Voron Trident Initial Startup
Manta M8P V2.0 + EBB SB2209 RP2040 (CAN), Klipper + Mainsail

Follows the Voron Initial Startup guide (V1/Trident). Run commands in the Mainsail console. Tick boxes as you go (they reset on reload).

1. Pre-power checks

Mains wiring: earth to frame/bed, fuses, PSU set to correct voltage
24V polarity at the Manta and EBB (CAN cable: 24V, GND, CAN-H, CAN-L)
No loose strands or shorts; bed/heater wires strain-relieved
120Ω jumper ON at EBB, Manta CAN termination on, EBB VUSB jumper OFF
Belts tensioned, gantry moves freely by hand, Z lead screws free

2. First boot & MCUs

ip -s link show can0
python3 ~/katapult/scripts/flashtool.py -i can0 -q   # with klipper stopped
ls /dev/serial/by-id/

The Manta is a USB-to-CAN bridge, so both MCUs use canbus_uuid:

[mcu]
canbus_uuid: <manta_uuid>

[mcu EBBCan]
canbus_uuid: <ebb_uuid>

Mainsail shows Ready, no MCU errors
Both mcu and EBBCan listed under Machine → System Loads

printer.cfg pins: Manta M8P V2.0 (from BTT's V2.0 config)

Driver	step	dir	enable	endstop	Typical Trident use
M1	PE6	PE5	!PC14	PF4	stepper_x (A)
M2	PE2	PE1	!PE4	PF3	stepper_y (B)
M3	PB8	PB7	!PE0	PF2	stepper_z
M4	PB4	PB3	!PB6	PF1	stepper_z1
M5	PG13	PG12	!PG15		stepper_z2
M6–M8	PG9/PD7/!PG11 · PD4/PD3/!PD6 · PC7/PC8/!PD2				spare

Assign drivers to match your wiring: Voron's convention is stepper_x = A (back left), stepper_y = B (back right). Extruder is on the EBB: step_pin: EBBCan:gpio18, dir_pin: EBBCan:gpio19, enable_pin: !EBBCan:gpio17.

3. Thermistors & temps

Hotend and bed read room temp (~20–25 °C) in Mainsail
Pinch the hotend/bed thermistor: only that reading rises
Chamber/MCU temps (if configured) sensible

If the wrong sensor rises, thermistor or heater connections are swapped.

4. Heater PID tuning

PID_CALIBRATE HEATER=extruder TARGET=245

PID_CALIBRATE HEATER=heater_bed TARGET=100

SAVE_CONFIG

Extruder PID done
Bed PID done
SAVE_CONFIG run (Klipper restarts)

5. Fans

SET_FAN_SPEED FAN=<fan_name> SPEED=0.5

M106 S255   ; part cooling fan
M107        ; off

Hotend fan ([heater_fan]) spins once the extruder is above 50 °C
Part cooling fan responds to M106/M107
Controller/exhaust fans run

6. Endstops

QUERY_ENDSTOPS

All should read open. Press each switch by hand and re-run: that one should read TRIGGERED. Invert with ! or pull-up with ^ on endstop_pin if needed.

X: physical switch on toolhead, or sensorless (tmc virtual_endstop, can't be hand-tested; tune driver_SGTHRS)
Y: physical switch, or sensorless
Z: Z endstop switch or probe (probe: hold metal under it, or use QUERY_PROBE)

QUERY_PROBE

7. Steppers: STEPPER_BUZZ

Each motor moves +1 mm and back, 10 times. Trident expectations (Voron docs):

Command	Expected
`STEPPER_BUZZ STEPPER=stepper_x`	Back-left (A) motor rotates clockwise first, then back
`STEPPER_BUZZ STEPPER=stepper_y`	Back-right (B) motor rotates clockwise first, then back
`STEPPER_BUZZ STEPPER=stepper_z`	Front-left of the bed moves down, then up
`STEPPER_BUZZ STEPPER=stepper_z1`	Back of the bed moves down, then up
`STEPPER_BUZZ STEPPER=stepper_z2`	Front-right of the bed moves down, then up
`STEPPER_BUZZ STEPPER=extruder`	Extruder moves (heat to 170 °C+ or set min_extrude_temp)

Backwards? Invert the direction pin: dir_pin: PE5 → dir_pin: !PE5 (remove the ! if already there). Wrong motor moves? Fix the cable or driver assignment.

8. CoreXY direction check (A/B)

⚠ Hand on the e-stop. Keep M112 typed in the console or use Mainsail's emergency stop; or be ready to cut power.

Run G28 X: bed drops slightly, toolhead should go right. If it goes anywhere else, e-stop, note the direction, FIRMWARE_RESTART, then test G28 Y: toolhead should go to the back.

