SOLVED: Precision Orion Sensor triggers too late

  • SOLVED: The Orion was not working properly, after switching the whole Orion board everything works as expected!

    Hello there,

    I am having a problem with the Piezo Orion sensor, it looks like it does not react fast enough or is not sensitive enough-ish...

    I am having a Duet WiFi board and I am using a genuine Precision Orion sensor as my Z-endstop. I tuned the little potentiometer so that a real light tap with my fingernail forces it to respond, so I figured the tap of the nozzle on the Ultrabase would do the same, well it doesn't.
    Instead of triggering reliably it bends the whole gantry upwards, sometimes about 0.8mm sometimes over 2mm until it triggers, or not.

    Firmware Name: RepRapFirmware for Duet 2 WiFi/Ethernet
    Firmware Electronics: Duet WiFi 1.02 or later
    Firmware Version: 2.0(RTOS) (2018-06-05b3)
    WiFi Server Version: 1.21
    Web Interface Version: 1.21.1

    Please see the relevant parts of my config:

    ; Drives
    ; just to clarify Z actually is allowed to travel the 420mm/min
    M203 X12000 Y12000 Z420 E6000 ; Set maximum speeds (mm/min)

    ; Endstops
    M574 Z1 S2 ; Set endstops controlled by probe (Z-endstop is Z-probe)

    ; Z-Probe
    M558 P8 I1 H1 R0.5 F420 T6000
    G31 P100 X0 Y0 Z-0.1

    G91 ; relative positioning
    G1 Z5 F6000 S2 ; lift Z relative to current position
    G90 ; absolute positioning
    G1 X150 Y150 F6000 ; go to first probe point
    G30 ; home Z by probing the bed

    I can't really make the sensor any more sensible, otherwise it will trigger due to movement and on the same time am running out of ideas. Any help is highly appreciated!


  • administrators

    I don't know the Orion, but is F420 in your M558 command the recommended probing speed, or should it be higher?

  • @dc42 Thanks for your response, the problem is meanwhile resolved. I swapped the whole PCB for a second unit I bought along with the first one and that one works as expected. The nozzle touches the bed very gentle and the probing shows immediate response. I will send precisionpiezo an e-mail regarding the non-functional unit.

    Cheers, Markus

  • @toskium I've replied to your email, I'll send you a replacement PCB today.