reading Pokeys pins

[ArtF]

Gary:

  Sounds like a resistive probe, there shouldnt be any conduction when its open..
Perhaps cleaning it well, hard to say.

Im not sure about the jog tap, Ill look into that, essentially the mouse is captured
when you press a jog button, so any release is seen and used to stop. I'll do a couple
tests to see what may cause that ..

Art

[gburk]

Art

Think I have the probe letting the signal though and the led lighting dim messed with it awhile and looks like I have that fixed..

Still some probing problems I have to assume there internal to auggie…

If I hit touch off Z it runs fine touches off then backs off and then retracts to the set Z height.. I need to set a slow probe feed rate at 5 no more then 10.
or seems to loose steps mostly on retract.
But if I Zero the z now and then run the touch off Z again the feed rates are off it probes to fast and retracts to fast so it misses steps retracting..
The touch off Z script has the slow feed rate setting in it only, so I don't understand how if the script is run the second time it isn't running at the slow feed rate
it seems to ignore the slow feed rate on the second run, not sure what feed rate its using but way to fast and not the setting in the script..

update: I sleep on it last night and tried again this morning same problem..
It probes down and touches off good, problems seem when its backing off to open the probe signal I set invert probe to 1 and save the probe hit position and then try to back off to that position and open probe contact.
Its had to tell what's  going on from there but I thought it was loosing steps retracting, but in fact motor its skipping but it looks like from the dro  that its still trying to move down so crashing into touch plate.
maybe I should not try to backoff and invert the probe.. and use a different approach

Thinking maybe probe down touch off, then reverse to just for example to 0.02 re probe down touch off again and save that as the top of touch plates position then backup to 1.0,  form what I can see the problem starts trying to back off from the saved probe hit position maybe it didn't overshoot that position enough to backoff and release the trigger.. the BOB probe led does stay on so it looks like it not releasing

I can't test it simulation mode because I don't seem to have a way to simulate a probe hit, would be a safer way to test..

Any thoughts on this approach.   

Gary

[gburk]

Art

Ran it again by using G31 Z0.2 that should be upwards retract the dro may be sitting at -.6 or -.5 when the probe is hit going down but for some reason still want to move in the neg direction.. during retract do you think there's a problem with the G31 Code? I can't seem to get any consistence one time it may work usable on the first run then it just is all out of wacke doesn't seem to know where it is sitting and wants to move down instead of up.

Gary   

[gburk]

Art

Sorry for all the messages..

I ran a few more test this morning..

The touch probe that has a high signal till its hit, seems to work fine I ran 10 Z touch offs and with no problems back off was good no crashes thank goodness tips are expensive...

It seems the problem is doing a tool touch off to a touch plate, my touch plate is set to low signal.
If I run the z probe hold the plate in my hand and tap the tool it seems to work every time.
But when I place the tool plate on the top of the part solid surface, is when it messes up probe hits and stops like it should but doesn't reverse instead of reversing it plunges down crashes, I'm using a gnd signal for the probe..
all tests were run with the same script..
Touch off plate is isolated.

both probes go to the same connector on the BOB, haven't taken the touch probe apart so not sure of it setup but must be grounded till hit.
don't see how to do that with a solid touch plate..
Endless timing needs to be fast when its hit..
Also the feed rate still doesn't seem to change correct if I set it to 5 it shows 10 or more in the feed rate dro 
I'm not sure what to do now

Gary

[ArtF]

Sorry Gary, Hurricane had me out of power for awhile..

So the touch probe works.. but the touch plate doesnt? But it does when its in your hand..
Just not when its on the part. Your stumping me as to cause. Must be some sort of ground loop
where your 0vdc isnt the same as ground at that point. You must be in a bit of a floating
ground at that point maybe? What does a meter say across the probe when jogged down to touch it?


  Ill check the feedrate display when changed, what command are you using to change it?
A Gcode command or a SetFeedRate command? Or a Feedrate = xxxx type of thing..

