The printer has taken a backseat to so much else in life, but I may have a chance to get this thing going sometime soon.

Almost 2yrs ago now, the extruder began to fail, so I decided a custom head full of upgrades was appropriate, but it has taken me a long time to get it put together. I got the head assembled with the essentials and fired up the board and now the board "always on" fan also doesn't come on. If I did in fact kill the "fan header" as @Veti spoke about, can this be repaired? diagnosed with certainty?

Thanks for any help,
Matt

Thanks @Veti. It's possible that i killed the header when hooking up the fans, and given what @jens55 said, I may have killed them both?

Is there a way to diagnose this? When i said that I put 24V to the fans each way, that was me trying them with a benchtop power supply.

Thanks again guys,
Matt

Re: Fan Voltage

Sorry for the uber noob question: is there a special way to test fans? I've installed my DuetWifi on a Wanhao D6, which I believe had working heat break and part cooling fans when the original motherboard was connected. I don't have any recollection of the fans working since installing the Duet.

I tried taking them out to test them on the bench. After confirming that the stock fans are 24V (the Duet was configured accordingly), I applied 24V to the fans, wired each way, and nothing. Have I subjected my fans to a common cause of death?

Thanks for any help!
Matt

@deckingman Thanks for this great help. I got it up and running and all seems to be working fine with the exception of something strange. When I increase the slider for extruder 1 (the new pusher) it seems to slow down. Inversely, when i drag it below the setting for Extruder 0, it speeds up. Is there a good explanation for this?

Thanks again,
Matt

@deckingman

Here is my config.g after making these edits you've suggested. I need to calibrate for the differences in the stepper and gear wheel of the new push extruder (not sure yet how to do that), but i just duplicated the E0 values to start. I did not have an M584 before, so I added it also. Anything look bad?

Also, this may or may not make any difference, but i have not got my M911 Automatic power loss state saving working yet, and neither of my tool-end fans work (hot-end nor part-cooling, lesser problems to solve later).

Thanks again for all the help!
Matt

; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2 on Sun Jul 21 2019 14:27:44 GMT-0700 (Pacific Daylight Time)

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

; Network
M550 P"Stevens3D1" ; Set machine name
M552 S1 ; Enable network
;*** Access point is configured manually via M587
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Drives
M584 E0:1 ;duplicates extruder drive
M569 P0 S0 ; Physical drive 0 goes reverse
M569 P1 S0 ; Physical drive 1 goes reverse
M569 P2 S1 ; Physical drive 2 goes forwards
M569 P3 S1 ; Physical drive 3 goes forwards
M350 X16 Y16 Z16 E16:16 I1 ; Configure microstepping with interpolation
M92 X80.40 Y80.40 Z800.00 E94.75:94.75 ; Set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00:120.00 ; Set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00:1200.00 ; Set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00:250.00 ; Set accelerations (mm/s^2)
M906 X1000.00 Y1000.00 Z1000.00 E1000.00:1000.00 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 X200 Y200 Z175 S0 ; Set axis maxima

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

; Filament Runout
M591 D0 P1 C3 S1

; Z-Probe
M558 P0 H5 F120 T6000 ; Disable Z probe but set dive height, probe speed and travel speed
M557 X15:195 Y15:195 S40 ; Define mesh grid

; Heaters
M307 H0 B0 S1.00 ; Disable bang-bang mode for the bed heater and set PWM limit
M305 P0 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S120 ; Set temperature limit for heater 0 to 120C
M305 P1 X200 ; Configure PT100 for heater 1
M143 H1 S260 ; Set temperature limit for heater 1 to 260C

; Fans
M106 P0 S0 I0 F500 H1 T45 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P2 S1 I0 F500 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P0 D0:1 H1 ; Define tool 0 to use both extruders 0 and 1, and heater1
M567 P0 E1.00:1.00 ; set mixing ratio for tool 0 so that both extruders feed 100%
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 S22 R50 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

Thanks for the great help guys. I have yet to implement this, but thinking ahead, how might I implement stall detection on the new pusher stepper? the idea being that if the roll is cross wound or twisted or something, the print could pause until it could be manually cleared. This has happened to me a number of times and part of why I want to implement the push-pull.

Thanks Ian. I will give this a try! I take it this gcode is to be implemented in the config.g file, or is it better suited to a macro on startup (which I have never done before). I'm a noob.

Thanks again!
Matt

Hey guys,

I would like to use the second extruder stepper driver to send a duplicate signal from the first extruder to an additional one to reduce the tension/influence on my x&y drives (it's a direct drive extruder). So this would be like a combo bowden-dd setup. Can this be done with a Deut2 Wifi?

Thanks!
Matt

Thanks! I'll look into this.

Hey guys,

I have 24V fans and 24V input voltage in my Wanhao D6. Neither my hotend fan or part cooling fan have worked since I installed my DuetWifi; I am questioning the input voltage. I have read that the Duet can be toggled to send 5V or Vin to the fans, but I have not found that setting in the config.g file. How do I set that?

Thanks,
Matt