Why so many filament sensor configurations?
So I upgraded from a MK2.5 to a MK2.5S, and I realized that a MK2.5S has not one but TWO filament sensor configurations. The MK2.5 filament sensor wasn't perfect, but it worked most of the time.
On the Mk2.5S one filament sensor contains this moving arm containing a ball bearing and two magnets. The other configuration is this "chimney" higher than where the filament enters, and it uses an arm attached to the extruder gear door to tell when the filament is loaded. Unless the filament is loaded, it won't turn on, so you can't use it to autoload filament, only to report IF the filament is actually loaded.
When I was building this thing, the chimney sensor wasn't working, so I checked the steps and realized I forgot the ball bearing arm. But it turns out, that is just yet another configuration. So why so many filament sensor configurations? Its pretty irritating.
Re: Why so many filament sensor configurations?
One is for when you have an MMU2, the other is standard (no MMU = ball and magnets)).
Re: Why so many filament sensor configurations?
Yeah, it wasn't smart for Prusa to name them both the same. I guess I have a MK2.5SGU
That is a printer put together as a MK2, then upgraded to a MK2S then upgraded to an MK2.5 so I could use an MMU1 but that never worked so bought the MMU2 upgrade that required an MK2.5 upgrade to a MK2.5S only to give up on the MMU2. MK2.5SGU (GU stands for gave up.)