I have had intermittent wifi issues since install. It would constantly disconnect. After reading a seggestion in forums I realized I had created a "faraday cage" between my duet board and modem. A cheap wall plug wifi booster, closer and without metal obstructions between modem and booster, fixed the problem.
Hi all. I have a very large ( 1000 x 1300 x 1800 ) DIY cartesian printer ( moving 2x and 1y on 3z gantry with stationary bed ) driven by a Duet wifi and duex 5 that is in more or less in working order but I don't have the skills to take it to the finishing line. I am afraid that if I continue to tinker with the firmware I am going to screw it up for good.
Anyone interested in putting all that hard fought knowledge to use? Please respond.
@damaged_goods Could someone explain what and why it is "bizarre" to alter steps per mm in homing file. I have no reasoning and am never offended to learn something new 
Re: Nozzle will not start low enough to print
Phaedrux MODERATOR 31 Jul 2020, 21:54
@damaged_goods said in Nozzle will not start low enough to print:
M92 X172.00 ; set movement speed to match m915 H param
M201 X100.00 ; reduce acceleration
M566 X100.00 ; reduce maximum instantaneous speed changes (mm/min)
G1 H1 X-1160 F6000 ; move quickly to X axis endstop and stop there (first pass)
; G1 H2 Z-5 F6000 ; lower Z again
G90 ; absolute positioning
M92 X80.00 ; set steps per mm back to default
M566 X900.00 ; set maximum instantaneous speed changes back to normal (mm/min)
M201 X500.00 ; set ac
It's quite bizarre to alter your steps per mm in a homing file. What is the reasoning?
I have had intermittent wifi issues since install. It would constantly disconnect. After reading a seggestion in forums I realized I had created a "faraday cage" between my duet board and modem. A cheap wall plug wifi booster, closer and without metal obstructions between modem and booster, fixed the problem.
@Phaedrux thank you. This should be very helpful.
/31/2020, 7:27:23 PM M115
FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 3.0 ELECTRONICS: Duet WiFi 1.02 or later FIRMWARE_DATE: 2020-01-03b3
NPN inductive Z probe
; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Thu May 07 2020 15:49:06 GMT-0400 (Eastern Daylight Time)
; homex.g
; called to home the X axis
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Thu May 07 2020 15:49:06 GMT-0400 (Eastern Daylight Time)
G91 ; relative positioning
; G1 H2 Z20 F120 ; lift Z relative to current position
M92 X172.00 ; set movement speed to match m915 H param
M201 X100.00 ; reduce acceleration
M566 X100.00 ; reduce maximum instantaneous speed changes (mm/min)
G1 H1 X-1160 F6000 ; move quickly to X axis endstop and stop there (first pass)
; G1 H2 Z-5 F6000 ; lower Z again
G90 ; absolute positioning
M92 X80.00 ; set steps per mm back to default
M566 X900.00 ; set maximum instantaneous speed changes back to normal (mm/min)
M201 X500.00 ; set ac
; homey
G91 ; relative positioning
; G1 H2 Z5 F6000 ; lift Z relative to current position
M92 Y172.00 ; set movement speed to match m915 H param
M201 Y100.00 ; reduce acceleration
M566 Y100.00 ; reduce maximum instantaneous speed changes (mm/min)
G1 H1 Y-1430 F6000 ; move quickly to Y axis endstop and stop there (first pass)
;G1 H2 Z-5:-5 F6000 ; lower Z again
G90 ; absolute positioning
M92 Y80.00 ; set steps per mm back to default
M566 Y900.00 ; set maximum instantaneous speed changes back to normal (mm/min)
M201 Y500.00 ; set accelerations back to normal (mm/s^2)
G91 ; relative positioning
G90 ; absolute positioning
; G1 X5 Y-10 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 Z5 F120 ; lift Z relative to current position
;G90 ; absolute positioning
The last question, I don't have an answer to. I used my Prusa Slicer but I didn't see a setting for a start code. I suspect it my ignorance of the software is at least one of my issues. Thank you for any help you can give. I am new to DIY printers.
Thank you. I will give that a try.
Hi all
Below is my present config file. After I zero my nozzle and attempt to print, the nozzle will not go low enough to give me a good first layer. It seems to start printing at about 2.2 mm above the bed.
Please help!
I am soooo close
; Configuration file for Duet WiFi (firmware version 2.03)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Thu May 07 2020 15:49:06 GMT-0400 (Eastern Daylight Time)
; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"My Printer" ; set printer name
; Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet
; Drives
M569 P2 S0 ; physical drive 2 goes backwards
M569 P1 S0 ; physical drive 1 goes backwards
M569 P0 S1 ; physical drive 0 goes forwards
M569 P4 S1 ; physical drive 4 goes forwards
M569 P3 S1 ; physical drive 3 goes forwards
M584 X2 Y1 Z0:4 E3 ; set drive mapping
M350 X16 Y16 Z16:16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z1800.00 E420.00 ; set steps per mm
M566 X900.00 Y900.00 Z0.2 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z120.00 E1200.00 ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2)
M906 X1200 Y1400 Z2400 E800 I30 ; 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 X1160 Y1430 Z1815 S0 ; set axis maxima
; Endstops
M574 X1 S3 ; set endstops controlled by motor stall detection
M574 Y1 S3 ; set endstops controlled by motor stall detection
M574 Z0 P"nil" ; set endstops controlled by probe
; Z-Probe
M558 P5 C"!zprobe.in" H6 F120 T500 ; set Z probe type to switch and the dive height + speeds
G31 P500 X-30 Y-36 Z0.66 ; set Z probe trigger value, offset and trigger height
M557 X0:1160 Y0:1430 S200 ; define mesh grid
; Heaters
M140 H0 ; enable heated bed; map heated bed to heater 0
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit
M143 H0 S120 ; set temperature limit for heater 0 to 120C
; M305 P1 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 1
M308 S0 P"bed_temp" Y"thermistor" T100000 B3950
M308 S1 P"e0_temp" Y"thermistor" T100000 B4138
; M950 H0 C"bed_heat" T0
M950 H1 C"e0_heat" T1
M143 H1 S280 ; set temperature limit for heater 1 to 280C
; Fans
M950 F0 C"!Fan0"
M106 P0 S0.5 H1 T45 ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
; Tools
M563 P0 D0 H1 F0 ; 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
; Custom settings
; X axis sensorless endstop config
M915 X S5 F0 H172 R0
; Y axis sensorless endstop config
M915 Y S8 F0 H172 R0
M501
Great suggestions! I will rewire the x's separately and watch the clones cooling. The z screws are finely threaded rod so falling should be easy to prevent.