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This is a small rack to hold and power my complete DCC++EX setup. I am using Raspberry Pi 4B that runs JMRI, an Arduino Uno or Mega with either the DCC++EX motorshield or the standard Deek Robot (Arduino clone) motorshield and an Arduino Mega with a senor shield.

The base contains all the power distribution for the entire rack along with an on off switch. The Pi is powered via a buck convertor that then feeds a USB-C breakout board. This is then connected to another USB-C breakout board that then powers the Pi via the GPIO pins.

The rack uses 120mm lengths of 1\" aluminum extrusions. The top holes have been tapped for \u00bc -20 screws.

BOM: (Please Note Amazon links are affiliate links)

Qty	Description	Links
4	\u00bc -20 Flat Head Screws	https://www.mcmaster.com/91253A542/
4	\u00bc -20 Button Head Screws	https://www.mcmaster.com/97763A267/
32	M3 Heat Set Inserts (there are 8 per rail insert)	https://www.mcmaster.com/94459A130/
16	M3 x 6mm SHCS	https://www.mcmaster.com/90751A110/
32	M2 Heat Set Inserts	https://www.mcmaster.com/94459A110/
32	M2 x 4mm SHCS	https://www.mcmaster.com/91292A004/
1	MP1584EN DC-DC Buck Converter	https://amzn.to/3smEWL6
2	USB-C Breakout Boards	https://amzn.to/3qDLIvq
1	2.1mm Barrel Jack	https://amzn.to/3KO74Ny
1	SPST Rocker Switch	https://amzn.to/3P5u655
1	6in USB-C to USB-C cable	https://amzn.to/3P2MAmK
2	6in USB-A to USB-C cables	https://amzn.to/3qH53vO

For the thumbscrews I used https://www.printables.com/model/472195-thumb-screw-knob/files

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