Config for LED on Heater & Temp Controlled Fan

fotomas

I need help to get the configuration right for controlling some lights attached on heater E1.

Board: Duet WiFi 1.02
Firmware: 2.05.1

I have a thermistor just above the heat break that controls the hot end cooling fan. I have this working well and displayed in DWC.

What I would like to accomplish is to with a macro toggle lights on heater port E1 and keep the function of the hot end cooling. Also keep the heat break temp in the diagram.

Preferably hide the extra tool and having the fan slider visualizing the fan speed. As of now there is a fan slider but it seems to have no connection to a fan.

Removing the M563 P1 for tool T1 hides the tool in DWC but stops the fan. So there some more configuration needed, please help.

Complete config.g

; --- Heaters
;Bed
M305 P0 S"Bed" T100000 B4138 R4700             ; set thermistor + ADC parameters for heater 0
M143 H0 S90                             ; set temperature limit for heater 0 to 90C

;Hotend
M305 P1 S"Hotend" R4700  T100000 B4725 C7.06e-8 ; Extruder
M143 H1 S280                            ; set temperature limit for heater 1 to 280C

;Heatbreak
M305 P2 S"Heatbreak" X2 R4700
M143 H2 S90 

; Fans
M106 P0 S0 I0 F70 H-1             
M106 P1 B0.2 T35:50 H2 X200 S255

; Tools
M563 P0 S"Hotend" D0 H1 F0                         ; define tool 0
M563 P1 S"Heatbreak" H2

Phaedrux

I think this would be easier to do in RRF3 where you have more flexibility over how pins are used.

I'm also a little confused in your description about how the heat break fan is being used. Why is there a separate thermistor? Couldn't use just monitor the hotend temps as usual?

You speak of lights and a fan, lights are on e1heat but where is the fan connected? Fan1?

fotomas

Sorry for the incomplete description.

I have jammed a thermistor inside the cooling fins of a hemera extruder (the cooling fins where the heatbreak i threaded). I did this to have a temperature controlled cooling fan that reacts to the actual temperature. The actual need for this is questionable at best, and when I mounted a Noctua fan full speed makes almost no noise at all.

I anyone is interested a Hemera with a noctua 40x40x10 12v fan at full speed keeps the heatbreak at about 55 C when printing at 250 C.

So if a would skip thermocontrol of the extruder fan (or wait until upgraded to RRF3 ) :

What do I need to do just to control the Heater E1 as power on/off (without complaints about temperatures)?

Phaedrux

It's been a while since I've had my brain in RRF2 mode but I think you should be able to unbind the heater using M307 H# A-1 C-1 D-1 and then use M42 to switch it as a on/off pin to control the lights.

https://duet3d.dozuki.com/Wiki/Gcode?revisionid=HEAD#Section_M42_Switch_I_O_pin

fotomas

@Phaedrux got it working, took a while until I figured out that config-override.g was the problemi

Phaedrux

Ah yes, of course. That's was a common problem with the BLTouch which needs a heater pin unbound as well.