Voron V0 Chamber Exhaust Fan

Inspired by the Prusa Core One chamber fan, I designed this mod to enable my Voron V0 to print PLA without needing to remove the top hat.

BOM:

• 2x 5010 24v Fan
• 8x M3x16 Screws
• 8x M3x5x4 Brass Heatset Inserts

Wiring:

• Daisy-chain the two fans and route the cable through the umbilical hole.
• If you’re using a CAN bus toolhead board like me, your fan port is likely on the SKR Mini E3 (or SKR Pico, depending on your setup). I recommend connecting to the FAN0 port.
• If you don’t have an available fan port, connect the fans to a switch and then to the POWER port. With this setup, you’ll need to manually turn the fans on and off.

Firmware config:

Assuming you’re using the FAN0 port as described, add the following configuration to your printer.cfg file:

[fan_generic chamber_exhause_fan]
pin: PC6
max_power: 1.0
kick_start_time: 0.5

Controlling the fans:

• To start the fan, use this gcode command (the speed is from 0.0 to 1.0):
  SET_FAN_SPEED FAN=chamber_exhause_fan SPEED=0.5
• To stop the fan, use this gcode command:
  SET_FAN_SPEED FAN=chamber_exhause_fan SPEED=0.0

Note: Add these commands to the start G-code and end G-code sections of the PLA filament profile in your slicer to automatically start and stop the fan.