FLSUN T1 Pro BTT SFS v2 Mount

This mount replaces the stock spool holder.  The factory M3x6 screws can be used for the mount.  The BTT needs some M3x10 screws.  The screws in BTT kit are too short.

Sensor is aligned with the hole in top of printer to feed filament from an external dryer.

I cut the provided BTT cable shorter and crimped on female dupont contacts for using the 2x3 jtag header on the motherboard.  Red 3v3, Black Gnd, Blue DIO and Green CLK.  This puts the switch on pin PA13 and motion on pin PA14, and they need pull up resistor enabled.

[filament_switch_sensor btt_sfs]
pause_on_runout: True
runout_gcode: 
switch_pin: ^PA13

[filament_motion_sensor encoder_sensor]
switch_pin: ^PA14
detection_length: 2.88
extruder: extruder