Bambu USB 446

Bambu USB 446

The Bambu USB is for the Bambu Lab X1 3D printer.  It utilizes the 24v provided by the Bambu Bus Cable to power the two USB Ports/6-Pin Connector.

Items Needed to Construct the Bambu USB:

• 2x Molex 4 pin, CONN-TH_0430450400
• 1x Molex 4 pin, CONN-TH_0430450600
• 1x Power Tap V2.0 PCB
• 1x Dual USB Fast Charger Buck Module Input 24V 
• 1x 3Mx25mm Screw
• 2x M2x4mm Screws
• 2x M2x6mm Screws

Assembled units and parts are for sale at 3DMachinist Etsy Store:

• Kits (PCB Board, USB Board, screws)
• Power Tab PCB (440, 446)
• Bambu Lab 4-Pin Cable

Installation

Install the Bambu USB 446 on the back of the printer using the top center screw via an M3x22mm screw. 

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

Specification

• Materials: Plastic, metal, printed circuit board
• Input: 24V 3A
• USB Output: default 5V
• Print size: 66.2*52*22 mm
• 1x M3x22mm Screw
• 2x M2x4mm Screws
• 2x M2x6mm Screws
• 2x Bambu Bus Cable (available through the Bambu Lab Store)

Recommendations

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

History

I had installed LED lights on my X1C, using a 6-Pin cable to access the 24v provided by the printer to the AMS unit (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 with a 6-pin connector to draw 24v from the 4-pin Bambus Bus Cable.  I then added a USB Board to the STL design to provide additional options in the future.

Assembled units and parts are for sale at 3DMachinist Etsy Store

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