I've got a leadscrew with I think around 5mm pitch and a 1:1.5 or so pulley ratio on the Z-axis so even though this isn't the right motor or anything I'm thinking
5.081 turns per inch x 50 ipm should be 254 turns per minute.
200 steps per turn (@1.8 IIRC)

But anyway, something I changed has caused a huge error and it wont load now (I added a spindle step/dir but even though I removed it the error remains)
"Pin axis.9.motor-pos-cmd does not exist" looks like something I have to remove manually from a quick search

One step (LOL) forward, one back
M