30-Pin ESP32 Breakout Enclosure (v7)

Description

This enclosure is built around one specific pairing: the 30-pin USB-C ESP32 dev board seated on its 2×15 screw-terminal breakout board (the one that measures about 63 × 66 mm). The walls print solid, with thin-skin knockouts you cut out only where you need a wire, a cable gland or a sensor lead. The rest stays closed.

I printed and test-fit it on my Bambu Lab A1 before posting it. The board drops in and the mounting holes line up. The USB-C opening sits right on the port, so a cable plugs straight in. A PG7 gland snugs down in a side knockout, and its locknut clears the board. The cable clamp holds a ~4 mm sensor cable, like a DS18B20 lead.

It prints as three parts (base, lid and clamp cap) with no supports. The OpenSCAD source is included if you want to change things.

Features

• Thin-skin knockouts that look like solid wall until you cut one out:
  • Each terminal-side wall has one PG7 (12.5 mm) round between two 10 × 6 mm slots.
  • The sensor wall has two 5 mm rounds.
• A 4.7 mm sensor-cable hole with a screw-down strain-relief clamp.
• Break-off mounting tabs for #6–#8 screws (4.3 mm holes). Mount it to a wall, or snap the tabs off for a plain box. They break cleanly and leave a small nub.
• A 4 mm screw-down lid with a locating groove.
• Parametric OpenSCAD source with Customizer options for the tabs, clamp, each knockout wall, vents and lid holes. It needs OpenSCAD 2021.01 or newer.

Tip: an X-Acto #104 concave carving blade opens the knockouts cleanly.

Parts used

The board and breakout I designed around: AITRIP 30-pin ESP32 Type-C dev board + breakout (3 sets)