Fan Controll Issue

PeterA

@Veti
Not sure, is the F) meant to read F1?
Im no programmer.

Veti

you said its connected to pin 1 but you configured pin0 "fan0" is the pin on the board

PeterA

@Veti said in Fan Controll Issue:

Parts Fan

Ok so should it read

M950 F1 C'fan1" Q500
and then
M950 F1 C"fan1" Q500

or do i just put that in once?

Veti

@PeterA said in Fan Controll Issue:

if you connect the second fan to always on you can not control it.

therefore the config to control the fan is not required

delete

M950 F1 C"Parts Fan" Q500 ; create fan on pin1 and set its frequency
M106 P1 S1 L41 X255 B1 H1 T45 ; set fan 1 name and value. Thermostatic control is turned on

Veti

and dont change the f parameter

PeterA

Thank ok ill delete it. then do i change the other code to
M950 F1 C"fan1" Q500

Its not my field o expertise?

Veti

again dont change the f parameter

PeterA

sorry didnt see that

Veti

if you change the config. its a good idea to read the documentation what the parameters do.
e.g
https://duet3d.dozuki.com/Wiki/Gcode#Section_M950_Create_heater_fan_or_GPIO_servo_pin

PeterA

Ok I'm trying this, hope I understood correctly, I've been through that document but I'm not getting it I guess. Its not through lack of trying

; ##### Fans #####
; =================

M950 F0 C"fan1" Q500 ; create fan 0 and fan1 on pin0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 name and value. Thermostatic control is turned off
;M950 F1 C"Parts Fan" Q500 ; create fan on pin1 and set its frequency
;M106 P1 S1 L41 X255 B1 H1 T45 ; set fan 1 name and value. Thermostatic control is turned on

PeterA

It's not working. Or did I misunderstand and I cant control them??

PeterA

The tool fan or hot end fan is always on and i don't want to control that, the parts cooling fan is connected to the pin in the diagram that i circled, and that's the one i want to control. I can not get them to come on at all anymore.

Veti

@PeterA said in Fan Controll Issue:

The tool fan or hot end fan is always on and i don't want to control that, the parts cooling fan is connected to the pin in the diagram that i circled, and that's the one i want to control. I can not get them to come on at all anymore.

check that the fan is working by connecting it to the always on fan.

however, if you for example swapped the polarity by mistake and connect the fan, you can blow the mosfet. then the port will either stay on or off, depending on how the mosfet failed.

PeterA

Thanks, I didn't change the connections and it was working, I'm not sure. The first pin Pin0 failed a while back so if you say the config is ok then I guess i have a failed mosfet. Not sure if that's changeable, I've changed a few on my Arduino board.

Veti

issue
M106 P0 S1

see if the fan turns on.

if not. try fan2 port

Veti

and just to be sure. you restarted the duet after you made those changes?

PeterA

Thanks ill go try, the software rebooted the duet, ill try turn in off and on physically now

Veti

@PeterA said in Fan Controll Issue:

M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin
M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e0temp

also B4138 is incorrect. find the correct beta value in your thermistor documentation.

PeterA

@Veti
OK, i don't have any issues with the hot end or bed heating up and maintaining temp, not sure i understand the connection with the fans?

Veti

@PeterA

its not connected. but an incorrect value with result in an incorrect temperature being displayed.

it could show 200 but the actual temperature could easily be 180