3D printer users are likely familiar with the 100% free 3D modeling applications offered by AUTODESK at 123dapps.com that include software for both Windows and Mac computers as well as iOS versions for iPad. These applications include the popular 123D Design CAD app, 123D Catch that allows users to create 3D models from a series of photographs of an object, and the colorful and kid-friendly CAD application Tinkercad.
AUTODESK has recently added a new (and still free) application called 123D Circuits that allows users to drag and drop electronics components to simulate circuits on screen. Users can even design circuit boards and have them printed by 3rd parties.
While this new app might feel out of place among the various 3D printer-related applications, it’s good to remember that many 3D printer hobbyists design enclosures such a robot bodies or cases for other electronic devices that are printed out with 3D printers. With 123D Circuits, users can now create circuit boards to fit inside those enclosures as well as test circuits before any 3D printing is done or electronics parts ordered. Registered users can also store all files related to projects with AUTODESK, making this collection of free apps a one-stop-shop for all hobbyists needs.
More information on 123D Circuits can be found at http://www.123dapp.com/