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Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: December 29, 2011, 07:35:49 AM »
Initially there was failure.
I mapped my B Axis direction pin to Output #1 (which is my spindle relay) and used the relay to fire the magnet. Unfortunately my version of Mach doesn’t like any Output # being repeatedly turned on and off rapidly as it introduces extra delays while it, presumably, catches up. This has caused missed pulses and ‘patterning’ indicating the repetitive nature of the problem and shown in the first picture.
Then there was success.
To be fair, Mach had never intended for an Output # to be cycled in this manner so I constructed a separate magnet driver circuit which is driven directly from the B Axis direction pin and this performed perfectly. The image produced is ‘dot-perfect’ to the laser produced image and was made from exactly the same GCode in exactly the same time frame of 80 minutes.
Tweakie.
I mapped my B Axis direction pin to Output #1 (which is my spindle relay) and used the relay to fire the magnet. Unfortunately my version of Mach doesn’t like any Output # being repeatedly turned on and off rapidly as it introduces extra delays while it, presumably, catches up. This has caused missed pulses and ‘patterning’ indicating the repetitive nature of the problem and shown in the first picture.
Then there was success.
To be fair, Mach had never intended for an Output # to be cycled in this manner so I constructed a separate magnet driver circuit which is driven directly from the B Axis direction pin and this performed perfectly. The image produced is ‘dot-perfect’ to the laser produced image and was made from exactly the same GCode in exactly the same time frame of 80 minutes.
Tweakie.