Berd air connection to heater pin

matej1006

Hello will this code work that i will be able to connect berdair pump to heater 1 pin's?
my 4 heater are all connected to duex board so i have bouth Heater on duet2wifi free

; Part cooling fan
M950 H1 C"nil" ; disable heater 1 and free up the associated pin
M950 F9 C"heater1" Q0; Fan 9 is connected to heater 1 pin, PWM at 100Hz   
M106 P9 S1

i have H1 heater sign to duex.e2heat
so i need to sign new heater and then disable pin or how i could manage that?
and what i need to do that i will see fan on dashboard?

Matej

dc42

If the Berd Air is your main print cooling fan, it's best to call it Fan 0 not Fan 9. Don't create heater 1. So I suggest you use the following:

M950 F0 C"duex.e2heat" Q100; Fan 0 is connected to duex.e2heat pin, PWM at 100Hz   
M106 P0 S1

The fan should appear on the dashboard automatically.

You should connect a flyback diode in parallel with the Berd Air motor, because the heater outputs on the Duet don't have built-in flyback diodes.

matej1006

hello @dc42 i add diode already where can i find all connector name

And which is gnd and vcc pin or how i need to connect Motor to heater pin

deckingman

@matej1006

https://duet3d.dozuki.com/Wiki/Duex_wiring_diagrams

matej1006

@deckingman Yeah i know but which of to is gnd and which vcc on output for heater 1

deckingman

@matej1006 Sorry - I though you wanted to connect to the Duex board. Duet is here

https://duet3d.dozuki.com/Wiki/Duet_Wiring_Diagrams

VCC is Vin (the one on the left in that diagram).

matej1006

@deckingman no worry