G28 X moves	G28 Y moves	Fix
Right ✅	Back ✅	Nothing, correct
Left	Front	Invert both stepper_x and stepper_y dir_pin
Front	Left	Invert stepper_x (A) dir_pin
Back	Right	Invert stepper_y (B) dir_pin
Right	Front	Swap the A and B motor connectors (or swap pins between [stepper_x]/[stepper_y]), then re-test and use the rows above
Left	Back
Back	Left
Front	Right

9. Homing

G28 X
G28 Y
G28 Z

X homes right and stops on the endstop
Y homes to the back and stops
Z: bed rises to nozzle/probe and stops at the Z endstop/probe

Emergency stop tips: M112 halts instantly (then FIRMWARE_RESTART). If Z doesn't stop, kill power. Test the probe triggers (QUERY_PROBE) before the first G28 Z.

10. Probe, Z offset & Z_TILT_ADJUST

G28
PROBE_ACCURACY

Range should be well under ~0.0125 mm (standard deviation tiny). Then set Z offset:

G28
PROBE_CALIBRATE        ; probe used as Z endstop (paper test, TESTZ Z=-0.1, ACCEPT)
# or, with a physical Z endstop:
Z_ENDSTOP_CALIBRATE
SAVE_CONFIG

Level the bed with the Trident's 3 independent Z motors:

G28
Z_TILT_ADJUST
G28 Z

PROBE_ACCURACY consistent
Z offset saved
Z_TILT_ADJUST converges (final range below retry_tolerance)

11. Bed mesh

G28
Z_TILT_ADJUST
BED_MESH_CALIBRATE
SAVE_CONFIG

Check the mesh in Mainsail's Heightmap. Load it in the start macro with BED_MESH_PROFILE LOAD=default or mesh each print.

12. Extruder rotation_distance

Heat to printing temp; mark filament 120 mm above the extruder entry.
```
M83
G1 E100 F60
```
Measure what's left to the mark: actual = 120 − remaining.
new = old_rotation_distance × actual / 100, update [extruder] rotation_distance, RESTART, and repeat until within ~1 mm.

13. Input shaper & pressure advance

The EBB SB2209 RP2040's onboard accelerometer is configured as [adxl345] in BTT's sample config:

[adxl345]
cs_pin: EBBCan:gpio1
spi_software_sclk_pin: EBBCan:gpio2
spi_software_mosi_pin: EBBCan:gpio0
spi_software_miso_pin: EBBCan:gpio3
axes_map: z,-y,x

[resonance_tester]
accel_chip: adxl345
probe_points: 150, 150, 20   # bed center for a 300 mm Trident

sudo apt install python3-numpy python3-matplotlib libatlas-base-dev libopenblas-dev
~/klippy-env/bin/pip install -v numpy

ACCELEROMETER_QUERY
G28
SHAPER_CALIBRATE
SAVE_CONFIG

Graphs (optional): ~/klipper/scripts/calibrate_shaper.py /tmp/calibration_data_x_*.csv -o /tmp/shaper_x.png

Pressure advance: print a PA tower/pattern (e.g. Ellis' or the Klipper tuning tower), then set [extruder] pressure_advance (typical 0.02–0.06 direct drive).

SET_VELOCITY_LIMIT SQUARE_CORNER_VELOCITY=1 ACCEL=500
TUNING_TOWER COMMAND=SET_PRESSURE_ADVANCE PARAMETER=ADVANCE START=0 FACTOR=.005

14. First print & slicer start macro

[gcode_macro PRINT_START]
gcode:
    {% set BED = params.BED|default(100)|float %}
    {% set EXTRUDER = params.EXTRUDER|default(245)|float %}
    M190 S{BED}
    G28
    Z_TILT_ADJUST
    G28 Z
    BED_MESH_CALIBRATE
    M109 S{EXTRUDER}
    G90

[gcode_macro PRINT_END]
gcode:
    M400
    G92 E0
    G1 E-5 F1800
    TURN_OFF_HEATERS
    G91
    G1 Z10 F3000
    G90
    G0 X150 Y290 F6000
    M107
    M84

Slicer start G-code (OrcaSlicer/PrusaSlicer/SuperSlicer):

PRINT_START BED=[first_layer_bed_temperature] EXTRUDER=[first_layer_temperature]

End G-code: PRINT_END

Voron cube / calibration cube printed
First layer even across the bed
Re-tune Z offset live with Mainsail babystepping, then Z_OFFSET_APPLY_PROBE + SAVE_CONFIG

Voron Trident Initial StartupManta M8P V2.0 + EBB SB2209 RP2040 (CAN), Klipper + Mainsail