How do I configure my default fan?

droftarts

@maroonds First, test the fans on an 'always on' fan pin header, to check they are working.

H0 is 'HEATED BED', H1 is 'E0 HEATER' and H2 is the 'E1 HEATER'. So connect your fan (checking polarity) to the E1 HEATER screw terminals, or the pins behind it (+ve is on the left, GND on the right):

To test the fan, use the gcode @dc42 suggests, but change the M106 line to:
M106 P3 A2 H-1 S1
This should turn the fan on at 100%, ignoring the heater, and should show up in DWC to control it.

For the part cooling fan, do you want this to be Fan 0, but connected to Fan2? Try:
M106 P0 A22 H-1 S1
This should map fan0 to logical pin 22, which should be fan2. I think!

Ian

maroonds

@droftarts said in How do I configure my default fan?:

M106 P3 A2 H-1 S1

Thanks! My part cooling fan is now working, but my hotend cooling fan (connected to e1) is still not working...

droftarts

@maroonds Did you test the hot end fan on the 'always on' fan pins? Did a fan control show up in DWC?

Ian

maroonds

@droftarts Fan control shows up but only for my part cooling fan. The fan turns on when I connect it to the always on pin but I'd like it to only turn on when the temperature is above 45c since it's kind of loud.

droftarts

@maroonds Can you post how your fans are set up at the moment? You can also check by sending M106 P[fan number], though this doesn't tell you what pins it's using.

Ian

maroonds

@droftarts said in How do I configure my default fan?:

M106 P[fan number]

here is my fan setup

droftarts

@maroonds I meant in your config.g. Copy the text from config.g and paste it into your reply.

Ian

maroonds

@droftarts Oh my bad..
; Custom settings are not defined
; Configuration file for Duet Maestro (firmware version 2.03)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Wed Apr 22 2020 01:05:56 GMT+0200 (Mitteleuropäische Sommerzeit)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"My Printer" ; set printer name

; Network
M552 P192.168.1.69 S1 ; enable network and set IP address
M553 P255.255.255.0 ; set netmask
M554 P192.168.1.254 ; set gateway
M586 P0 S1 ; enable HTTP
M586 P1 S1 ; enable FTP
M586 P2 S0 ; disable Telnet
M552 S1 P192.168.8.101

; Drives
M569 P0 S1 V0 ; physical drive 0 goes backwards X
M569 P1 S1 V0 ; physical drive 1 goes backwards Y
M569 P2 S0 ; physical drive 2 goes forwards Z
M569 P4 S1 ; physical drive 3 goes forwards E
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E393.00 ; set steps per mm
M566 X420.00 Y420.00 Z12.00 E180.00 ; set maximum instantaneous speed changes (mm/min)
M203 X24000.00 Y24000.00 Z720.00 E7200.00 ; set maximum speeds (mm/min)
M201 X2000.00 Y2000.00 Z500.00 E5000.00 ; set accelerations (mm/s^2)
M906 X850 Y850 Z600 E950 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
M204 P1000 T2000 ; Set printing and travel accelerations

; Axis Limits
M208 X-5 Y-5 Z-5 S1 ; set axis minima
M208 X235 Y230 Z260 S0 ; set axis maxima

; Endstops
M574 X1 Y1 S1 ; set active high endstops
M574 Z1 S2 ; set endstops controlled by probe

; Z-Probe
M558 P9 H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X-33 Y1 Z2.5 ; set Z probe trigger value, offset and trigger height
M557 X10:210 Y10:210 S20 ; define mesh grid

; Heaters
M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit
M305 P0 T98801 B4185 R2200 ; set thermistor + ADC parameters for heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M305 P1 T100000 B4725 C7.060000e-8 R2200 ; set thermistor + ADC parameters for heater 1
M143 H1 S280 ; set temperature limit for heater 1 to 280C

