Core One Plus filament switch
Hi, beginner here, I would like to know the purpose of the sensor switch that's part of the Core One+ upgrade. Does it have 2 states or 3? When should I use each?
RE:
Hi, beginner here, I would like to know the purpose of the sensor switch that's part of the Core One+ upgrade. Does it have 2 states or 3? When should I use each?
The switch is to change the resistance of inserting normal (when closed) or soft filaments (when open or 'X') through the side filament sensor. If you don't have a need to print soft TPU or PEBA then you don't need to use the switch. In other words, switching "X" makes it easier to insert soft filaments.
TL;DR
Inside the switch is a magnet. When the switch is in the closed position (not 'X') the magnet is repelling another magnet in a lever with a steel ball underneath and is pushing it down. This lever blocks an optocoupler (LED and sensor) which signals that there is no filament in the sensor. When filament is pushed into the sensor, is pushes on the steel ball which lifts the arm up and unblocks the LED in the sensor. This registers as "filament was inserted". If the filament breaks or runs out, then the magnet in the switch pushes the ball down and the sensor arm blocks the LED again. This registered as "no filament", then the printer unloads the remaining filament and requests a filament change. When the switch is in the open position 'X' then the magnet is no longer strongly repelling the magnet in the lever since it's been moved further away. This makes it easier to insert soft filament by offering less resistance.
RE: Core One Plus filament switch
Awesome good to know, thanks!
RE: Core One Plus filament switch
If you watch this video from around the 6:30 mark you will see how the standard filament sensor works. You can see that inserting the filament pushes the ball down, hence the arm moves from blocking the sensor - and this ball is where you get resistance when inserting the filament.
The new assembly has a switch that pulls the ball down and out of the way so it's easy to insert filament with no resistance. Best for flexible filaments like TPU.