Connecting Precision Piezo Z Probe Help



  • Hello everyone. I've been working on trying to get a zprobe working on my duet for months now. I initially started with a BLT, but I never managed to get the Duet to detect the probe when it hit. So, since duet was new, and I dropped BLT twice on the floor, I assumed my BLT was bad and decided to order a Precision Piezo Orion.

    (It basically acts as a switch as far as the config.g is concerned)

    I did all the wiring properly and tested it, but for some reason the detected status was inverted. I did try adding I1 to the end of the code, didn't change anything. I assumed my FW was buggy so I updated it. Now I1 seems to invert the reading, the problem is now triggering the sensor does nothing (the reading doesn't change). It was definitely working before the update of the FW. Is there a bug in 1.21 about this, or a problem in my config.g? I updated from 1.19

    Here is the relevant part of my config.g:

    M574 Z1 S2
    M558 P5 H5 I1 F240 T6000
    G31 P600 X0 Y0 Z0
    M557 X25:345 Y25:225 S100



  • I haven't used the M574 command to set mine, this is what I have & it works ok:

    M558 P8 I1 R0.3 F300 X0 Y0 Z0 ; Set Z probe type to effector and the dive height + speeds
    G31 X0 Y0 Z-0.1 P100 ; Set Z probe trigger value, offset and trigger height



  • @xbst : where did you connect the probe to the board?
    In your case, you must use the zprobe connector...



  • @dr_ju_ju said in Connecting Precision Piezo Z Probe Help:

    I haven't used the M574 command to set mine, this is what I have & it works ok:

    M558 P8 I1 R0.3 F300 X0 Y0 Z0 ; Set Z probe type to effector and the dive height + speeds
    G31 X0 Y0 Z-0.1 P100 ; Set Z probe trigger value, offset and trigger height

    I forgot to mention. I am using a cartesian printer. That looks like Delta code to me.

    @whosrdaddy said in Connecting Precision Piezo Z Probe Help:

    @xbst : where did you connect the probe to the board?
    In your case, you must use the zprobe connector...

    I had it connected to the Z endstop connector. I didn't even know z probe connector existed since BLT guide I used said to connect to Z endstop, I assumed that was the general connector for a probe. I just swtched to p7 in config.g. I feel like an idiot. Thanks for your help.



  • As long as its working, that's all that counts..


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