USB power plug I created for powering my Raspberry Pi off my printer's power supply. This allows me to use a single outlet to power my printer, Pi and camera. The Power Plug mounts to 4040 rails using an M5x10 bolt and corresponding t-nut. I have it mounted to the left hand rail because that is where my BTT Pi TFT50 enclosure is so I have a short run from the enclosure to the plug. Make sure you buy a USB plug that can accept 24v (like the one I have linked below) as that is the common voltage most printers use. If not you'll need to use a buck converter to go from 24v to 12v.

Items needed:

• USB plug: https://amzn.to/3XgVpNQ
• 4x M2x6 bolts (socket/pan/etc. will work): https://amzn.to/479NANm
• 2x M5x10 flat head bolts: https://amzn.to/3AQ0kwf
• 2x M5 t-nuts: https://amzn.to/4e0evgA
• 2x fork terminal (optional depending on your power supply): https://amzn.to/3X563pF

Install:

1. Print both pieces
2. Align USB plug into the box and then add the clamp ring, use an Allen key to spring the ring till tight
3. Feed the wires through the bottom and push them on to the USB plug
4. Add M5 screws and t-nuts to box, mount to rail
5. Add back cover with M2 screws
6. Gain access to your power supply and find positive and negative terminals. Depending on your power supply you can remove screws and place the ring terminal under the screw or remove the ring terminal and use a fork terminal or just bare wire to go under the screw. Snug up the screw and power on your printer.