@chrishamm Heyy amazing thank you for the update!
Installed 64bit on my Duet3 MB6HC + Rpi3b+ and everything running mighty fine right out the box this time -- no vnc/hdmi shenanigans like with the experimental build.
Hdmi touchscreen feels super snappy too, way more responsive than back on buster, outstanding work, now to push some plastic!
@chrishamm Ok great that definitely did something;
Now I can connect on both RealVNC and TigerVNC... But all I get is a grey screen in both cases 
Such is the case on both duetpi and the official pi release, both updated to latest (I have them both on separate SD cards now to cross test)
HDMI display still shows on official release (still no touchscreen) and black on Duetpi
The search continues
@chrishamm interesting; just flashed latest vanila raspios bookworm and the screen works out of the box (but not the touchscreen?)
Meanwhile I'm unable to access VNC, neither through Tiger or RealVNC with both wayland and X11, even while confirmed running hmm
bump 
couldn't figure it out still 
@chrishamm Ok I just installed it on a fresh card; A couple issues:
My HDMI display shows a black, unresponsive screen after bootup despite showing the Duet bg and boot sequence just fine. Display manager service checked and active
Likewise, VNC is not connecting despite the service being turned on
I have full access through SSH though, through which I performed a git init, remote add and fetch origin in /sd to get my backup from my github backup; all is well, however...
It appears the file permissions are all bonked out; config refuses to load with this message: Error in start-up file config.g line 29: Access to the path '/opt/dsf/sd/sys/eventlog.txt' is denied. >>> This is a know issue I previously sorted out by doing sudo chmod 777 -R /opt/dsf/sd but there has to be a better way right
Any tips on fixing these quirks? Thanks!
@chrishamm woohoo great news, will finally be able to make use of my arducam 
Can the current image be fully upgraded to release when it comes out or will that require reflashing the release image?
@gloomyandy This was my first time updating from the Duet; RC1 was a fresh flash from USB, but yep I'm on Duet3 MB6HC + SBC
Just a heads up, the fw file names appear to be case sensitive, but the https://github.com/gloomyandy/RepRapFirmware/releases repo produces wrong case (Duet3Firmware_FLY36RRF where M997 expects Fly)
This is also erroneous on the docs: https://teamgloomy.github.io/fly_rrf_36_general.html
I've figured simply correcting the case on both .bin and .uf2 made the flash successful
Perhaps have GitHub produce case correct filename and reflect it in the docs for further reference?
Apart from that still happy with the board, thank you!
@jay_s_uk Well I'd be damned; didn't think of removing them but these were indeed tied to my TMC5160 tuning
Also somehow missed that I had M569 set to D3...
Set it back to D2, disabled M915 and it seems to be running like a champ now, thank you very much!
Let's push some plastic now 
@jay_s_uk any thoughts on this?
@KenW yep everything on 3.5.0 RC1
Ye something's definitely wonky; I took the board out, checked again out of circuit, no mo short.
Reinstalled it, extruder spun nicely again.
Homed, heated up and started a new print, first one ran well,
2nd one gave me the over temp error again.
Idk what I'm doing wrong with it; here's my whole config file, if anyone would be kind enough to look through it and help me point out at any funky stuff
;
; ___________ __ .__
; \_ _____/___________ _____/ |______ | |
