BTT (BIQU) Microprobe Mount for "The 100 v1.1" printer (v2.1)

Updates to V2.1

• Changed the mounting holes for the microprobe from 2.8 to 3mm.
• Opened the X axis of the hole for the probe by 0.2mm to make it easier to insert the probe.

This is an update to my previous v1.0 model.

Since there wasn't a mount specifically for the BTT Microprobe, I created one. I look forward to other's input on improving this design. Hopefully someone way better than me with CAD will come out with a mount that gets closer to the nozzle. 

I printed mine with these settings:

• Polymaker ASA (due to the close proximity to the nozzle) you can print this in PLA also.
• 270C
• 18 mm3/s flowrate
• 0.26mm layer heigh
• 0.6 width
• 30% gyroid infill
• 5 top 5 bottom 5 walls
• NO SUPPORTS NECESSARY!

I used 2 ea. M3x16 SCHS to mount the probe, and tightened the screws to adjust the probe close to the nozzle height. You should be able to go + or - 2mm from the nozzle. The spacer goes in between the mount and carriage. 

Here's my Klipper config settings (I saved it as a seperate BTT_Microprobe.cfg file and placed [include BTT_Microprobe.cfg] in my printer.cfg). You'll have to keep it in your printer.cfg because the “probe” field is used during bed_mesh_calibrate and for probe_calibrate:

BLOCK 1:

# BTT_Microprobe.cfg

# Chinstrap777's BTT Microprobe v2 with "The 100 v1.1" printer and "BTT Microprobe Mount for 'The 100 v1.1' printer (v2.1)" 
# Connected to "SERVOS" with the 3-wire connection and "PROBE" with the 2-wire connection on the BTT SKR Pico
# servos=gpio29 (yellow wire)
# probe=probe (white wire)

[output_pin probe_enable]
pin: gpio29
value: 0

[gcode_macro Probe_Deploy]
gcode:
 SET_PIN PIN=probe_enable VALUE=1

[gcode_macro Probe_Stow]
gcode:
 SET_PIN PIN=probe_enable VALUE=0

[safe_z_home]
home_xy_position: 75, 24 # Change coordinates to the center of your print bed
speed: 100
z_hop: 10                 # Move up 10mm
z_hop_speed: 10

[gcode_macro PROBE_ACCURACY1]
gcode:
 G90
 G1 Z20
 G1 X75 Y24 F3000
 PROBE_ACCURACY

[gcode_macro PROBE_CALIBRATE1]
gcode:
 G90
 G0 Z20
 G0 X75 Y24 F3000
 G0 Z5
 PROBE_CALIBRATE SPEED=1000

BLOCK 2:

And here's what I added to my PRINTER.CFG

[include BTT_Microprobe.cfg]

[probe] # this must be in the printer.cfg to ensure "SAVE CONFIG" works. The auto-generated values can only be sent to the printer.cfg and not other .cfg files
pin: ^!gpio22
deactivate_on_each_sample: False # true for probing without retracting probe after every contact (this is faster). Must also uncomment next line when changing this to FALSE
# probe_with_touch_mode: true # uncomment this line if changing "deactivate_on_each_sample: " to TRUE
# stow_on_each_sample: false # change this to TRUE and uncomment if setting "deactivate_on_each_sample: " to TRUE
x_offset: 0.0
y_offset: 51.0
#z_offset: 1.010 # this needs to be uncommented for the first calibration
speed: 4 # THIS IS THE Z SPEED WHILE PROBING
lift_speed: 30 # THIS IS THE Z SPEED AFTER PROBING
samples_tolerance: 0.01
activate_gcode:
 Probe_Deploy
 G4 P500
deactivate_gcode:
 Probe_Stow

Tips:

• Ensure your probe is mounted perpendicular to your bed and straight with the toolhead.
• I used 2 ea. M3x 14mm socket head screws to mount the probe to the bracket, the original holes on the probe are M2.5. I would drill the holes on the probe itself out, but to just under 3mm to allow the screws to bite into the probe.
• Mount the probe so that the tip is 1-2mm above the tip of the nozzle. The easy way is to put your nozzle on the bed and then adjust the probe.

Installation

1. Turn your printer off.
2. Install the probe to the mount. 
   • 2 ea. M3x14 or M3x16 screws
3. Install the mount (with the probe) to the toolhead.
   • Use the original screws for 2 of them, and 2 ea. M3x16 for the mount through the spacer.
4. Install the cable for the probe.
   • Route the cable from the probe, through the cable sleeve/wrap for the toolhead, to the controller board. I had to extend mine by splicing it using 24 ga. silicone wire.
5. Push the toolhead to the Y endstop.
6. Turn your bed leveling knobs all the way tight, then back off 3-5 full rotations.
7. Manually raise the bed by twisting the Z leadscrews the same direction, to the endstop. This ensures your bed mount is level with the gantry.
8. Turn on your printer.
9. Create BTT_Microprobe.cfg and paste the first block of settings into it.
10. Update your PRINTER.CFG by adding the second block of settings. 
    • Be sure to uncomment the Z_OFFSET line before your first calibration. Afterwards, your offset will be saved in the autogenerated section at the bottom of PRINTER.CFG
11. Run PROBE_CALIBRATE1 and hit SAVE_CONFIG. https://www.klipper3d.org/Probe_Calibrate.html?h=calibrating+probe+z+offset#calibrating-probe-z-offset 
12. Run BED_MESH_CALIBRATE1 at whatever bed temperature you're going to print with.
13. ALL DONE! Happy printing!