13 hours ago, GregValiant said:You've likely got something wired wrong. The M106 should only effect the layer cooling fan.There is no gcode command for control of the hot end fan. In some firmware, the hot end fan can be regulated by the temperature setting (it sounds like you have that enabled at 60°) so the fan doesn't run all the time.
Thanks, didn't realize the P0 and P1 were not supposed to be referring to heatsink fan and 1st part cooling fan, respectively.
Investigated further, and solved it by changing
pins_BTT_SKR_common.h
//
// Heaters / Fans
//
#ifndef HEATER_0_PIN
#define HEATER_0_PIN P2_07
#endif
#ifndef FAN_PIN
#define FAN_PIN P2_04
#endif
//#else
// #ifndef HEATER_1_PIN
// #define HEATER_1_PIN P2_04
// #endif
//#endif
#ifndef E0_AUTO_FAN_PIN
#define E0_AUTO_FAN_PIN P2_03
#endif
#ifndef HEATER_BED_PIN
#define HEATER_BED_PIN P2_05
#endif
and Configuration_adv.h line 610
define E0_AUTO_FAN_PIN P2_03
-
1
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GregValiant 1,251
#ifndef HEATER_0_PIN #define HEATER_0_PIN P2_07 This looks like power for Heater0 #endif #ifndef FAN1_PIN #define FAN1_PIN P2_04 This looks like a second fan but I don't see a connect point on the SKR. #endif //#else // #ifndef HEATER_1_PIN // #define HEATER_1_PIN P2_04 Undefined power for a second extruder (heater1) // #endif //#endif #ifndef FAN_PIN #define FAN_PIN P2_03 this one looks like the layer cooling fan F0? #endifYou've likely got something wired wrong. The M106 should only effect the layer cooling fan.
There is no gcode command for control of the hot end fan. In some firmware, the hot end fan can be regulated by the temperature setting (it sounds like you have that enabled at 60°) so the fan doesn't run all the time.
In Cura Manage Printers / Machine Settings / Extruder 1 the "Cooling Fan Number" should be set to "0". There is often some confusion about this but your hot end on a single extruder machine is called Extruder #1 but its number is Extruder0 and it is related to T0 in gcode and it's fan should be number "0".
You can just post the gcode file. There is no reason to do all of that copy and paste work and things are way easier to search for in a text editor than on a webpage.
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