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Archive for November 22nd, 2018

LinuxCNC 2.7 vs. Logitech Joggy Thing

The old Atom running LinuxCNC for the Sherline finally stopped booting, so I popped the Optiplex 760 off the stack and did a live-USB trial run. The latency / jitter worked out around 25 µs, slightly worse than before, but still Good Enough, and the StepConf utility coerced the motors into working OK.

What didn’t work was the old Eagle-to-HAL code defining the Logitch Gamepad as a Joggy Thing to allow smooth joystick jog control. Well, stuff changes over the course of eight years, but, in this case, the fix turned out to be a one-liner: the probe_parport module isn’t needed nowadays.

With that out of the way, it runs fine:

LinuxCNC - Sherline Mill - Logitech Gamepad

LinuxCNC – Sherline Mill – Logitech Gamepad

The INI and HAL files defining the Sherline configuration as a GitHub Gist:

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