Fan, thermistor & heater configuration

Lakko

Hi,
I've some doubt for the firmware configuration..
i have n.2 12v fan and i want to run them always on…i have to use or remove the jumpers?

I have buyed this heater:
https://reprapworld.com/products/extruder/temperature_control/ceramic_heater_cartridge_12v_40w/
on the site they write:
"Start with these PID settings in Marlin:
#define DEFAULT_Kp 45.0
#define DEFAULT_Ki 4.2
#define DEFAULT_Kd 120"
how i set kp ki & kd on duet?
I have a 100k thermistor, what is the set up?

Thank you in advance

deckingman

Check the Wiki, the answers are all there.

e.g
https://www.duet3d.com/wiki/Connecting_and_configuring_fans

and
https://www.duet3d.com/wiki/Tuning_the_heater_temperature_control

Lakko

@deckingman:

Check the Wiki, the answers are all there.

e.g
https://www.duet3d.com/wiki/Connecting_and_configuring_fans

and
https://www.duet3d.com/wiki/Tuning_the_heater_temperature_control

i found answer for the Kp Ki & Kd question in the G-code page
https://www.duet3d.com/wiki/G-code#M301:_Set_PID_parameters
so for Kp45.0, Ki4.2 Kd120 i set:
M301 H1 P54 I4.2 D120

for the chinese thermistor:
M305 P1 S"Estrusore1" R4700 T100000 B3950

For the fan question i still not understand yet if the V_FAN, INT 5V EN & EXT 5V EN jumpers are required for allways-on fan if they are powered from the main 12V or from the Duet's 5V.
I have 12V fan so i think the 2 jumpers EXT 5V and INT 5V are not required but i don't konw for V_FAN jumper.
from the wiki i read "A jumper (V_FAN) allows you to select whether all fans are powered from the main (12/24V) supply or from the Duet's 5V supply."
but i can't find anything in the wiki or in the forum like for example "V_FAN jumper is present = 12/24V; V_FAN jumper is NOT present = 5V".

number40fan

I am sure that all of the Duets come ready to run the fans off of VIN. At least I didn't have to change anything to run 12 volt fans.

Dougal1957

think the Internal 5V EN jumper will be needed not for the fans as such but to drive the duet itself if you don't have a USB Plugged in

DjDemonD

Vfan jumper has 3 pins. One is always +5v from the 5v regulator on the duet (or possibly external 5v if you have that jumper set). One is Vin from your psu so 12 or 24v usually. The jumper connects the fan positive bus which runs to all the fan headers both pwm and always-on, to either 5v or Vin depending on the jumper connection.

So chose one.

However you can be clever with it. I have some 5v fans and some 24v fans. The 5v fans positive comes off the +5v pin of the vfan header and are grounded via the fan header GND of your choice. The pwm is achieved through the gnd. The rest of my fans plug into the fan headers directly and my vfan jumper is set to Vin (I have a 24v psu).

You can also have 12v fans on a 24v system by connecting 12v to the central pin of vfan header.