Hotend cooling fan not turning on when heating extruder
Hello,
I have a problem with the fan of my hot end (not the fan for filament cooling). Although the firmware is configured correctly in my opinion, the fan does not start when the fan heats up, but remains off.
The fan runs with 12V on my RUMBA board at fan pin 2 (there are only 2 fan pins). If you enter "M106 P1 S255", the fan starts without any problems.
Comments
Yes, I confused the second cooling fan with the extruder cooling fan. Maybe you want to rename the entries in the FW configurator? I think it's a bit misleading.
Maybe you want to rename
to
Fan pin for first print cooling fan
Fan pin for second print cooling fan
or so?
Cooler PWM speed / EXT0_EXTRUDER_COOLER_SPEED is the setting for controlling the speed of the extruder cooler, isn't it? My problem is the fan runs with max speed though I set the PWM to 128 (half speed).
I use the Aduino Mega 2560 with the Ramps 1.4. in my 3D-printer.
How can I define this Extruder 0 cooling Fan in the config tool?
What is the pinnumber for the 12V Aux connector?
The picture show the testboard with stepper and fan.
In Repetier-Firmware Configuration tool I set Extruder cooler pin to Fan2 pin but it give an error message
#define EXT0_EXTRUDER_COOLER_PIN ORIG_FAN2_PIN
Error message: 'DIOORIG_FAN2_PIN_DDR' was not declared in this scope
Thank you.