On Thursday 13 June 2019 10:18:11 pm John Dammeyer wrote: > > On 06/13/2019 12:42 PM, John Dammeyer wrote: > > > So how many hours of labour for you to create a completely > > > functional > > > > LinuxCNC with two parallel ports on 26 pin ribbon cable connectors > > that can be swapped into existing BoBs? > > > > > > Zero hours. There is Machinekit, which is a branch of > > LinuxCNC, that runs on the Beagle Bone Black, and has done > > so for something like 5 years. I make the CRAMPS board that > > mounts up to 6 Pololu stepper drivers to it, and level > > converts all the other I/O for it. So, a very compact > > package and you just need to wire the motors, limit > > switches, etc. to it, and provide a power supply. > > > > Jon > > I think I meant time to do this for a Raspberry Pi and LinuxCNC > without using an Ethernet Mesa Card. Or maybe that's the only way to > do it with a PI.
No, although there my be better solution now with the 7c80 on the horizon. I am using a 7i90HD which is a 3.3 volt only card, with 3 7i42TA's protecting the 7i90 which gives me 72 i/o's to spend as I please, so I am a long way from running out of I/O even with jog dials on the apron instead of hand cranks. But with the 7c80 coming into view that job can probably be done now at less cost than the 7i90HD plus 3 of the 7i42TA's. That combo is working well with an extra spinx1 to handle the vfd. Rigid tapping, the whole mary-ann is just a few lines of gcode. > I have the Xylotex DB25/26 cape. Here's the Beagle from last year > running part of my mill. https://youtu.be/9GF709ZfLRQ > > The screen handling is, at times a bit rough. > > http://pico-systems.com/osc2.5/catalog/product_info.php?cPath=2&produc >ts_id=1 But your CRAMPs board could be a model for a full CNC > motherboard. > > John > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