; Fans

M106 P0 A22 H-1 S1
M106 P3 A2 H-1 S1

; 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 are not defined

; Miscellaneous
M501 ; load saved parameters from non-volatile memory
M911 S23 R23.7 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss

droftarts

@maroonds From your config.g:

; Fans
M106 P0 A22 H-1 S1
M106 P3 A2 H-1 S1

; Tools
M563 P0 D0 H1 F0 ; define tool 0

You haven't disabled Heater 1, as @dc42 suggested, with:
M307 H2 A-1 C-1 D-1 ; disable heater 2

Also, your tool is using F0, which is the part cooling fan.
For the hot end fan, you don't need to specify it in the tool, as it's going to be set to thermostatically watch Heater 1 anyway. As you don't have any other fans, you may as well call this 'Fan1' or P1. So, change your config.g to:

; Fans
M106 P0 A22 H-1 S0
M307 H2 A-1 C-1 D-1 ; disable heater 2
M106 P1 A2 H1 T45

; Tools
M563 P0 D0 H1 ; define tool 0

Fans that are linked to tools won't show up in DWC until the tool is active. Fans that are thermostatic won't show up at all. Fan visibility can be turned on and off in the 'Current Job > Status' page; click on 'change visibility' in Fans section.

Is there any reason you're not using the other PWM fan pins?

Ian

maroonds

I had to change my pwm ports because I shorted the ones I was previously using.
Btw. I tried it with your adjustments but my hotend fan is still not turning on when my heater reaches 50 degrees.

droftarts

@maroonds You made the changes to config.g, saved it, then reset the Duet? Run M98 P"config.g" and see if it generates any errors.

What happens if you send:
M307 H2 A-1 C-1 D-1
M106 P1 A2 H-1 S1

Ian

maroonds

@droftarts It doesn't create any errors and after I pasted the other commands nothing happens and the fan still doesn't turn on at 50 C

droftarts

@maroonds Can you post a picture of your board showing wiring? How are you connecting the fan to E1 HEATER, on the pins or screw terminals? Have you checked polarity?

The command from my previous post, M106 P1 A2 H-1 S1, should turn it on full speed straight away, to test. To be thermostatic controlled, needs to be M106 P1 A2 H1 T50. But it needs to be working with the first M106 command, before setting it to thermostatic control. See gcode dictionary to understand the settings: https://duet3d.dozuki.com/Wiki/Gcode#Section_M106_Fan_On

Ian

maroonds

@droftarts said in How do I configure my default fan?:

M106 P1 A2 H-1 S1

Screw terminals. I checked the voltages with a multimeter and it has around 0.5V with this command sent: M106 P1 A2 H-1 S1
And yes the polarity is right

maroonds

@droftarts This was my setup on RRF3 (now I'm on 2.05.1):
; Fans
M950 F3 C"e1heat"
M106 P3 H1 T35 S1
M950 F2 C"nil"
M950 F0 C"fan2" Q500
M106 P0 I0 C"5015" S0 H-1

droftarts

@maroonds try S255 . Any reason you rolled back from RRF3? Where the fans not working? Setting the part cooling fan with P0 and not thermostatic or bound to a tool should put it under slicer or manual control.

As this is a Maestro, I’m not sure if pin A2 is correct for Heater 1. It should be. @dc42 ?

Ian

maroonds

@droftarts I don't know what I did wrong yesterday, but now it's working.
At least this command: M106 P2 A2 H-1 s255
But how can I make it thermostatic controllable?
This is my current setup:
M106 P0 A22 H-1 S1 ; Part cooling fan
M106 P3 A2 H1 T45 ; Hotend fan
M307 H2 A-1 C-1 D-1 ; Disables H2

dc42

@maroonds said in How do I configure my default fan?:

M106 P0 A22 H-1 S1 ; Part cooling fan
M106 P3 A2 H1 T45 ; Hotend fan
M307 H2 A-1 C-1 D-1 ; Disables H2

The M307 command must come before the M106 P3 A2 command.

maroonds

Now everything is working! Thanks @droftarts @dc42