On 24 October 2016 at 19:47, <[email protected]> wrote: > Pretty darn fast! Rastering can be 35 inches/sec and 100 dpi or more (more > dpi is questionable, the beam is typically 0.008" dia). So, KHz changes.
So, in theory, changing the duty cycle of a 25kHz PWM at 3.5 kHz. It is possible, on some hardware, to run a 4kHz servo thread and to send the duty cycle to an FPGA card to generate the PWM. If 2kHz is acceptable, then it looks a little easier. That would be 60 dpi, or 100dpi at 20 inches/sec > I can imagine handling bitmaps WAY better than what ULS did, but it seems > like it has to happen in the printer drivers. How do you fancy a coding project? _some_ of the work that needs to be done is already there: https://forum.linuxcnc.org/24-hal-components/22572-hal-power-laser#22961 Note that there is also Graster, wiki.linuxcnc.org/cgi-bin/wiki.pl?Rastering_With_A_Laser , but that seems kludgy to me. But has the advantage of working -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
