Bambu Dual USB w Switches & Fan

Works with Bambu Lab X1, X1C, and P1P printers.

The Bambu Dual USB with Switches and Fan is for the Bambu Lab 3D printer.  It utilizes the 24v provided by the Bambu Bus Cable to power the two USB Ports.  Uses 4-pin Molex cable connectors to avoid the need to cut into a Bambu Communication cable.

The fan moves air across the USB boards to ensure they stay cool when providing continuous power to a device. It is intended for use on a Bambu Lab printer with a heated chamber for printing high-temperature filament.

Items Needed to Construct the Bambu USB 440:

• 2x Molex 4 pin, CONN-TH_0430450400
• 1x Power Tap 446 V1.3 PCB
• 1x JST Connector 2-Pin
• 2x Single USB DC-DC Buck Converter Charging Step Down Module 6-32V 
• 1x 3010 24v fan with JST Connector 2-pin
• 1x M3x40mm screw
• 3x M2x4mm screws
• 1x M2x6mm screws

Assembled units and kits for sale at 3DMachinist Etsy Store

• Kits (PCB Board, USB Board, screws)
• Power Tap PCB (446)
• Bambu Lab 4-Pin Cable

Installation

Install the Bambu USB / Power Tap on the back of the printer at the position of the top center screw hole using a M3x40mm screw. 

Use the Bambu Bus Cable to connect the printer; use a second Bambu Bus Cable to connect it to the Filament Buffer.

Specification

• Materials: Plastic, metal, printed circuit board
• Print size: 66.2*52*37 mm

Recommendations

• Filament: PETG
• Infill: 25%
• Support: Yes
• Brim: Auto

History

I had installed LED lights on my X1C, using a 6-Pin cable to access the 24v provided by the printer (by plugging it into the second AMS 6-Pin port).  That worked great when I only had one AMS, but the cable length became a concern when I added my second AMS.

I designed a Power Tap box to draw 24v using two 4-pin Bambus Bus Cables, which allowed me to avoid cutting into a 4-pin cable. 

Assembled units and kits for sale at 3DMachinist Etsy Store

If you would like to buy me a cup of coffee.