Adafruit Snap-on Translucent USB Dongle Case - 48 x 22 x 12mm

This simple Snap-on USB Dongle Case is an affordable solution for transforming a bare PCB into a more robust project enclosure, provided you can control the PCB design shape. It's a cost-effective alternative to custom 3D printed cases or expensive injection molding. Ideal for USB power monitoring boards, this case is crafted from grey translucent plastic, allowing visibility for small screens or LEDs.

Comprising three pieces, two sections snap over the PCB to secure it, while the third serves as a USB A port cap. The inclusion of a button lever makes it easy to incorporate a low-cost tactile switch for resetting or mode switching. Originally designed for USB A plug and socket use, it offers flexibility with other small connectors. For instance, a board with a USB A plug on one end and terminal blocks on the other fits well inside.

This case effectively safeguards your USB dongle from everyday wear and tear, though it's not suited for waterproof or weatherproof needs. Cables, boards, and accessories are not included, and precise PCB design is required for a snug fit. Using calipers and the provided diagram, achieving a satisfactory fit with minimal revisions is achievable.