; | __) \_ __ \__ \ _/ ___\ __\__ \ | |
; | \ | | \// __ \\ \___| | / __ \| |__
; \___ / |__| (____ /\___ >__| (____ /____/
; \/ \/ \/ \/
; ___________ .__ .__
; \_ _____/ ____ ____ |__| ____ ____ ___________|__| ____ ____
; | __)_ / \ / ___\| |/ \_/ __ \_/ __ \_ __ \ |/ \ / ___\
; | \ | \/ /_/ > | | \ ___/\ ___/| | \/ | | \/ /_/ >
; /_______ /___| /\___ /|__|___| /\___ >\___ >__| |__|___| /\___ /
; \/ \//_____/ \/ \/ \/ \//_____/
; General Setup - RailCore RRF on an SBC for Duet3
; General
G21 ; Work in millimetres
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves
M564 S1 H1 ; No movement before homing, no out-of-range
G4 S2 ; wait for expansion boards to start
; Debugging
M111 S0 ; Debug (S0 is off; S1 is on)
M929 P"eventlog.txt" S1 ; start logging to file eventlog.txt
M915 X Y S10 F0 R1 ; log motor stalls
; Stepper Configuration and Trinamic Drive Tuning
M569 P0.0 S1 D3 V5 H5 ; X / Rear - LDO-57STH56-2804MACRC
M569 P0.1 S0 D3 V5 H5 ; Y / Front - LDO-57STH56-2804MACRC
M569 P0.2 S1 D3 V5 H5 ; Z / FL - LDO-42STH47-1684MAC
M569 P0.3 S1 D3 V5 H5 ; Z / RL - LDO-42STH47-1684MAC
M569 P0.4 S1 D3 V5 H5 ; Z / MR - LDO-42STH47-1684MAC
;M569 P5 S0 D2 V5 H5 ; E / Extruder - LDO-42STH25-1004AC
;M569 P5 S1 D2 V5 H5 ; E / Extruder - Biqu H2
;M569 P5 S0 D2 V5 H5 ; E / Extruder - Orbiter 2.0
M569 P124.0 S1 D3 V5 H5 ; E / Extruder - SmorbV3 Toolboard
; Axis configuration
M669 K1 ; Corexy mode
;M584 X0 Y1 Z2:3:4 E5 ; Map X to drive 0 Y to drive 1, Z to drives 2, 3, 4, and E to drive 5
M584 X0.0 Y0.1 Z0.2:0.3:0.4 E124.0 ; Map X to drive 0 Y to drive 1, Z to drives 2, 3, 4, and E to toolboard drive 0
M208 X270 Y290 Z325 ; Set axis maxima and high homing switch positions (adjust to suit your machine)
M208 X-35 Y0 Z0 S1 ; Set axis minima and low homing switch positions (adjust to make X=0 and Y=0 the edges of the bed)
; Stealthchop parameters
M915 P0:1 S3 F1 H153 T20000 R0
M915 P2:3:4 S3 F1 H1652 T1 R0
;M915 P5 S3 F1 H540 T1 R0
M915 P124.0 S3 F1 H540 T1 R0
; Steps/mm (for the default 1/16 microstepping)
M92 X160 Y160 Z1600 ; Axis Steps/mm
;M92 E4206 ; FLEX3DRive
;M92 E932 ; Biqu H2
M92 E690 ; Orbiter 2.0
; Microstepping (independent of M92 above)
M350 X64 Y64 Z16 I1 ; Set 32x microstepping for axes with interpolation
;M350 E8 I0 ; Set 16x microstepping for Flex3Drive extruder interpolation OFF
;M350 E16 I1 ; Biqu H2
M350 E16 I1 ; Orbiter 2.0
; Motor current
M906 X{2800 * 0.65} Y{2800 * 0.65} Z{1680 * 0.65} I30 ; Set PEAK motor currents (mA) and motor idle factor
;M906 E420 I30 ; Flex3Drive
;M906 E800 I30 ; Biqu H2
;M906 E1000 I10 ; Orbiter 2.0 (rated 1 amp, recommended 1.2)
M906 E850 I10 ; Smorb3.0 (rated 1 amp, recommended 1.2)
M84 S30 ; Idle timeout 30s
; Speeds
M203 X15000 Y15000 Z600 E7200 ; Maximum speeds (mm/min) // XY15000(250mm/s), Z600(10mm/s)), E7200 (120mm/s)
; Accelerations and Jerk
M201 X2500 Y2500 Z100 ; Accelerations (mm/s^2)
;M201 E120 ; Flex3Drive
;M201 E5000 ; Biqu H2
;M201 E3000 ; Orbiter 2.0
M201 E3000 ; Smorb 8000mm/s recommended
M566 X800 Y800 Z100 ; Maximum jerk speeds (mm/min)
;M566 E6 ; Flex3Drive
;M566 E300 ; Biqu H2
;M566 E300 ; Orbiter 2.0
M566 E300 ; Smorb
; Leadscrew locations
M671 X-10:-10:333 Y22.5:277.5:150 S7.5
; End Stops
M574 X1 S1 P"io0.in" ; Map the X endstop to io1.in
;M574 Y1 S1 P"io3.in" ; Map the Y endstop to io2.in
M574 Y1 S1 P"124.io2.in" ; Map the Y endstop to toolboard io1.in
; BLTouch
;M558 P9 C"io7.in" H5 R1 F120 T6000 A5 S0.02 B1 ; Define the bltouch input on io7.in
;M950 S0 C"io7.out" ; Define the bltouch servo on io7.out