Art

[gburk]

art

So you got the hurricane and it missed me sorry. I know what its like not to have power have lost it for over a week a couple times wouldn't mind but when it 95 and no air real tuff to handle..

I found a work around for the Feed rate I removed it form the Engine.GCode and added the Engine.FeedRate() at that seems to set the correct feedrates now.
I don't thing the Feed rate is a problem when running a gcode file only seemed to happen in a script.

Also I seem to have a new problem, here go's if I use auggies jog panel and jog to say .6256 then I zero the axis.
Now I use my jogging panel and set it to travel .02 and hit the jog button the first move is to .6256 and not to .02 the second move will be correct and only move .02 I know it doesn't make sense, telling it to move .02 and jogging to the last jogged position..

as for the probe you have it right holding the plate in air works fine.
I have it attached to a .250 piece of plastic. hoping to isolate it..
The probe does trigger when hit going down and it does stop moving, I have a 0.04 sleep there it seems to get confused and doesn't reverse direction and I don't think it is backing off to invert the probe signal

Thanks gary 

[ArtF]

Gary:

  I think I see the pattern. It has to do with the GCode interpreter not knowing where it is after a script move.
When you issue a G1X.5, it really translates to G1X.5 Y(LastknownY) Z(LastKnownZ)..etc..

  When running Gcode it knows last position, apparently Im missing the resyncing on some script calls.
A Engine.GCode call should get position synced at this point.  After a probe the position should
also be synced. Keyboard jog will sync as of a version or two back, so by your description it may be the zero
axis that isnt. How are you zeroing it? On the screen button?

  Ill check why a Engine.Gcode didnt sync your feedrate as well. Sorry for all these bugs but we havent been
interupting Gcode for script runs till you started along your path. We'll catch them one by one..

Art

[gburk]

Art

Thanks hope I'm not being to much of pest, seems for the most part that auggies has been working for what it was intended till I had to mess things up ???

As far as zeroing the axis I am using the button when jogging.. probing I am setting the position in the script
but if I do a Z touch off with the button, and then Zero the axis with the button I don't see the dro move to the wrong distance,  endless when I zero the axis after the z probe its messes something up I can't see?.

I added the Engine.Feedrate() to the probing and that's seems to set it correctly just in the Engine.GCode from a script is where I see the problem..

I made a new wire for the touch off probe but didn't seem to fix it plunging down after the probe hit...

Its may work one time correct then crash on the next 3 runs.. then work correct, I tried feedrates from 5 to 100 not much of a change..

Thanks gary

[gburk]

Art

Messed with the probe some more, did the probe plate touch in air holding with my hand again
It also messes up if you don't just tap the tool with the plate if you hold the plate so it contacts the plate for any longer than a tap and remove it does the same thing as if plate on top of part..

so from I can see now is if the plate is triggered and not released in a few m seconds it doesn't reverse and release the signal and then retract, it instead plunges down

if you tap and release the plate real fast in air its ok.. Not sure how to correct this on my end seems like some sort of timing problem..

Hopefully this is correct let me know you thoughts on this..

Gary 

[ArtF]

Gary:

Isnt that timing in your scripts? As I recall Auggie only probes to the hit and stops.
So after the hit, the script changes the direction and the probe trigger level, then commands
a move away from the plate. Did you put any prints in there to see if the commands to
reverse are in proper order. It may be for example, that your probe for some reason see's
the hit and stops, but then the hit is released as capacitance in the circuit builds
up a charge so it no longer see a short. I can see where that may screw up the logic of a
script if it checks for the hi or low before changing direction. If the hit only makes it a short
for a short while until it charges up, then the move away may just not move at all as it sees
the reverse probe move as complete. All Auggie will do is probe till hit , whatever hit is defined as..
a short or an open..

Art


  Im not sure anymore what logic was used for the probing in the scripts. Print
statements may help find out whats going on in this one..

Art