Getting started with Linux, LinuxCNC and CNC

Sorry for that, was way to busy, as always.
I will be here for another 3-4 hours, just in case...
Tom

Thanks for this, I will try it out. Will it work woth just one sensor, or two of them are mandatory?

It will work with one, just connect the output from sensor to one of the inputs on paraport so it can show if you are actually getting a signal.
4 inputs are for connecting them to the ground, one is that needs an actual 3-5V to show in the panel.
Tom

Got it all working, thanks to Tom and John-100 from cnczone.
For future reference, if someone uses ITR8102 opto with common China 5 axis BOB (documents enclosed) following schematics for opto sensors will work.

Also, I found this post on g71 and g72 subroutines, but I cant clearly understand how to implement them?

forum.linuxcnc.org/forum/40-subroutines-...etc-etc?limitstart=0


and this g33 program for knurling looks interesting, but, again, how to use it?

forum.linuxcnc.org/forum/show-your-stuff...-using-g33-emco-120p

sharpshooterser wrote: Also, I found this post on g71 and g72 subroutines, but I cant clearly understand how to implement them?

forum.linuxcnc.org/forum/40-subroutines-...etc-etc?limitstart=0

The ZIP file contains a set of routines that are described in the README file. The files work as part of the NGCGUI wizard system

I have replced the electronicsand the steppers on my Emco yesterday. Got a slightly better performance than before (mainly due to low voltage power source) bit thats something to work on.

I have few other questions. I used simple china 5axis bob. Got the e stop working properly. My main switch is killing the power to the swittchung supply and the bob.
How can I make linux not to ask me to home it every time I turn the machine off and then on?
How can I make linuxcnc to "turn off" (to dim the power button" when I turn off the main switch?
Because g54 and similar commands wont work when its not homed. And if I turn off the lathe on the main switch, and linuxcnc keeps runing, the position changes I make on it doesnt affect the tool position when I turn the lathe on again.
For instance, if I position the cutter to 0,0 and turn off the lathe, if I move the position in linuxcnc (that is still running) to 10,10, when I turn the machine back on, cutter stays in same position, but it reads 10,10 (and not 0,0 like when I turend it off).
Oh, and one more thing - I dont see the cutter image on preview, when I load the tool with m6 g43 command.
And cancI just copy the tool table fromcthe old setup, I havent made any changes on them physically?
Thanks

sharpshooterser wrote: How can I make linux not to ask me to home it every time I turn the machine off and then on?

See the ini-config docs on NO_FORCE_HOMING
linuxcnc.org/docs/2.7/html/config/ini-config.html#_traj_section

How can I make linuxcnc to "turn off" (to dim the power button" when I turn off the main switch?

You could make the main power also operate a tiny relay that switches a GPIO to drive the pin motion.enable
linuxcnc.org/docs/2.7/html/man/man9/motion.9.html
If your GPIO can handle the main-switch control voltage then you might not need the relay, but you probably need flyback diodes.

Oh, and one more thing - I dont see the cutter image on preview, when I load the tool with m6 g43 command

Does the tool table specify orientation, front angle and back angle.

Thanks Andy - got it on homing, and tool table is all set up.
As for GPIO, I ll have to work on that, but its doable.

solved