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Mach SDK plugin questions and answers. / Re: Impact engraving plugin
« on: August 12, 2015, 02:07:42 AM »
Hi Vogavt,
Thanks for reporting back on you progress with this. Interesting about the -2.7 volts output from the C10 - I have absolutely no idea what is going on there.
I think it is just fine to continue using this thread for the discussion.
Just some basic notes regarding driving an electromagnet from a stepper driver which may help others that follow to grasp the principle being discussed here...
1) If an appropriate a.c. voltage is applied to an electromagnet it will be energized.
2) If the frequency of that a.c. voltage is progressively increased there will come a point when the magnet is no longer energized - it will drop-out or stall (in exactly the same manner as a stepper motor stalls). This principle was used by Andrea to drive his magnet and initially paved the way for us all to follow.
3) The set-up is arranged so that the work is only impacted when the magnet stalls.
4) In operation the plugin scans an image and outputs a series of short (40mS) pulses, the repetition rate or frequency of these pulses varies in proportion with the individual pixel value of the image being processed. The greater the repetition rate the more often the magnet stalls and the more it impacts the work.
Hope this helps,
Tweakie.
Thanks for reporting back on you progress with this. Interesting about the -2.7 volts output from the C10 - I have absolutely no idea what is going on there.
I think it is just fine to continue using this thread for the discussion.
Just some basic notes regarding driving an electromagnet from a stepper driver which may help others that follow to grasp the principle being discussed here...
1) If an appropriate a.c. voltage is applied to an electromagnet it will be energized.
2) If the frequency of that a.c. voltage is progressively increased there will come a point when the magnet is no longer energized - it will drop-out or stall (in exactly the same manner as a stepper motor stalls). This principle was used by Andrea to drive his magnet and initially paved the way for us all to follow.
3) The set-up is arranged so that the work is only impacted when the magnet stalls.
4) In operation the plugin scans an image and outputs a series of short (40mS) pulses, the repetition rate or frequency of these pulses varies in proportion with the individual pixel value of the image being processed. The greater the repetition rate the more often the magnet stalls and the more it impacts the work.
Hope this helps,
Tweakie.