Filter fan control
Is it possible to tune RatOS filter fan control to enable the filter fan only if certain temperature sensor (chamber temp ideally) is above certain value (say above 32 degrees) which will suggest printer is heating up enclosed. The functionality behind this is to not engage the filter fan at all if printer is printing open (no need to waste the filter or add extra noise to the surrounding environment)
6 Replies
add your debug.zip please
Don't have the answer, but this is clever logic - following!
you will probably have to convert your config to use https://www.klipper3d.org/Config_Reference.html#temperature_fan
This is actually how I have set the chamber filter fan on my old v-core3 3 years ago (old RatOS there), but I like how RatOS 2.1 has provisioning to run the fan at certain fixed speed during print and then blast the fan at full speed for xxx seconds after print is done to more effectively clean the chamber just before it is to be opened. Filter fan speed logic should not be dependent on the temperature for the chamber - fixed speeds make more sense for it.
I am guessing the Macro Hooks (https://os.ratrig.com/docs/configuration/chamber_filter/) are the way to do it, just I am not sure how exactly to do it without breaking RatOS installation.
Chamber Filter Control | RatOS
RatOS includes built-in chamber filter control functionality.
Hmm, is this already implemented?? I honestly haven't tried, just asked the question based on docs around chamber filter fan configuration. I was reading trough START_PRINT macro and it seems have a check to only engage chamber filter fan if there is a temperature set for chamber for the print. I guess I better try printing something 🙂
variable_chamber_filter_disable_speed: seems not being honored.
When printing with chamber control disabled, it still gets filter enabled. So it indeed needs tweaking
what I saw is likely the implementation to use the filter fan as part of air circulation during chamber heating
I hacked my way into this by overriding couple of macros, not perfect but works the way I think closed air filtration chamber system should work. I would still suggest consider providing more elaborate filter support in RatOS in the future.