Homemade, cheap, plasma CNC

This is where people get confused. you can't connect computer chips pin to pin. You have to use a wire or solder trace.

so with lcnc components, you replace the wire with a signal which can be whatever name you like.
To me it always makes it clearer to do it on two lines to make it clearer, particularly when starting out.

the <= and => are not required, they just are designed to make the meaning clearer by showing a direction (eg input or output)
 

That is why I find it easier if it is all on one line, that way you know it is all in one place.
 

phillc54 wrote:

That is why I find it easier if it is all on one line, that way you know it is all in one place.

 

But my one line didn't make it to his hal file. I nearly did it on two lines but I was lazy and did it Phil's way
I think its easier for novices to understand on two lines. 

Probably because the same net is in both hal files...
 

If this is for a laser then I would suggest:

comment these four lines out in PLASMA.ini file:

delete this line in custom.hal:



add this line in PLASMA.hal from:


after starting linuxcnc go to the parameters tab and set the offsets for the laser, then the laser button will appear in the dro frame.

linuxcnc.org/docs/devel/html/plasma/qtplasmac.html#qt_laser

linuxcnc.org/docs/devel/html/plasma/qtpl...l#peripheral-offsets

Thanks Phil & Rod,

Total newb error I'm sure.
I have made the changes.


# ---PLASMA OUTPUTS---
# ---all modes---
net plasmac:laser-switch     <= plasmac.laser-on

# external output signals

# --- LASER ---
net plasmac:laser-switch  =>  hm2_7i96.0.ssr.00.out-01


I now get the following error.

"PLASMA.hal:58: Pin plasmac.laser-on does not exist"
 

Needs to be in postgui file because the pin is created in the gui. 

If i put that line in the postgui file i get the same error.

This laser is a sighting laser. Just so i can see where i'm going to be cutting. NOT A CUTTING LASER. it is run from a relay activated by the MESA7i96 through one of its outputs.

RNJFAB wrote:

If i put that line in the postgui file i get the same error.

Comment out the offending line and check in halshow the pin exists. You need to have laser offsets in your ini file for the pin to exist but i thought I saw you had that.

then press the laser buttonm on bottom right and see if it lights up in hashow

Oops postgui is correct

it needs to b qtplasmac.laser_on , you have:
# ---PLASMA OUTPUTS---
# ---all modes---
net plasmac:laser-switch     <= plasmac.laser-on