Smart Switch Box – ESP32 + PSU

3D Printed Switch Box – Assembly & Mounting Guide Overview This is a custom-designed 3D printed enclosure, printed in black PLA, intended to house 4 rocker switches (reference switches on Amazon), an ESP32 development board, and a mini AC-DC power supply module (reference PSU on Amazon). The box features a rear slide-in closure panel and a perforated back wall for cable routing and passive airflow. Parts Main box (printed in black PLA) — houses all components Rear closure panel (slide-in, printed in black PLA) — closes the back of the box Hole covers (printed in red PLA, 3×3 grid layout) — decorative and structural covers for the switch mounting holes Assembly Instructions 1. Fit the Rear Closure Panel The rear panel slides vertically into dedicated grooves on the sides of the box. Before inserting it, lightly file or sand the edges of the rear panel to ensure smooth insertion. A few passes with fine-grit sandpaper (120–180 grit) or a flat file on the sliding edges should be sufficient