Replaces the mains inlet foot part in the V0.2 to allow for the use of an external DC power supply (and consequently a 24V bed heater, since you no longer have mains power on the printer). This is based on the "Voron 0 DC inlet" mod by arkeet.
- Kycon KPJX-PM-4S connector (Digi-Key)
- Mean Well GST163A24-R7B power supply (Digi-Key)
- Power switch, 20mm round, rated for at least 7A at 24VDC (Digi-Key)
- 2x quick disconnect terminal for power switch (Digi-Key)
- 24V 60W bed heater (Keenovo)
- 4x M2x10 self-tapping screw
- 18AWG wire
- Heatshrink tubing
There are several implications to not having mains power in your printer:
- 24V bed heater can be safely run at 100% power
- No need for a 24V power supply on the printer itself means a lot more availabe room
- You can utilize a 24V-5V step down converter to power your Raspberry Pi instead of needing a separate 5V PSU
I recommend using Wago lever nuts and ferules to simplify your wiring and keep it neat and tidy!
- Prepare the foot as per the Voron V0.2 manual (i.e., insert heatsets).
- Solder the wires between the Kycon connector and the switch prior to installation. Use the quick-connect terminals on the switch side. Be sure to install heat-shrink tubing over all exposed areas (see figures 2 & 3). Also ensure that the inlet bracket is in place before soldering the connector!
- Route the bracket, connector, and wires through the switch opening in the DC inlet foot. Don't screw the bracket to the connector until after you've run them through the switch opening -- the connector is a tight fit but if you angle it correctly it will go through!
- Screw the inlet bracket to the connector (see figure 4).
- Snap the switch into place (see figure 5).
- Screw the inlet bracket into the inlet foot (see figure 6).
- Connect the switch to your controller board's 24DC in.
