My Build 350mm Voron 2.4

Hotend Configuration

Steps

• Working on the hotend, specifically dialing in the Stealthburner.
• Multiple disassembles of the unit were necessary.
• Commands used:

- `m564 S0 H0` to allow steppers to move without homing. - `extruder run G1 E100 F60` to test extrusion. - `M563 P0 D0` to configure the extruder. - `M84` to release motors. - `M302 P1` to allow cold extrusion. - `M84 E0:1:2` to disable specific motors.

Hotend Issues

Problem

• Issues with the hotend, particularly with the 1LC CAN bus board, which made the assembly bulky and difficult to manage.
• The expensive print head clogged frequently.
• The hotend fan runs off the Duet control and its default is off, leading to overheating if the heater is on without the fan.

Solution

• Considering switching to the first-gen print head.
• Ordered injection-molded parts for a better assembly technique.

Motor Configuration

Overview

• Configuring motors on a Voron 2.4 with a Duet 3 6HC.

Parts

• Duet 3 6HC with integrated stepper drivers (Driver 0–5).
• Motors for X, Y, Z1, Z2, Z3, and Extruder (E0).

Steps

• Motor-to-driver mapping:

- X Motor: Driver 0 - Y Motor: Driver 1 - Z Motor (Front Left): Driver 2 - Z Motor (Front Right): Driver 3 - Z Motor (Rear Center): Driver 4 - Extruder Motor (E0): Driver 5

• Configuring the motors in RepRapFirmware:

- `M584 X0 Y1 Z2:3:4 E5` to map the drivers. - `M671 X-10:310:150 Y10:10:345 S10` to define physical Z lead screw locations.

Notes

• The order of Z motors doesn’t matter for physical connection but must be defined properly in firmware for bed leveling and Z tilt correction.
• Configuring the system with unshielded motor cables can cause false phase errors and intermittent shutdowns.

Z Motor Issues

Problem

• Z motor (right rear) experienced phase short errors, causing the motor to quit.
• Replacing the motor and Duet 3 6HC did not resolve the issue.

Solution

• Immediate fixes:

- Reduce Z motor current slightly using `M906 Z800`. - Adjust acceleration and jerk settings: - `M566 Z4` for jerk. - `M203 Z300` for max speed. - `M201 Z20` for acceleration. - Temporarily move the motor to a different driver port.

• Long-term fixes:

- Replace with shielded, twisted pair cable. - Use crimped JST VH or Molex connectors.

Configuration

• Driver wiring:

- Driver 0 = Z3 - Driver 1 = B - Driver 2 = A - Driver 3 = Z0 - Driver 4 = Z1 - Driver 5 = Z2

• Sys.cfg:

```plaintext ; Configuration file for RepRapFirmware on Duet 3 Main Board 6HC ; Executed by the firmware on start-up ; ; Generated by RepRapFirmware Configuration Tool v3.5.4 on Wed Jul 24 2024 ; General G90 ; Absolute positioning M83 ; Relative extruder moves M550 P"Duet 3" ; Set hostname ```

Lessons Learned

• Unshielded motor cables can cause false phase errors and intermittent shutdowns.
• Proper configuration and wiring are crucial for reliable operation.
• Regular disassembly and cleaning can prevent clogs in the hotend.