Pimping the mini-lathe

Hi Bob,

If I was really driven to replace that gear, I'd buy Gearotic, and make up a fourth axis to mill it, but don't see the necessity.
Mark

Episode 16 is up. Getting closer to LinuxCNC by the week...


Mark

Glad to provide a little light entertainment. Thanks for watching.

Soon the LinuxCNC config work will start again, and then I'll be posting more questions, as it is my first use of a Mesa Ethernet card.
Mark

Last week I screwed up, so Episode 17 is only a fraction of what it should have been,


This weeks Episode 18 is back to the usual standard...

Mark

I have started to look at the motion control aspects of this build. Found this thread on getting a PWM signal out of the 7i96 to control a VFD.
forum.linuxcnc.org/27-driver-boards/3923...96-which-pin-for-pwm

The LinuxCNC manual has a good instruction with example of how to connect the "S" word command to that PWM output:
What do I have to change in the Bitfile to get the 7i96 to load that one PWM?
Mark

As long as you have loaded the

7i96d_1pwm.bit


Bitfile, PWM should be present, as long as it's not disabled in the hal file
with a "num_pwmgens=0" token in the hm2_eth driver command line.

Thanks PCW. The 7i96 is currently in the "as delivered"configuration. Is that the default bitfile which MESA loads?
Mark

The as shipped 7I96 has the 7i96d.bit bitfile loaded
This has 5 stepgens and no PWM.

To load 7i96d_1pwm.bit you would need to fetch the 7i96.zip archive from Mesa,
extract the 7i96d_1pwm.bit bitfile and run these commands:

mesaflash --device 7i96 --addr [the cards current ip address] --write 7i96d_1pwm.bit
mesaflash --device 7i96 --addr [the cards current ip address] --reload

Thanks very much.