Piezo Settings

57buick

I'm using the Orion Piezo sensor on my hypercube build, so it uses the nozzle as the probe. I have it set so that I can see under machine properties that it is changing to yes for a split second every time I tap the nozzle with my finger, but when I do a homeall and I tap the nozzle the bed does not stop moving.

What am I missing? I'll post my files below

57buick

; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2 on Mon May 20 2019 16:31:14 GMT-0700 (Pacific Daylight Time)

; General preferences
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves

M667 S1 ; Select CoreXY mode

; Network
M550 P"DaveHevo" ; Set machine name
M552 S1 ; Enable network

M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Drives
M569 P0 S0 ; Physical drive 0 goes forwards
M569 P1 S0 ; Physical drive 1 goes forwards
M569 P2 S0 ; Physical drive 2 goes backwards
M569 P3 S0 ; Physical drive 3 goes forwards
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E420.00 ; Set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00 ; Set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z180.00 E1500.00 ; Set maximum speeds (mm/min)
M201 X3000.00 Y3000.00 Z20.00 E10000.00 ; Set accelerations (mm/s^2)
M906 X1000.00 Y1000.00 Z1200.00 E800.00 I50 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1 ; Set axis minima
M208 X568 Y498 Z700 S0 ; Set axis maxima

; Endstops
M574 X1 Y1 Z1 S0 ; Set active low endstops

; Z-Probe
M558 P8 Z1 I1 R0.4 F300 X0 Y0 Z1 ;analogue mode,NC, delay, speed, used as axis endstop
G31 X0 Y0 Z-.2 P600 ; Set Z probe trigger value, offset and trigger height
M557 X10:5 Y15:195 S20 ; Define mesh grid

; Heaters
M305 P0 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S120 ; Set temperature limit for heater 0 to 120C
M305 P1 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S280 ; Set temperature limit for heater 1 to 280C

; Fans
M106 P0 S0 I0 F500 H T45 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P1 D0 H1 ; Define tool 1
G10 P1 X0 Y0 Z0 ; Set tool 1 axis offsets
G10 P1 R0 S0 ; Set initial tool 1 active and standby temperatures to 0C

; Automatic power saving
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss

; Custom settings are not configured

57buick

; homeall.g
; called to home all axes
G91 ; relative mode
G1 S1 X-240 Y-240 F3000 ; coarse home X or Y
G1 S1 X-240 ; coarse home X
G1 S1 Y-240 ; coarse home Y
G1 X4 Y4 F600 ; move away from the endstops
G1 S1 X-10 ; fine home X
G1 S1 Y-10 ; fine home Y
G1 X250 Y250 F6000 ; go to first bed probe point and home Z
G30 ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
;G91 ; relative positioning
;G1 S2 Z5 F100 ; lift Z relative to current position
;G90 ; absolute positioning

57buick

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v2 on Mon May 20 2019 16:31:15 GMT-0700 (Pacific Daylight Time)
G91 ; relative positioning
G1 Z5 F6000 S2 ; lift Z relative to current position
G90 ; absolute positioning
G1 X250 Y250 F6000 ; go to first probe point
G30 ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
;G91 ; relative positioning
;G1 S2 Z5 F100 ; lift Z relative to current position
;G90 ; absolute positioning

dc42

Can you confirm that you have connected the piezo to the Z probe connector on the Duet, not the Z endstop input?

grizewald

I think I can see what's wrong.

You have your Z end stop misconfigured. Your setup says:

; Endstops
M574 X1 Y1 Z1 S0 ; Set active low endstops

I also use the Orion on my V-Core and it is set up like this:

; Endstops
M574 Y1 X1 S0 ; Set active LOW endstops for X and Y at minimum

; Z-Probe
M574 Z1 S2 ; Z end stop is probe at low value
M558 P8 R0.4 I1 H5 F360 T6000 ; Set Z probe type to inverted, unfiltered piezo and the dive height + speeds
G31 P500 X0 Y0 Z-0.02 ; Set Z probe trigger value, offset and trigger height
M557 X5:290 Y5:280 P14 ; Define mesh grid

Note the second M574 which defines the Z end stop as being a Z probe (S2 parameter). My Orion is connected to the Z-probe input on the Duet WiFi.

grizewald

Oh, you'll also find it's a good idea to uncomment the parts of homeall.g and homez.g which lift the head again after probing. Otherwise, you risk scraping the nozzle over your bed on the next move.

dc42

@grizewald said in Piezo Settings:

Note the second M574 which defines the Z end stop as being a Z probe (S2 parameter). My Orion is connected to the Z-probe input on the Duet WiFi.

Actually, that isn't needed, provided that you home Z using a G30 command, which is the correct way to home Z using a Z probe, and what @57buick is doing.

grizewald

@dc42 said in Piezo Settings:

@grizewald said in Piezo Settings:

Note the second M574 which defines the Z end stop as being a Z probe (S2 parameter). My Orion is connected to the Z-probe input on the Duet WiFi.

Actually, that isn't needed, provided that you home Z using a G30 command, which is the correct way to home Z using a Z probe, and what @57buick is doing.

Ah, OK. It certainly isn't harming anything though.

In 57buick's configuration, his Z end stop is included in the same M574 command that has S0 as the parameter. If this works, then what's the point of the S2 parameter to M574?

dc42

@grizewald said in Piezo Settings:

In 57buick's configuration, his Z end stop is included in the same M574 command that has S0 as the parameter. If this works, then what's the point of the S2 parameter to M574?

The S2 parameter is needed for printers such as the RepRapPro Ormerod and Huxley Duo, because those printers use a single IR sensor to home both X and Z. So S2 is used in the M574 X command.

57buick

@dc42 said in Piezo Settings:

Can you confirm that you have connected the piezo to the Z probe connector on the Duet, not the Z endstop input?

OMG, Yes I was installing my X and Y endstops at same time and I plugged the piezo into the Z stop instead of the Z probe port, thank you, it's working now