Is there a way to switch a pin depending on wether the printer is

Controllers Smoothie
,
1

Is there a way to switch a pin depending on wether the printer is active or not? I want a pin to toggle if a motor is active or a heater is on. I want to use it for cooling my general electronics and I want to have less noise when idle…

2

This is how I do it… create custom MCODES and configure the slicer to call them as needed.

hot end cooling fan

switch.misc.enable true
switch.misc.input_on_command M42
switch.misc.input_off_command M43
switch.misc.output_pin 2.4
switch.misc.output_type digital

chassis fan

switch.cool.enable true
switch.cool.input_on_command M44
switch.cool.input_off_command M45
switch.cool.output_pin 1.22
switch.cool.output_type pwm
switch.fan.max_pwm 255
switch.fan.startup_value 210

3

Yeah, but this is only while printing. I need one for moving manually axis around or putting a heater on manually.

4

Temperature control will let you automatically turn on a fan whenever a thermistor is above a set temp. It’s easy to set up.

I don’t know about the other one. Are you experiencing problems with the electronics? I don’t think smoothieboard requires special or Herculean cooling. I’ve run passive even when experimenting with high current motors.

5

I did build a VERY compact and enclosed printer and therefore I need a coolingfan for the complete electronic-compartment (it’s all in there, even the PSU). While leaving a small fan always on is no problem, it would be even better, if it is only on by demand.

6

I couldn’t find anything. maybe use a switch module that reads an axis step pin. I don’t know if smoothieware allows that without jumpering to another input pin.