Duet 3 mini 5+ wifi sensorless homing - Help

Karim

@moth4017 Hey no I did try M201.1, I been working on this printer for two weeks now trying to get sensor-less homing to work properly . I have two duet 2 wifi with duex5 and they working flawlessly. I know what you are saying about homing, I have to home x and y separately then home all works it’s a hit or miss.

moth4017

@Karim hi, testing tonight , if i turn down the acceleration while homing it stall less, M201.1 X800 Y800 remember to put the values back after homing.

i was at , M201.1 X1200 Y1200

dc42

@Karim said in Duet 3 mini 5+ wifi sensorless homing - Help:

It’s just the first power up and home all stalls on X axis

Try using a G1 H2 move to move the motors a few mm away from the endstops at the start of homeall.g or at the start of homex.g and homey.g. That should clear the stall status.

moth4017

@dc42 Hi, i tried doing the small move first this didnt work for me , it stalled the "first moved" but moved on the second time.

; homex.g
echo "home x stelh chop mode"
M569 P0.0										; Check status in console
M569 P0.1										; Check status in console
G91                                             ; relative positioning
M569 P0.0 S1 D3 V10                             ; set to stealth chop
M569 P0.1 S1 D3 V10								; set to stealth chop
M915 P0.0 S10 F0 R1 H150                   		; Configure Z-Axis Stall Detection 
M915 P0.1 S10 F0 R1 H150						; Configure Z-Axis Stall Detection 
M201.1 X800 Y800 
echo "stall detection setup"
M17 X Y											; Check status in console
G1 P140											;pause to allow the drivers to characterise the motor    
G1 H1 X-0.2 F3000								; move a  little  for cal of sensorless homing / not stalled
G1 H1 Y-0.2 F3000    							; move a  little  for cal of sensorless homing / not stalle							

echo "lower motor current"
M913 X30 Y30									; Lower motor current %
G4 P150											; wait 150ms
M574 X1 Y2 S3									; Configure Z-Axis stall detection homing
M569 P0.0										; Check status in console
M569 P0.1										; Check status in console
		
echo "home x"
G1 H1 X-350 F6000
G1 H2 X10 Y10
G1 H1 X-350 F6000
G1 H2 X10 Y10; Home Z-Axis actuators independently
M569 P0.0										; Check status in console
M569 P0.1										; Check status in console
G90 											; absolute positioning
;G1 X150 F6000									; move to center of bed

;revert back 
echo "after revert back"
M915 P0.0 S128 F0 R1 H550                   		; Configure Z-Axis Stall Detection 
M915 P0.1 S128 F0 R1 H550						; Configure Z-Axis Stall Detection 
M913 X100  Y100									; Reset motor current %
M569 P0.0 S1 D2									; reset motors back to spread cycle,
M569 P0.1 S1 D2									; reset motors back to spread cycle,
M569 P0.0										; Check status in console
M569 P0.1										; Check status in console
M201.1 X1200 Y1200

dc42

@moth4017 try a longer move such as 1mm and use H2 not H1 in those moves. It needs to be more than 1 full step, or more than 4 full steps if you are using the filtering option in M915.

moth4017

@dc42 Hi tried the H2 and changing distance moved , 1mm = 10 full steps on my printer , but still have random stalls on the Y axis so far .

dc42

@moth4017 said in Duet 3 mini 5+ wifi sensorless homing - Help:

but still have random stalls on the Y axis so far

Are they stalls right at the start of the homing move (i.e. immediately after your 1mm G1 H2 move), or stalls part way through the homing move? If they are right at the start then try lower M201.1 values e.g. X300 Y300.

Which firmware version are you using?

moth4017

@dc42 3.5.0 beta2. The stall is after the small movement

Karim

@moth4017 Mine stall at first homing, X would stall, but if you get X to home successfully. Home all work every time, but if printer is power off overnight in the morning you have to go through that procedure again.

moth4017

@dc42 Did some testing tonight setting M201.1 to x300 y300 seems to be working at the moment , ill keep an eye on it over the weekend

Karim

@moth4017 Which printer do you have , This is a Voron 0.2 Corexy.

moth4017

@Karim core XY valkyrie
https://vkingprinter.com/project-valkyrie/

dc42

@moth4017 said in Duet 3 mini 5+ wifi sensorless homing - Help:

@dc42 3.5.0 beta2. The stall is after the small movement

Try using M201.1 to reduce the acceleration during homing.

