[zafarsalam]

Thanks!

I am running the 500 cpr at 4x so I get 2000 ticks per revolution. the mill is 5 tpi, so I get 0.0001" per tick. Max speed is 120 IPM. If I did the math right that means a tick every 50 microseconds (20 kHz). The interrupt for the micro-controller takes less than 10 microseconds...probably about 5 microseconds. I would guess that you could get up to 50 kHz without to much trouble.

Is it Turbocnc on your machine PC?

[rlwoodjr]

Is it Turbocnc on your machine PC?

Yes it is. Boots in a few seconds...

[zafarsalam]

Yes it is. Boots in a few seconds...

Last time I used Turbocnc, it was losing position on arcs and didn't have constant velocity contouring. Then I switched over to Mach3. That was almost 6 years ago.

[rlwoodjr]

Last time I used Turbocnc, it was losing position on arcs and didn't have constant velocity contouring. Then I switched over to Mach3. That was almost 6 years ago.

That is too funny. I do not have any problems with arcs, but the constant velocity always sounded good...not so much for the mill, but I also have a router.

I like DOS in the shop.

[zafarsalam]

That is too funny. I do not have any problems with arcs, but the constant velocity always sounded good...not so much for the mill, but I also have a router.

I like DOS in the shop.

Mine was 4.0, I guess. Maybe the position loss was with backlash enabled. It was a known issue then. Anyways, I am happy with Mach. I've controlled a variety of machine tools with it like, mills, machining centers, turning centers, turret punch, pipe bender, oxy-fuel cutter etc. Yet to do a router though.

[ycroosh]

Thanks for the details. It just dauned on me the that the axes don't need to talk to each other, so one MCU per axis works just fine . Is ATMega copind with the multiplexid pretty good? (i.e. no flickering)

Thank you
Yuriy

[rlwoodjr]

Thanks for the details. It just dauned on me the that the axes don't need to talk to each other, so one MCU per axis works just fine . Is ATMega copind with the multiplexid pretty good? (i.e. no flickering)

Thank you
Yuriy

I adjusted the delay to optimize the look until you cannot see any flickering.