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Assembly

The PCB (92 × 99.5mm) supports three enclosure layouts using standard Hammond 1455 cases.

Enclosure Variants

VariantLayoutCaseHDDDimensions (W×H×L)
Slimside-by-sideHammond 1455L22012.5"103 × 30.5 × 220mm
CompactsandwichHammond 1455T16013.5"165 × 51.5 × 160mm
Wideside-by-sideHammond 1455T26013.5"165 × 51.5 × 260mm

Slim variant (2.5" SSD): PCB and drive sit side-by-side with the SATA connector direct-mating between them.

Compact variant (3.5" HDD): PCB stacks on top of the HDD (sandwich layout), connected with a short 22-pin SATA extension cable (right-angle end on HDD side).

Wide variant (3.5" HDD): PCB and drive sit side-by-side in a wider case. The 1455T profile (165mm wide) may have longer lead times than the common 103mm-wide cases.

Compact Variant — SATA Cabling

The sandwich layout requires a short SATA cable between the PCB (on top) and the HDD (below).

Parts needed:

  1. SATA 22-pin right-angle adapter (male-to-female, 90° bend) — mounts on the HDD
  2. SATA 22-pin extension cable (~10cm, straight connectors)

Assembly:

  • Push the HDD to the front of the case (SATA connector facing the end plate)
  • Attach the right-angle adapter to the HDD’s SATA port (bends the connector flat against the drive top, ~12mm height)
  • Route the extension cable from the adapter up to the PCB’s J4 connector
  • The 13mm space behind the HDD (case is 160mm, drive is 147mm) provides room for the cable to fold

Clearance budget:

  • HDD top to PCB bottom: ~21mm available
  • Right-angle adapter height: ~12mm
  • Cable bend: ~5mm
  • Margin: ~4mm

End Plate

The connector-side end plate has cutouts for: barrel jack (12V DC), RJ45 (Ethernet), USB-C (OTG), tactile button, and RGB LED (light pipe).

Parametric design in OpenSCAD — generate for CNC machining or 3D printing:

# DXF for CNC laser/mill (variants: slim, compact, wide)
openscad -o end-plate-compact.dxf -D 'variant="compact"' -D 'mode="2d"' end-plate.scad

# STL for 3D printing
openscad -o end-plate-compact.stl -D 'variant="compact"' -D '$fn=64' end-plate.scad

Pick and Place

Interactive feeder map showing the OpenPnP feeder allocation for machine placement.

Downloads

FileFormatDescription
end-plate.scadOpenSCADParametric end plate source
1455-case.scadOpenSCADParametric Hammond 1455 case

Slim (2.5" HDD)

Slim (2.5" HDD)

Compact (3.5" HDD sandwich)

Compact (3.5" HDD sandwich)

Wide (3.5" HDD side-by-side)

Wide (3.5" HDD side-by-side)