I don't have an Arc OK

The lead would make a magnetic field with the ferrite ring and the hall affect sensor is manipulated by that. Am I understanding that correctly?

This solution doesn't require me to change too much. I might have something kicking around. I'm in a rural area so shipping new stuff takes weeks if I'm lucky.

Yes, the alignment of the sensor may be important to be N-S aligned. So long ago I saw the idea.

There is a encoder component you can use with a parallel port some people have used. I think the reduced the thcad hardware divider to 1/128 or something.
linuxcnc.org/docs/2.8/html/man/man9/encoder.9.html

Kale wrote:

The lead would make a magnetic field with the ferrite ring and the hall affect sensor is manipulated by that. Am I understanding that correctly?

This solution doesn't require me to change too much. I might have something kicking around. I'm in a rural area so shipping new stuff takes weeks if I'm lucky.

I used the method here forum.linuxcnc.org/plasmac/39386-i-don-t...rc-ok?start=0#172416

Very simple and works well the reed switch came from an alarm contact it has never failed

Clive wrote:

Very simple and works well the reed switch came from an alarm contact it has never failed

I might have to figure out some junk to cannibalize that might have a reed switch.

I've been looking into getting a THCAD. I think if I go Mesa I'll get a control board too. I have to pay international shipping so I might as well get everything.

I had something that looked like progress yesterday on my Arduino THC. So I'll keep at it for now.