Piezo Z probe problems/ Seeking alternatives !!!

CozyP · 23 Dec 2018, 18:07

No. Only if I hit the G30 S-1 or the Bed Mesh compensation

Phaedrux · 23 Dec 2018, 18:08

Did you move the print head to bed center with the nozzle just touching the bed before doing G30 S-1?

CozyP · 23 Dec 2018, 18:08

Yes, I did exactly as the post you re-directed me dictated

Phaedrux · 23 Dec 2018, 18:10

So it goes from bed center to crash into the x endstop?

CozyP · 23 Dec 2018, 18:10

Yes, exactly

Phaedrux · 23 Dec 2018, 18:11

Can you post your config.g as it is now?

CozyP · 23 Dec 2018, 18:11

; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2 on Sun Dec 23 2018 19:43:56 GMT+0200 (Eastern European Standard Time)

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

; Network
M550 P"THE PRINTER" ; Set machine name
M552 S1 ; Enable network
M587 S"Hector's House" P"2291052862" ; Configure access point. You can delete this line once connected
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Drives
M569 P0 S0 ; Drive 0 goes backwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S0 ; Drive 3 goes backwards
M350 X32 Y32 Z32 E32 I0 ; Configure microstepping without interpolation
M92 X160.00 Y160.00 Z791.50 E1800.00 ; Set steps per mm
M566 X780.00 Y780.00 Z300.00 E840.00 ; Set maximum instantaneous speed changes (mm/min)
M203 X16200.00 Y16200.00 Z420.00 E7200.00 ; Set maximum speeds (mm/min)
M201 X1800.00 Y1800.00 Z6.00 E250.00 ; Set accelerations (mm/s^2)
M906 X450.00 Y950.00 Z1000.00 E1389.00 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 X360 Y660 Z180 S0 ; Set axis maxima

; Endstops
M574 Z1 S0 ; Set active low and disabled endstops
M574 X1 Y1 S1 ; Set active high endstops

; Z-Probe
M558 P5 R0.4 H3 F400 T3600 ; Set Z probe type to effector and the dive height + speeds
G31 P400 X0 Y0 Z0 ; Set Z probe trigger value, offset and trigger height
M557 X0:330 Y0:660 S40 ; Define mesh grid

; Heaters
M140 H-1 ; Disable heated bed
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 S0.5 I0 F600 H1 T45 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P1 S0 I0 F200 H-1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P2 S0 I0 F200 H-1 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off

; Tools
M563 P0 D0 H1 ; Define tool 0
G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
G10 P0 R0 S0 ; Set initial tool 0 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

dc42 · 23 Dec 2018, 18:14

You don't have the i1 parameter in the M558 command, If the sensor is a naked piezo cylinder (which is what it looks like), you must use i1 in that command as I said in my previous email, otherwise you will get the "already triggered" error.

CozyP · 23 Dec 2018, 18:16

@Phaedrux Thank you for taking the time and helping me out.
The truth is, there is so much time lost and solution is not found.

If we accept the fact, that Duet is not compatible with this sensor, what are the other options available???
All I have is a BLclone and mechanical endstop. Bear in mind, I am seeking the easiest solution available, as I just learned G code, previous motherboard was plugNplay

CozyP · 23 Dec 2018, 18:19

@dc42 Just added I1 and the nozzle crashed to bed on mesh compensation.
However, it did home correctly.

; Z-Probe
M558 P5 I1 R0.4 H3 F400 T3600 ; Set Z probe type to effector and the dive height + speeds
G31 P400 X0 Y0 Z0 ; Set Z probe trigger value, offset and trigger height
M557 X0:330 Y0:660 S40 ; Define mesh grid

CozyP · 23 Dec 2018, 18:20

@dc42 While crashing onto the bed, I got this error

G32 Error: Z probe was not triggered during probing move

dc42 · 23 Dec 2018, 18:24

Like I said before, test with the polarity reversed. Also test at different Z probing speeds (F parameter in the M558 command). See https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe for how to test it.

However, a naked piezo cylinder is a very primitive type of Z probe, and reliably operation may be hard to achieve. You might possibly find that P1 in the M558 command along with i0 works better than P8 (again, try both polarities).

Phaedrux · 23 Dec 2018, 18:25

Might want to trigger it by hand while testing rather than wait for it to contact the bed just in case. That way you can kill power if it doesn't trigger as expected.

CozyP · 23 Dec 2018, 18:33

@dc42 Okay, I tried P1 mode while erasing I1 , I didn't get a single error.

However, it crashes onto X endstop for 1sec continuously

CozyP · 23 Dec 2018, 18:47

So, what else can be done??

CozyP · 23 Dec 2018, 18:50

@phaedrux It happened now, will try to do that next time

dc42 · 23 Dec 2018, 20:26

@cozyp said in Piezo Z probe problems/ Seeking alternatives !!!:

@dc42 Okay, I tried P1 mode while erasing I1 , I didn't get a single error.

However, it crashes onto X endstop for 1sec continuously

The X (not Z) endstop? That's a different problem.

CozyP · 23 Dec 2018, 22:03

So, as it seems no solution has been found, duet is incompatible with this piezo sensor. Can a normal mechanical endstop be used?

Phaedrux · 23 Dec 2018, 23:18

You can use an endstop as a simple z axis endstop mounted to the frame, but it would make mesh compensation impossible, unless you did the probing manually (it asks you to job the nozzle to just touch the bed to get z0 at the probe points, which is slow but workable for smaller grids).

Alternatively you can mount the endstop switch to the print head and use it as a probe, but you'd need a mount.

The BLtouch clone may be a good option as well, but also need a mount.

CozyP · 24 Dec 2018, 00:09

@Phaedrux I installed the endstop with silicon heated glue to the heater block for one time.
Connected endstop to Zendstop, ACTIVE HIGH, Zmin

After I home Z, I hit autobed leveling and I get AGAIN problem

G32
Error: Z probe already triggered before probing move started.

Bear in mind my frustration, I have switched to duet after 2 previous motherboards did burn, yet I have the best motherboard available and I cannot start printing.

I tried both M558 P1 and M558 P5, same result.

Thank you for your time and hope you understand me!

; Z-Probe
M558 P1 R0.4 H4 F1200 T3600 ; Set Z probe type to effector and the dive height + speeds
G31 P220 X0 Y0 Z0 ; Set Z probe trigger value, offset and trigger height
M557 X0:330 Y0:660 S40 ; Define mesh grid