Help please I'm using Arduino Uno with V3 shield and when I connect my Z probe it triggers hard limit has been triggered.
I had this problem with the cheap Chinese Uno and have swapped to the one made in Italy.
All my end stop work fine and it homes well.
Like I said my z probe triggers hard limit and this does not make any difference on if I clip the alligator clip or the base to the bit it still triggers it. I have made sure my Z probe is connected to the scl pin on the shield.
Any ideas please.
One idea is to read and follow the instructions in the "How to get the best out of this forum" post.
That way forum members would have a chance of guessing what you are actually doing, and what the problem might be.
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We only know what you tell us, and at the moment without further explanation what you tell us makes no sense at all.
What alligator clip, where is it going to?
What is the base and the bit?
What still triggers?
As a bare minimum we need to see your code and a schematic.
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Ok here we go the alligator clip clips onto the router bit and this is where I'm having problems because it triggers the hard limit. I believe the Z probe should not trigger a hard limit.
I will show my Code tomorrow and a Picture of my wiring as well.
It sounds like the frame and chuck / bit of the router are grounded- regardless of the connected project.
Hey thank yes everything is grounded back to the shield, could this be the problem I'm having?
If the croc clip is left floating (not touching anything), what reading do you get.
Nothing at all everything works well. I just want to use the Z probe because it's more accurate.
In previous response, I think you have the solution… your grounded chuck and bit are giving you a false detection.
You need to isolate the z-sensor from the grounded chassis , sit the limit ‘touch,’ is different thantnthe ‘no-touch condition.
$0 = 10 (Step pulse time, microseconds)
$1 = 25 (Step idle delay, milliseconds)
$2 = 0 (Step pulse invert, mask)
$3 = 0 (Step direction invert, mask)
$4 = 0 (Invert step enable pin, boolean)
$5 = 0 (Invert limit pins, boolean)
$6 = 0 (Invert probe pin, boolean)
$10 = 115 (Status report options, mask)
$11 = 2147483.648 (Junction deviation, millimeters)
$12 = 0.002 (Arc tolerance, millimeters)
$13 = 0 (Report in inches, boolean)
$20 = 0 (Soft limits enable, boolean)
$21 = 1 (Hard limits enable, boolean)
$22 = 1 (Homing cycle enable, boolean)
$23 = 3 (Homing direction invert, mask)
$24 = 100.000 (Homing locate feed rate, mm/min)
$25 = 400.000 (Homing search seek rate, mm/min)
$26 = 250 (Homing switch debounce delay, milliseconds)
$27 = 8.000 (Homing switch pull-off distance, millimeters)
$30 = 1000 (Maximum spindle speed, RPM)
$31 = 0 (Minimum spindle speed, RPM)
$32 = 0 (Laser-mode enable, boolean)
$100 = 396.907 (X-axis travel resolution, step/mm)
$101 = 399.571 (Y-axis travel resolution, step/mm)
$102 = 397.804 (Z-axis travel resolution, step/mm)
$110 = 2000.000 (X-axis maximum rate, mm/min)
$111 = 2000.000 (Y-axis maximum rate, mm/min)
$112 = 1200.000 (Z-axis maximum rate, mm/min)
$120 = 300.000 (X-axis acceleration, mm/sec^2)
$121 = 500.030 (Y-axis acceleration, mm/sec^2)
$122 = 50.000 (Z-axis acceleration, mm/sec^2)
$130 = 500.000 (X-axis maximum travel, millimeters)
$131 = 600.000 (Y-axis maximum travel, millimeters)
$132 = 80.000 (Z-axis maximum travel, millimeters)
Here is my settings
I have taken that earthing off and what I'm getting now when I try to probe is down about 1 mm and then normal retraction. I mean it's not going down to touch the plate and I know it's in my setting but which one.
Needs to be said I don't know much about all his stuff I've been trying to learn by trial and error.
Unfortunately, that only goes so far.
I’m not familiar with what you’re doing, my thoughts so far are based on experience with electronics and computer controllers.
I now enough to be dangerous with electronics so not much really.
Ok so what I have done now is taken away any earthing from the shield to the machine or the router, rechecked my wiring from the shield all the way through to the plate and clip and found I had a wire wired wrong on my plug changed that.
So now it's working fine I can connect the clip probe and all is well so to speak.
If I'm slow with the clip it now triggers the hard limit warning so I think it's could be in the timing.
I hope this makes it a bit clearer for you.
sort of - not really !
It’s hard, because we’re not looking or touching the same things you are, but it sounds like you’re getting closer!
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