Fitting an encoder to non Tormach mill (Again)

I now have G33 Spindle Synchronized Motion.

I used 4 lines of hal suggested by 'Clive S' from the last time I tried:
Table motion appears to follow my DIY optical encoder, I can hear the steppers changing pitch as they follow the errors in the crappy encoder. Main problem is the optical disc is running eccentrically, I'll have another go at getting it to run true but I think I need something better.

Thank you to everyone who have shared their knowledge, both this time and my last failed attempt.

Ken

With the new bitfile the "unknown function gtag-26" warning has returned when I start PathPilot.

I've done the power cycle many times in the last week and it's still there.

I saw mention of it being caused by a too old version of mesaflash.

Downloaded the latest version from github and compiled it on a VM running the same versions of linux and PathPilot as the 'real' machine.

Forced PathPilot to use the new mesaflash to program the 5i25..., and the warning is still there.

It doesn't seem to cause any problems but it's something more subtle than just an old version of mesaflash. Maybe its the old versions of linux and linuxcnc that I'm using.

I do really have to get my act together and update.

That means the LinuxCNC version you are using is quite old
(specifically the hostmot2 driver) GTAG 26 decimal is the DPLL
which has been supported by hostmot2 for at least 5 years

PCW wrote: That means the LinuxCNC version you are using is quite old

Yes it is old.

(specifically the hostmot2 driver) GTAG 26 decimal is the DPLL

There are dplls listed when I use halshow, I was part way to setting a spindle encoder to use the dpll for read timing then discovered the encoder doesn't have the timer-number pin.

Can I assume 'halcmd show all' is correct, if it lists a pin or parameter then the pin or parameter really does exist?

Ken

Yes