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Off On Off Off Off Off which is 8 steps as I have it configured in stepconf and max current which i believe is 4.2 A with the TB6600. Nothing gets the slightest bit warm. Original stepper was a nema 23 but round bodied and smaller than the 425ox (I only have one, The guy I bought it from had removed the Z stepper and fitted an electric drill to the shaft).

What are the drives set to?
What motors were there originally?

In the ini file
HOME_SEARCH_VELOCITY
HOME_LATCH_VELOCITY
HOME_FINAL_VELOCITY
Any of those you have, set to some reasonable value in machine units per second.

Murphy wrote:

I'll try and find my old .hal file for my mill tomorrow , I  got that working with prox and limit switches, I think they were all wired to one input also. It was with a BOB though not remora 

I think it homes one axis at a time. Hits the switch backs back off again a set amount. Then moves on to the next axis and so on 
 

Yes, that is how my homing works. Z first (don't want anything attached to the bed to crash into the head, then X, and finishes up with Y. That part works great, with a little odd behavior with the Y as it for some reason hits, backs up and comes at it again real slow, like it's probing, then jumps off a few mm and zeros like the other 2 axis. Attempting to add in the limit sw config, Z will home properly and then reports that a limit switch was tripped and the homing process is stopped dead.

8GB of dual channel ≥1333MHz RAM is fine.

Just making sure you're not trying to get by with like 2GB.

Whoa!

Don't desolder stuff!

You said Realtek card, not Realtek chip!

Cards are easily removeable, chips generally are not.

Don't mess with the motherboard.

The 7I96S has two internal voltages regulated down from the 5V supply
3.3V and 1.2V The power LED monitors the 3.3V used for most logic.

means all Ok Thank you...
but what you mean with 3.3v?

I'll try and find my old .hal file for my mill tomorrow , I  got that working with prox and limit switches, I think they were all wired to one input also. It was with a BOB though not remora 

I think it homes one axis at a time. Hits the switch backs back off again a set amount. Then moves on to the next axis and so on 

Hi
Looking for a bit of help from the more experienced cnc'ers out there.
I am in the process of converting an old Magnum Phoenix EZ CNC wood lathe to linuxcnc. As it was originally fitted with nema 23 steppers I bought a cheap kit off amazon with nema 23 270oz steppers, TB6600 drivers and a 24v supply. Drivers do not seem to have enough torque as it may turn a bit but then just jitters. Woret on the long z axis.  I purchased a 36v supply and a pair of 425oz nema 23 steppers.
Neither increasing the power supply voltage alone or switching to the 425 oz steppers seem to make any noticeable difference. when it is stuttering ie not turning, it only takes a little bit of help by turning the screw with my fingers to get it moving and I don't notice any difference in the amount of help it needs with 24/36 or 270oz/425oz.
I have reduced the velocity and acceleration in stepconf and while slowing it down seems to help it certainly does not fix it.  Only thing i have not changed is the drivers. Is that the next logical step or is there anything in config I may need to look at?

When you get an error, what does:

halcmd show param *.tmax

(typed in a terminal)

show?

This will help determine where the fault lies

Murphy wrote:

I think that's explained in the Linuxcnc manual. If you look in that it may explain how to do it. What mill is it ? My .hal file I uploaded a few posts back. Have a look at that. It's a lathe though. I'll be starting my mill with remora next month.  I'm waiting for parts to arrive, to build a circuit to drive the 12v stepper drivers  first. My mill has limits and prox sensors.
 

If your thinking about here - linuxcnc.org/docs/html/config/ini-homing...witch_example_layout - that seems to be for only one axis. I get that and it works. My question is how do I add 2 more axis with shared limit/home switches onto that one pin. That does not seem to be explained.

CR8 is a power LED, illuminated when the 7I96S 3.3V is present.

Well, the suggestion to put a pot on the input seems to of done the trick, as I had to go look at the pictures in the manual again I noticed the factory had the signal on the wrong pin on the VFD. (sigh) Hooking up the pot worked and when the correct pin was wired in, it's working!!! So that problem solved. At least now I can focus on the limit/home switches all on one pin.

Thank you Murphy and Cake! I'm a bit overwhelmed seeing the spindle work as it should. Thank you!