;G31 X0 Y25 Z2.00 P25 ; Set the offsets for the bltouch Flex3Drive
;G31 X-25 Y0 Z1.814 P25 ; Set the offsets for the bltouch Biqu H2
;G31 K0 P25 X0.0 Y20.0 Z2.924 ; Set the offsets for the bltouch Orbiter 2.0
; Euclid Probe
M574 Z1 S2 ; configure Z-probe endstop for low end on Z
M558 K0 P8 C"124.io0.in" H8 F300 T9000 A3 S0.01 ; Define Euclid input
G31 K0 P500 X25.0 Y0.0 Z1.63 ; Set offset for Smorb V3 Euclid
; Thermistors
M308 S0 P"temp0" Y"thermistor" A"Keenovo" T100000 B4240 H0 L0 ; Bed thermistor - connected to temp0
;M308 S1 P"temp1" Y"thermistor" A"Mosquito" T4606017 B5848 C5.548428e-8 H0 L0 ; Dyze 500c thermistor - connected to e0_heat
;M308 S1 P"temp1" Y"thermistor" A"BiquH2" T100000 B3950 C0 H0 L0 ; Biqu H2 Chinesium HT-NTC100K thermistor - connected to e0_heat
M308 S1 P"124.temp0" Y"thermistor" A"Smorb" T100000 B4138 C0 H0 L0 ; Smorb ATC Semitec 104NT-4-R025H42G
; M308 S3 P"124.io1.in" Y"thermistor" A"Extruder Temp" T100000 B4092 ; Smorb extruder temp (not supported)
; Define Heaters
M950 H0 C"out0" T0 ; Bed heater is on out0
;M950 H1 C"out1" T1 Q10 ; Hotend heater is on out1
M950 H1 C"124.out0" T1 Q250 ; Hotend heater is on toolboard out0
; Heater model parameters
M307 H0 A158.5 C366.7 D2.1 S1.0 V24.0 B0 ; Keenovo duet 3 configuration
;M307 H1 R3.573 C131.3:99.7 D5.74 S1.00 V29.4 ; Mosquito 205deg 29.4V
;M307 H1 R3.368 K0.543:0.000 D7.05 E1.35 S1.00 B0 V29.3 ; Mosquito new model 215c 29.3V
;M307 H1 R4.724 C172.5:109.0 D7.70 S1.00 V29.4 ; Biqu H2 205deg 29.4V
M307 H1 R5.101 K0.652:0.000 D5.68 E1.35 S1.00 B0 V29.3 ; Smorb temp 215c 29.3V
; Heater Fault Parameters
M570 H1 P10 T15 S180 ; Hotend allows 10sec for anomaly, permits 15deg excursion, abandons print after 180s
M143 H1 P1 S350 A0 ; raise a heater fault if it exceeds 350C
; Define Bed
M140 H0
M557 X5:275 Y25:310 P10:10 ; Sets mesh leveling probing area /!\ Accounts for probe offset
; Fans
;M950 F0 C"out5" Q250 ; Hotend fan on "out5" connector
;M106 P0 C"Hotend Fan" H1 X0.8 T75 B0.3 ; Enable thermostatic mode for hotend fan - 0.8 to compensate for 29.4V
;M950 F1 C"out4" Q250 ; Layer fan on "out4" connector
;M106 P1 C"Layer Fan" X0.8 S0 ; Layer Fan
M950 F0 C"124.out1" Q500 ; Hotend fan on "out5" connector
M106 P0 C"Hotend Fan" H1 T75 X0.8 ; Enable thermostatic mode for hotend fan - 0.8 to compensate for 29.4V
M950 F1 C"124.out2" Q500 ; Layer fan on "out4" connector
M106 P1 C"Layer Fan" H-1 S0 X0.8 ; Layer Fan
; Tool definitions
M563 P0 S"Smorb v3" D0 H1 F1 ; Define tool 0
G10 P0 S0 R0 ; Set tool 0 operating and standby temperatures
; Duet3 Cooling
M308 S2 Y"drivers" A"DRIVERS" ; Configure sensor 2 as temperature warning and overheat flags on the TMC2660 on Duet
M308 S3 Y"mcu-temp" A"MCU" ; Configure sensor 3 as thermistor on pin e1temp for left stepper
M950 F2 C"out6" Q250 ; Create fan 2 on pin fan2 and set its frequency
;M106 P2 C"ElectroBox" H1 S0.8 T75 ; Set fan 2 value
M106 P2 C"ElectroBox" H1 X0.7 T30:75 ; Set fan 2 value
M308 S4 P"124.temp1" Y"thermistor" A"Chamber Temp" T100000 B4092 ; Toolboard temp
; LED
M950 F3 C"out8" Q1000
M106 P3 C"Enclosure Light" X0.6 S0
M950 C"124.rgbled" E0 T1
M950 F5 C"124.io0.out" Q1000
M106 P5 C"Hotend Light" X0.6 S0
; Filament Sensor
;M591 D0 P7 C"io6.in" S0 E51 L2.1 R85:115 ; Fractal Encoder filament sensor
; Mesh Bed Compensation
;G29 S1 ; Load height map from SD card - Disabled in config.g, moved after startup routing probing
M376 H3 ; Set taper height 3mm
; External Triggers
M950 J1 C"io1.in" ; Green Button on io1
M950 J2 C"io4.in" ; Red Button on io4