Karim

@moth4017 Very nice Printer, I never heard of it.

Karim

@Karim This is my X Axis homing, it's not stalling now .I will let you know if this is working.

====================
; homeX.g
;====================
; called to home the X axis

M84 X
M400						    ; Wait for current moves to finish
M569 P0.1 D3 V10				; X -> B axis reduce V parameter so driver operates in stealthChop
M569 P0.2 D3 V10				; Y -> A axis reduce V parameter so driver operates in stealthChop
G4 P200						    ; Pause for 200ms to let StealthChop do some sh!t
M17 X						    ; Energize Motors X Y
M913 X20 Y20				    ; drop motor current to 20%
G4 P200						    ; Pause for 200ms to let StealthChop do some sh!t
M915 X S20 R0 F0 H200	        ; Sensitivity 9 [-64 --> 64], R - take no action, F - No filter, 200steps/sec
M201.1 X250 Y250 
G4 P200						    ; wait 200ms
G91					            ; set relative

M400                            ; Wait for moves to finish
G1 H2 X-1 F3000                 ; Move X axis back a little bit to clear stall flag if it's triggered

M400                            ; Wait for moves to finish
G4 P200						    ; wait 200ms
G1 H1 X350 F3500			    ; [ First Pass ] move quickly to X axis endstop and stop there
M400

G90						        ; absolute positioning
M400						    ; Wait for current moves to finish
M913 X100 Y100				    ; return current to 100%
M569 P0.1 D2					; Take driver out of StealthChop Mode
M569 P0.2 D2					; Take driver out of StealthChop Mode

M201.1 X650 Y650

moth4017

@dc42

I had a whole weekend without a stall for the first time ,

Thanks everyone

;homey.g
												
echo "Home Y"
M569 P0.0										; check status in console Y
M569 P0.1										; check status in console X
G91												; Relative positioning
M569 P0.0 S1 D3 V10                             ; set to stelth chop
M569 P0.1 S1 D3 V10								; set to stelth chop
M915 P0.0 S10 F0 R1 H200						; Configure y-Axis Stall Detection
M915 P0.1 S10 F0 R1 H200                    	; Configure x-Axis Stall Detection
M201.1 X300 Y300 
echo "stall detection setup"
M17 X Y	
G1 P140

G1 H2 X-1 F3000                               ; move a  little  for cal of sensorless homing / not stalled
G1 H2 Y-1 F3000    							; move a  little  for cal of sensorless homing / not stalled

echo "lower motor current"
M913 X60 Y60									; Lower motor current %
G4 P150
M574 X1 Y2 S3                           		; Configure Z-Axis stall detection homing
M569 P0.0										; check status in console
M569 P0.1										; check status in console

echo "Home Y"
G1 H1 Y350 F6000
G1 H2 X-10 Y10
G1 H1 Y350 F6000                       			; Home Z-Axis actuators independently											
M569 P0.0										; check status in console
M569 P0.1										; check status in console
G90 											; absolute positioning
G1 Y150 F6000									; move to center of bed		

;revert back 
echo "after revert  back"
M915 P0.0 S128 F0 R1 H550						; Configure x-Axis Stall Detection
M915 P0.1 S128 F0 R1 H550                    	; Configure x-Axis Stall Detection
M913 X100  Y100                               	; Reset motor current
M569 P0.0 S1 D2                                 ; reset motors back to spread cycle,
M569 P0.1 S1 D2									; reset motors back to spread cycle,
M569 P0.0										; check status in console
M569 P0.1										; check status in console
M201.1 X1000 Y1000

moth4017

@dc42 Mark as solved ... i think

Phaedrux

What did you end up changing to get it right?

moth4017

@moth4017 i added the M201.1 x300 y300 just before the stall detection setup

Karim

@moth4017 I don’t know what’s going on with my setup because mine works for a few days and the have homing problems and then works again, I guess it’s have to deal with it the way it’s working.