Z Probe trouble (Solved)
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The output of the Pinda should be connected to Z_Probe_In. The reading should be zero when the probe is not triggered, and a high value (normally 1000) when it is triggered. If you find that it is reversed, add or remove parameter i1 to the M558 command. See https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe.
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Just so I'm starting out right I have configured in the REPRAP configuration for "Simple modulated IR Probe".
The M558 command did not have I1 in it so I added it at it looks like this "M558 P2 H5 I0 F360 T6000" When I put the "I1" the Z-Probe reading shows "1000 (948)" so I switched it to "I0" as shown above in the M558 Code, then it reads "0 (948).
The Z-probe is connected to the "Z_Probe-Mod" and the light on the Pinda probe is lit up. When I put a metal object to it the light goes out but the value displayed does not change.With the wiring hooked to the "Z_Probe_In" the light does not illuminate on the Pinda Probe. The Z Probe reading shows "0 (885)" with the "M558 P2 H5 I0 F360 T6000". When the "I0 is changed to "I1" the z-probe reads "1000 (885)"
In all the configurations I have tried I cannot get the values of the Z-Probe to change when trying to trigger the probe with a metal object.
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@pc-6 said in Z Probe trouble:
The Z-probe is connected to the "Z_Probe-Mod" and the light on the Pinda probe is lit up. When I put a metal object to it the light goes out but the value displayed does not change.
As dc42 says it should be connected to Z probe In.
Also its not a modulated IR probe but an inductive probe:
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I have now connected to the "Z_Probe_in" (Light on the probe is off) and changed the M558 P5 H5 I1 F360 T6000 and still cannot get Probe to trigger. Z Probe reading always at 0
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@pc-6 Do you have a v1.04 board then? If not, then that link that @T3P3Tony posted up indicates that for a capacitive sensor like that, you need a diode.
I'm more watching this, as I am looking at different possibilities for a Z probe on my MakerBot clone printer. I have a piezo Z probe on my leadscrew printer, which works pretty much as expected, but I have a capacitive sensor that I'm thinking of using. In my case, I have a v1.03 board, so I'd definitely need the diode.
Pictures of your connection and probe may help people diagnose it.
You say that the probe does not light up. There should be a minimum of 3 wires going to the probe. It ought to have +Vcc, Ground, and a signal wire. +Vcc should be connected to an approprieate voltage source, as dictated by your probe's documentation. It seems that the Pinda probe should operate on 5V, so it is not appropriate to run this from the +Vcc on the Z probe connector, as this is 3.3V. You should be able to grab +5V from the PanelDue connector next to the Z probe input. You can use the ground and IN pins from the Z Probe connector though.
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I do have the 1.04 board. The light will illuminate if I plug the signal into the Z_PROBE_MOD but this is not the correct location, when it is in the Z_PROBE_IN is when it does not light up. I am pulling 5V power from the V Fan Jumper because I have a PanelDuo attached.
A picture of it is not very realistic as it is installed in a case with a huge mass of wires making it exceedingly difficult to photograph ( I tried and I can discern much from the photo) and the Probe is from a Prusa MK2s, (Not much to look at) -
Are you certain that you don't have the connections to the Ground and Out wires swapped? What colours are those wires?
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@pc-6 googlein this a bit I found:
http://opinionbypen.com/demystifying-the-prusa-pinda/
Does this match your probe?
http://opinionbypen.com/wp-content/uploads/2017/07/PINDA-A.jpg -
Well thank you all for your help. With dc42 suggestion and Link to wiring diagram from T3P3Tony I have it fixed. I had the black and blue crossed. (So much for making black the standard ground or negative).
All is working as it should.Cheers everyone.
Leif -
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