伺服控制喷嘴清洁刷

Since my hotend cannot move off the heatbed I need to have the nozzle brush above the bed when cleanng but off the side when idle.
small video:
Be aware that the length and angle of the arm holding the servo is specific for my printer, so you may need to modify the attached fusion 360 file.
The mount of the arm is for a 2020 extrusion using 2 2020 t nuts and 4mm screws.
The brush used:
The servo used:
Just cut of the the handle of the brush to size. And the arm that folows with the serve is glued onder the brush holder and screwed to the servo
For the Duet WIFI I connected it:
servo Duet
GND(brown) pin 30 GND
5V(red) pin 1 5V
signal(orange) pin 13 Heater 4
Then in the config.g
M307 H4 A-1 C-1 D-1 ;disable heater 4 to be used to control brush servo
Then use
M280 P4 S0 to store the brush
and
M280 P4 S160 to deploy the brush
this depends a bit on how you orient the brush on the servo
My start.g deplays, moves the head and stores the brush
G21 ;metric values
G90 ;absolute positioning
M107 ;start with the fan off
G29 S2
G29 S1
M376 H10 ;taper off bed level compeation
G1 X15 Y15 Z5
G1 Z0.2 F3000 ;move the platform down
G1 F1200
G1 X115 Y5 E10
G1 Z21.75 F3000 ;move the platform down
M280 P4 S160 I1
G4 P1000
G1 X184 Y0
G1 X189 Y5
G1 X194 Y0
G1 X198 Y5
G1 X198 Y0
G1 X184 Y0
G1 X184 Y0
G1 X198 Y0
G1 X184 Y0
G1 X198 Y0
G1 X184 Y0
G1 X198 Y0
G1 X184 Y0
G1 X198 Y0
G1 X150 Y0
M280 P4 S0 I1
G4 P1000
G1 X15 Y15
G92 E0 ;zero the extruded length