Hmm, I'll put my old printers hat back on. A Vector would be best by far.
If you use a bitmap, 300dpi is preferred but on a digital colour output device, you can get away with 200 dpi and maybe even as low as 150dpi. Resize the image (without rescaling or rendering) to the required dpi and you will know the maximum safe size.
Also there is an image in the source code for LinuxCnc that is used on the opening splash screen, is that any better resolution?
And this one found by googling "Linuxcnc"logo" is big enough to print perfectly (3008 pixels wide so will print 10"wide) even if its not the official one....
rodw wrote: Hmm, I'll put my old printers hat back on. A Vector would be best by far.
If you use a bitmap, 300dpi is preferred but on a digital colour output device, you can get away with 200 dpi and maybe even as low as 150dpi. Resize the image (without rescaling or rendering) to the required dpi and you will know the maximum safe size.
Also there is an image in the source code for LinuxCnc that is used on the opening splash screen, is that any better resolution?
And this one found by googling "Linuxcnc"logo" is big enough to print perfectly (3008 pixels wide so will print 10"wide) even if its not the official one....
I was planning to use Mesa cards, but I'm facing a dilemma : As the version of the machine I have is running serial modules for I/Os 2 solutions are possible.
1 - remove the serial modules and replace it with Mesa cards and relays (because most of solenoids are too powerful for just using Mesa cards outputs)
but I have a problem with the room available to fit relays and mesa cards into Z axis
2 - sniff and hack the protocol used by the modules and reuse it
but I don't have the knowledge to do it alone.
I have some details on the serial link, it is a fancy 9 bits protocol @ 750kbps
I've found source code for a C51 family processor that have been used to talk to this modules, but the programmer don't remember exactly how it works.
I plan to find or buy a protocol analyzer, and log the communications between CNC and modules.
At this time, I have electrical and pneumatic documentation, mesa cards (7i77, 7i84, 7i71 x2, 7i70, 7i73 and 7i74), a lot of relays (100+).
What I've done on the machine :
compressed air leaks (a lot)
mechanical fixes (a few, but a lot of cleaner and grease)
As it will take some time to re wire everything, it's an option for me to spend this time with serial protocol hacking. I can use the extra stuff in other machines, and I'll be pleased to make something that can be used by others. I've done a lot of retrofits using the knowledge I've found over the internet, so it's my turn to help others.
