Help with Mesa card seletion

Todd Zuercher wrote: As bad as you make it sound it is a wonder anyone bothers with Mach at all.

Mach forums are probably full of folk saying "I tried LinuxCNC, but it was awful, it's so complicated and they expect you to know all about computers and machine tools and stuff"

100,000 users and 10,000 paid-for licenses can't be all wrong. (numbers made up)

It most certainly is as bad as it sounds. If there had been anything spelling this issue out up front, not a chance I would have went with Mach. I'm sure I'm in for a ride learning LinuxCnc but if the machine is safe and predictable, I'm up to it. One of the reasons I spelled out my experience was specifically that others may see it and make an informed decision.

Off for 3 days of tail gating. Go Hokies.

You will be very happy with feed hold. it is instant (as fast as the machine can de-accelerate.) Takes off right where it left off.

that being said - I don't use feed hold anymore. Since we hooked up maximum velocity to the jog wheel.

It lets you sneak up on a part (caps the maximum feed of a program - not scaling like feed override).

Mike VT wrote: Could you clarify. I thought velocity/acc=Time
Then X=V*t+1/2a*t^2.

Yes, but we don't know the time to stop, we know the velocity and acceleration and want the distance, so I used:
v^2 =u^2 + 2as as my starting point. (or x = (v^2)/2a if you prefer)

Wow, my math skills are very rusty. Took a few trys but I see your numbers are correct. Thanks