Ender 3 / V2 Under-Bed Raspberry Pi 4 + Relay + Buck Converter Enclosure (Modular Shelf)

I made this because I couldn’t find anything that cleanly fits a Raspberry Pi 4, relay module, and DC step-down converters all in one compact setup—especially mounted directly on the printer. This design mounts under the bed of an Ender-style printer and uses a drawer-style base + internal shelf layout to organize everything neatly. The Raspberry Pi sits in the main compartment while the relay module and buck converters are positioned above/alongside it for better use of space and cleaner wiring. The goal was to keep everything: Compact Accessible Mounted directly to the printer "Cleanly" wired (no loose modules hanging around) Designed around Raspberry Pi 4 dimensions Fits standard 4-channel relay modules Includes space for DC-DC buck converters Front cutouts for USB, Ethernet, and power Shelf-style internal layout to separate components Mounted under the bed to keep the frame clean Inspiration / Credits: This was inspired by a mix of other Raspberry Pi mounts and relay enclosures I’ve seen, but I ultimately modeled this from scratch to fit my exact setup. Because of that, I wasn’t sure whether to list this as a remix or credit specific designs. If you recognize elements from your work and would like credit (or removal), just leave a comment and I’ll update the files accordingly. Work in Progress: This is still a WIP. Better cable management features Mounting holes for specific relay/buck modules Optional lid / fan mount Version for other printers or Pi models If there’s something you’d like added, changed, or removed, leave a comment and I’ll update the design and upload the new files. If you build one, I’d love to see it 👍