M950 J3 C"io2.in" ; Black Button on io2
M950 J4 C"io5.in" ; Blue Button on io5
M581 T2 P1 S1 R2 ; Green button trigger 2 only when not printing (Load filament)
M581 T3 P1 S1 R1 ; Green button trigger 3 only when printing (Raise Z)
M581 T4 P2 S1 R2 ; Red button trigger 4 only when not printing (Unload filament)
M581 T5 P2 S1 R1 ; Red button trigger 5 only when printing (Stop)
M581 T6 P3 S1 R2 ; Black button trigger 6 only when not printing (Resume)
M581 T7 P3 S1 R1 ; Black button trigger 7 only when printing (Lower Z)
M581 T8 P4 S1 R2 ; Blue button trigger 8 only when not printing (LED strip on/off)
M581 T9 P4 S1 R1 ; Blue button trigger 9 only when printing (LED strip on/off)
; Accelerometer
;M955 P0 I21 C"spi.cs3+spi.cs2" ; LIS3DH removable on Orbiter 2
M955 P124.0 I10 ; Onboard toolboard
;M593 P"mzv" F42
; Dynamic Acceleration Adjustment (DAA)
;M593 F52
; Logging
M929 P"eventlog.txt" S1 ; start logging to file eventlog.txt
T0 ; Select first hot end
; Global Variables
global hotend_timer_started = false
global hotend_timer = 0
Cheers
@oliof stepper is rated 1A, I normally run it at .85 but since less current didn't improve the issue, I tried more.
Extruder is recommended to run at 1.2A in the instructions (runs hotter but more torque)
TMC2209 Driver is rated 2A.
Speaking of, I did manage to get one print of it at 1A,
But on the 2nd one I got this message
I checked the driver and ye I got a dead short between B phase and GND...
Will pull the board out and investigate further
@fractalengineer weird; somehow increasing the current to 1A resolved it?
@jay_s_uk It's working now on io2 without pullup; I'll leave it there for the time while I move on with the rest of the setup.
thermistor doesn't work on io1; it can't do digital read
I have another issue now while trying to drive my extruder (a LDO Orbiter with a modest LDO36STH20-1004AHG, driven at 0.85A)
I'm getting a series of over temp warnings, as the driver seem to get in a drive/reset loop for the duration of the move.
Measuring the board with my IR cam reveals 60 to 70c tops package temp on the TMC.
Any tips?
@jay_s_uk much appreciated; I've just swapped it over to io2 instead and it appears to be working; I wanted to use it for a thermistor or a filament sensor, I'll see if that works on io1
@jay_s_uk dang thank you for the quick response!
funny, I did have it installed, but because I read too quick and thought it was about the Z probe
well that doesn't help then 
I've just tried without it as well and it doesn't do it either.
I had initially connected the other side high to 5V by mistake; surely that didn't fry the gpio right?
I just plopped mine on top of the Y carriage of my Railcore lol
Facing a couple issues with the RRF setup;
Somehow it's not triggering my Y endstop;
M574 Y1 S1 P"124.io1.in"And still the endstop doesn't seem to trigger on RRF
Any tips?
@o_lampe holy I might have to look into it then thanks for the heads up!
@jay_s_uk Thank you very much, that does it for me!
@o_lampe Oh no the X/Y I'm running on TMC5160 from my Duet3MB6HC; I've found 65% of the rated 2.4A to be a good balance for my drivetrain.
Ideally I would have loved to try a board with a separate driver power rail to send them 48V but that would mean switching over to klipper
I have a whole couple threads on the forum if you want to learn more about running/tuning for big steppers
https://forum.duet3d.com/topic/18010/duet-3-stealthchop-2-tuning-for-nema23
https://forum.duet3d.com/topic/16297/help-needed-with-duet-3-6hc-tmc5160-stealthchop-config