Credits

ReDo is built on other people's work: a geometry kernel, the libraries the Playground is made of, and CAD drawn by part makers and libraries around the world. This page credits them. The licence texts themselves are in the third-party notices.

Software

What runs in your browser when you use the Playground.

Open CASCADE Technology8.0.1
The geometry kernel inside ReDoCore: it builds every solid the Playground draws and writes every STEP file it saves.
LGPL 2.1, with Open CASCADE's exception · © OPEN CASCADE SAS
Emscripten6.0.10
Compiles ReDoCore to WebAssembly. Its runtime, with musl's C library and LLVM's C++ library, ships inside the kernel.
MIT or NCSA · © the Emscripten authors
occt-import-js
Reads the STEP files you upload, with a build of Open CASCADE of its own.
LGPL 2.1 · © Viktor Kovács
Clipper
Unites a board's silk strokes and fills into outlines before the kernel builds them.
Boost Software License 1.0 · © Angus Johnson; translated to JavaScript by Timo
three.js
Draws the 3D view.
MIT · © the three.js authors
React
Builds the Playground's interface.
MIT · © Meta Platforms, Inc. and affiliates
React Three Fiber and drei
Join React to three.js: the viewport, the orbiting camera, the move gizmo and labels that face you.
MIT · © Poimandres and Paul Henschel
Zustand
Holds the Playground's state.
MIT · © Paul Henschel
three-mesh-bvh
Finds the part under the pointer quickly.
MIT · © Garrett Johnson
meshoptimizer
Packs and unpacks the meshes parts are drawn with.
MIT · © Arseny Kapoulkine
Monaco Editor
The code editor in Designer.
MIT · © Microsoft Corporation
Codicons
The code editor's icons.
CC BY 4.0 · © Microsoft Corporation
Supabase Auth
Signs you in.
MIT · © Supabase
Anthropic TypeScript SDK
Talks to the assistant's model.
MIT · © Anthropic, PBC
Standard Webhooks
Comes with the Anthropic SDK.
MIT · © Svix
StableLib base64
Comes with Standard Webhooks.
MIT · © Dmitry Chestnykh
fast-sha256
Comes with Standard Webhooks.
Public domain (Unlicense) · © Dmitry Chestnykh, dedicated to the public domain
Babel runtime
Small helpers drei and the Anthropic SDK are built with.
MIT · © Sebastian McKenzie and other contributors
tslib
Small helpers libraries written in TypeScript are built with.
0BSD · © Microsoft Corporation
Fredoka
The typeface of the Playground and this site.
SIL Open Font Licence 1.1 · © the Fredoka Project Authors
ReDo Sans
The font OpenSCAD's text() draws in: the outlines, advances and kerning of Liberation Sans Regular 2.1.5, converted for ReDoCore and renamed, as its licence asks of a modified version.
SIL Open Font Licence 1.1 · © 2010 Google Corporation, 2012 Red Hat, Inc.
Comfortaa
The name printed on the workmat: the outlines of Comfortaa Bold's letters, traced to ink lines.
SIL Open Font Licence 1.1 · © 2011 The Comfortaa Project Authors

Open CASCADE and the LGPL

The Playground carries two libraries under the GNU Lesser General Public License, version 2.1: Open CASCADE Technology 8.0.1, inside ReDoCore, with Open CASCADE's exception, and occt-import-js 0.0.23, which brings a build of Open CASCADE of its own. You may change these libraries for your own use, and reverse engineer the Playground to debug those changes.

Their source: Open CASCADE Technology 8.0.1, which ReDoCore builds unmodified, and occt-import-js.

For at least three years after we last ship this version of the Playground, we will give anyone who asks the complete source of both libraries, with the object code and instructions needed to relink ReDoCore against a changed Open CASCADE, for no more than it costs us to send them. Write to admin@redo.pro.

Part libraries

Most of the Inventory is built from CAD its makers publish. This is everyone whose CAD we use.

From	What we use	Licence	Parts
Pololu	Pololu's own published CAD	CC BY-SA 4.0	348 parts
DFRobot	The CAD DFRobot publishes on its product wiki	The maker's own terms	146 parts
SparkFun	SparkFun's 3D models, and the Eagle designs of its boards	CC BY-SA 4.0	132 parts
Adafruit	Adafruit's CAD parts, and the Eagle designs of its boards	CC BY-SA 3.0, The maker's own terms, MIT	99 parts
ROBOTIS	The DYNAMIXEL drawings ROBOTIS publishes	The maker's own terms	53 parts
FreeCAD Library	The FreeCAD parts library	CC BY 3.0	51 parts
CyberBrick	The module CAD Bambu Lab publishes for CyberBrick	The maker's own terms	37 parts
LEGO	The LEGO Group's own part models	The maker's own terms	15 parts
No named author	Models handed to us whose files name nobody: two breadboards, two NEMA 17 steppers and a few small modules, and two Bluetooth modules we drew from arc12's footprints	CC BY 4.0	9 parts
Microchip	Its chips' pinouts, on a package ReDo draws	CC BY-SA 4.0	3 parts
Raspberry Pi	Board models others drew, handed to us, and the HAT outline from Raspberry Pi's documentation	CC BY 4.0, CC BY-SA 4.0	3 parts
arc12	arc12's Eagle designs of two Bluetooth breakouts	CC BY 4.0	2 parts
Arduino	The UNO shield outline, from Arduino's published design	CC BY-SA 4.0	1 part
Bholanath	The motor CAD Bholanath Precision Engineering publishes	The maker's own terms	1 part
Bourns	The 3005 trimmer's dimensions, drawn by ReDo	CC BY-SA 4.0	1 part
Texas Instruments	A chip's pinout, on a package ReDo draws	CC BY-SA 4.0	1 part

Where the licence is the maker's own terms, the maker publishes its CAD without leave to pass it on. You can build with those parts in ReDo, and we never hand their models back: their pages offer only the maker's own link to the CAD, and a download leaves them out.

The other 178 parts we drew ourselves, in OpenSCAD, and publish under CC BY-SA 4.0 with one exception, as KiCad's libraries have: using them in a design, or in a file you export from one, doesn't make your design share-alike. Pass a part itself on, changed or not, and its licence applies as usual.

Our OpenSCAD library, the code our parts, your own designs and an agent's include, is under the MIT licence, so including it puts no licence on what you write.

Data and languages

LEGO part numbers are surveyed from Rebrickable's public data.
Designer reads the OpenSCAD language. ReDo's compiler for it is our own.

Names and logos

LEGO® is a trademark of the LEGO Group, which does not sponsor, authorize or endorse this site.

Arduino, Raspberry Pi, SparkFun, Adafruit, Pololu, DFRobot, ROBOTIS, DYNAMIXEL, CyberBrick, Bambu Lab, KiCad and every other product or company name and logo on this site belong to their owners, and appear here only to say whose parts are whose.