====== 2in1 Hotend ======

based on: 
  * https://klipper.discourse.group/t/x-in-1-out-non-mixing-extruder-config/2387
  * https://klipper.discourse.group/t/x-in-1-out-non-mixing-extruder-automate-superslicer-prusaslicer-filament-swaps/5285

===== Extruder einrichten =====
  * Es sind 2 Extruder konfiguriert ''[extruder]'' und ''[extruder_stepper extruder1]''
  * Der 2te Extruder hat das Setting ''extruder:'' \\ siehe dazu https://www.klipper3d.org/Config_Reference.html#extruder_stepper
  * Beispiel (ohne TMC Part) \\ <code>
[extruder]                                # Extruder 1 (Links)
step_pin                 : PE0
dir_pin                  : PC13
enable_pin               : !PC14
microsteps               : 16
full_steps_per_rotation  : 200            # Steps per rotation (200 for 1.8° motors, 400 for 0.9° motors)
rotation_distance        : 7.912          # Pulley circumference in mm
7.5:1—comment out this line; BMG is 50:17, output shaft first, input shaft second)
nozzle_diameter          : 0.400               # Nozzle diameter
filament_diameter        : 1.750            # Filament diameter
heater_pin               : PD14                    # Heater control pin for the extruder (e0)
sensor_type              : ATC Semitec 104GT-2           # Sensor model
sensor_pin               : PC2                     # Extruder sensor pin (T_E0)
max_power                : 1.0                      # Maximum heater power (PWM)
min_temp                 : -100                      # Minimum extruder temperature
max_temp                 : 350                       # Maximum extruder temperature
min_extrude_temp         : 150               # Minimum extrusion temperature (extrusion will only happen if this temperature is reached)

[extruder_stepper extruder1]           # Extruder 2 (Rechts)
extruder:
### The extruder this stepper is synchronized to. If this is set to an
### empty string then the stepper will not be synchronized to an
### extruder. The default is "extruder".
step_pin                 : PE7
dir_pin                  : PE11
enable_pin               : !PE10
rotation_distance        : 8.022
full_steps_per_rotation  : 200
microsteps               : 16
</code>
  * Damit haben wir einen Extruder der einem Hotend zugewiesen ist und einen Extruder ohne Hotend Bezug.