Flashed 2.03

PT1000 on C gives approx 1.1V and Error shorted sensor. Disconnecting the sensor gives a different error. Seems I am on the right port.

@DeltaCon

Indded that's what I suggested. AFAIK you could specify a lower frequency if your laser allows modulation this way. I'd rather use this as a discrete output to turn the laser on and off.

I am going to finish my machine using the Duet Maestro board. I have a 43mm mount where I want to mount e.g. an extruder or laser.

Can I use the heater pin to control the laser? Of course with a different configuration loaded.

Were can I recall the firmware version. Is one of the latest.

My actual HomeAll.g

G91 ; relative positioning

M584 Z2 U3 V4 ; split Z
G1 H1 Z5 U5 V5 F1800 ; move Z, U and V up until the endstop is triggered

G1 H1 X240 Y200 Z150 U150 V150 F1800 ; move quickly to X or Y endstop and stop there (first pass)

M584 Z2:3:4 ; Join Z, U, V
G90 ; absolute positioning

Works like expected until the X or Y endstop is hit and then gives more speed to the remaining X or Y homing. Yet I did not figure if or how it is related to Z axis.

Many thanks to all. I guess I got it.
The x8 is a relic from the time I used TB6600s for the Z Axis and is just preliminary. I will change this later. Wish I would be that far already.

This is the console output for M119. How do I associate the endstops to the axis and tell min or max endstop?

M119
Endstops - X: not stopped, Y: not stopped, Z: at max stop, U: at min stop, V: not stopped, Z probe: not stopped

I have three Z steppers called Z, U and V with separate endstops . The V endstop does not work. I changed cable and switch. When I have all endstops lid the V stepper tries to turn. I bet it is a typo. But I cannot find it. One typo I fixed. But this didn't do the trick.

; Configuration file for Duet Maestro (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2 on Sun Aug 04 2019 20:08:20 GMT+0200 (Central European Summer Time)

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

M667 S1 ; Select CoreXY mode

; Network
M550 P"My Printer" ; Set machine name
M551 P"7072560" ; Set password
M552 P192.168.1.10 S1 ; Enable network and set IP address
M553 P255.255.0.0 ; Set netmask
M554 P0.0.0.0 ; Set gateway
M586 P0 S1 ; Enable HTTP
M586 P1 S1 ; Enable FTP
M586 P2 S1 ; Enable Telnet

; Drives
M569 P0 S0 ; Physical drive 0 goes backwards
M569 P1 S1 ; Physical drive 1 goes forwards
M569 P2 S0 ; Physical drive 2 goes backwards
M569 P3 S0 ; Physical drive 2 goes backwards
M569 P4 S0 ; Physical drive 2 goes backwards
M569 P5 S1 ; Physical drive 5 goes forwards
M569 P6 S1 ; Physical drive 6 goes forwards
M584 X0 Y1 Z2 U3 V4 E5:6 ; Apply custom drive mapping
M671 X380:0:0 Y120:240:0 ; leadscrews at rear middle, front left and front right

M350 X8 Y8 Z8 U8 V8 E8:8 I0 ; Configure microstepping without interpolation
M92 X160.00 Y160.00 Z1600.00 U1600.00 V1600.00 E635.69:635.69 ; Set steps per mm
M566 X900.00 Y900.00 Z90.00 U90.00 V90.00 E120.00:120.00 ; Set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z300.00 U300.00 V300.00 E1200.00:1200.00 ; Set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z1.00 U1.00 V1.00 E250.00:250.00 ; Set accelerations (mm/s^2)
M906 X800.00 Y800.00 Z1600.00 U1600.00 V1600.00 E800.00:800.00 ; Set motor currents (mA)
M84 S0 ; Disable motor idle current reduction

; Endstops
M574 X0 Y1 Z2 U3 V4 S0 ; Set active low and disabled endstops

; Join Z Axis
M584 Z2:3:4 ; Join Z, U, V

; Axis Limits
M208 X0 Y0 Z0 U0 V0 S1 ; Set axis minima
M208 X200 Y160 Z160 U160 V160 S0 ; Set axis maxima

; Z-Probe
M558 P5 H5 F120 T6000 ; Set Z probe type to switch and the dive height + speeds
G31 P500 X0 Y0 Z2.5 ; Set Z probe trigger value, offset and trigger height
M557 X0:200 Y0:160 S20 ; Define mesh grid

; Heaters
M305 P0 X500 R ; Configure PT1000 for heater 0
M143 H0 S90 ; Set temperature limit for heater 0 to 90C

; Fans

; Tools
M563 P0 D0 ; 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
M563 P1 D1 ; 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 saving after power loss is not enabled

; Custom settings
M555 P2 ; Set output to look like Marlin

; Miscellaneous
T0 ; Select first tool

and

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v2 on Sun Aug 04 2019 20:08:21 GMT+0200 (Central European Summer Time)
G91 ; relative positioning
G1 Z5 F6000 S2 ; lift Z relative to current position
M584 Z2 U3 V4 ; split Z
G1 S1 Z165 U165 V165 F1800 ; move Z, U and V up until the endstop is triggered
M584 Z2:3:4 ; Join Z, U, V

Cross talk? One cable is running closer to the stepper cable? Switching of the stepper might cause large transients. I assume the filtering capacitors on the thermocouple board are way to small. I do not know how to put a shield on the thermocouple cable since it has two different wires and the end at thermocouple board makes the cold junction opposed to the hot junction at the heating block.

I just viewed the picture of the product. They omitted the capacitors at all. Works fine on production test, but not in real world.

This is the chip in the black boxes:

1_1564651639261_TB67S109AFTG_datasheet_en_20140327.pdf 0_1564651639261_TB67S109AFTG_application_note_en_20170922.pdf

The opto coupler in those TB6600 are a mess. I read from many people that they had problems and from supporters, that those TB6600 take the most support effort. I pulsed them with an AWG (Waveform Generator) and hat lost steps at constant rate. Note: You need to discharge the LED in an opto coupler to minimize pulse width distortion. It seems the protection circuit in those drivers prevents this, what leads to lost steps. This could also explain why accellaration works fine because the DC point might get shifted.

The transfer ratio of these opto couplers is very bad. This might result in the fact, that even if you are overloading the controller you do not have enough current to drive them propperly.

I know they are only EUR6.00 in China. Adding the same amount of money for quality couplers make them work. But at this point the difference to the dual stepper add on board is not very much. You should consider how much money your life time is worth while. Meanwhile I see the mod as a proof of concept and hopefully get the add on cards today by DHL Express.

Thanks to all

Just deleting the R does the trick. I read somewhere that on newer boards the defaults are OK.