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Enclosures & cases
Project box for an ESP32 dev board with USB opening
A compact housing for a 30-pin ESP32 DevKit board that leaves the USB connector exposed for programming and power while covering the pins. Inside, two rails with 0.4 mm clearance grip the board edges so no screws are needed, walls are 1.8 mm, and a 12 x 7 mm cut-out lines up with the connector. Side vents let heat out, and the lid slides in on a dovetail so the box can be opened repeatedly without wearing out clips. Open the ready-made model free, resize it on your phone or computer, then download a print-ready STL, 3MF or G-code sliced for your printer, free.Opening the ready-made model and downloading it as STL or 3MF are free, no card; AI changes use credits, from Maker at $7.99 a month.No printer? We print this part and ship it to your door. See its priceUpdated
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Adjust
Change its numbers in the viewer for free, or ask the AI in the chat: wall thickness, hole size, the thing it clips onto. AI changes use 2 credits per request (1 for a quick edit, 3 for a redesign), paid with a plan from Maker at $7.99 a month.3Print
Download a watertight STL or 3MF free, with your numbers and hand edits, or G-code sliced for your printer at the same price. After an AI change the download is included in every plan (4 credits without one).
Dimensions of the ready-made model (editable)
| Parameter | Value |
|---|---|
| clearance around board | 0.4 mm |
| internal height | 18 mm |
| rail ledge width | 2 mm |
| rail ledge thickness | 1.5 mm |
| above floor | 3 mm |
| dovetail groove depth | 3 mm |
| wide end of dovetail (top) | 5 mm |
| narrow end (bottom, matches wall) | 3 mm |
Example prompt
Design a project box for an ESP32 DevKit board 55x28x13 mm. Internal rails holding the board edges with 0.4 mm clearance, 1.8 mm walls, 18 mm internal height. 12x7 mm USB cut-out on one side, 3 mm above the floor. Sliding dovetail lid and six 10x2 mm vent slots.
Fit notes
ESP32 boards come in a dozen footprints, and SpeakCAD sizes the rails and connector opening to the one you have, with room for an antenna or a status LED window if you ask. Try the preview in your browser and widen the slot or add a reset button hole in the next message.
Questions people ask about a project box for an ESP32 dev board with USB opening
A compact housing for a 30-pin ESP32 DevKit board that leaves the USB connector exposed for programming and power while covering the pins. Inside, two rails with 0.4 mm clearance grip the board edges so no screws are needed, walls are 1.8 mm, and a 12 x 7 mm cut-out lines up with the connector. Side vents let heat out, and the lid slides in on a dovetail so the box can be opened repeatedly without wearing out clips.
Click Open it free on this page and create a free account (no card): the ready-made model opens in your browser, on your phone or computer, nothing to install. Change its numbers in the viewer for free and download a watertight STL or 3MF free, or G-code sliced for your printer at the same price. An AI change in the chat uses 2 credits per request (3 for a redesign), and the download after it is included in every plan (4 credits without one). Start with Maker: 50 credits a month for $7.99, cancel anytime.
On this page: open the ready-made model free in a SpeakCAD account (no card), change any dimension in the viewer, then download the STL or 3MF free, or G-code sliced for your printer at the same price.
A shared STL is modelled for someone else's measurements. Here you open the ready-made model free, change it to your measurements in the viewer, then download a file sized for the part you actually own, free as STL or 3MF.
Yes. SpeakCAD slices the part on its servers with OrcaSlicer and your printer's official profile (380+ printers, including Bambu Lab, Prusa, Creality and Elegoo), and you download the G-code (a sliced .gcode.3mf for Bambu Lab printers). G-code sliced for your printer costs the same as the STL: included in every plan, free for a part you shaped by hand, 4 credits without a plan for a part with AI work in it. Pick your printer on the printers page to see its profile.
No. SpeakCAD runs in the browser on your phone or computer: the chat, the 3D engine and the live viewer load in the tab. The only file you download is the finished STL, 3MF or sliced G-code.
Print it your way
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