In case you didn't already know: 123D Circuits is the newest addition to the 123D family of apps. One of it's finest attributes is the ability to simulate an Arduino in your browser without having to touch (ahem... blow up) any hardware. Yes, you can design circuit boards in 123D Circuits and they'll automagically arrive at your door in 10-12 days, but we're here now because we love Arduino boards and we have a few Instructables already written to get you going with an Arduino in 123D Circuits HERE and HERE.
Example circuit, press the PLAY button in the upper right hand corner to see it ping-pong with LEDs.
Do you already know all about Arduino? Then head on over to the Instructables Arduino contest There's still time to submit an entry. Wondering what other people are working on? People like you just voted for the winners of the 123D Circuits contest on Instructables.
If you'd like to 3D print a case look no further; the 123D Gallery is full of 3D models of various Arduino board enclosures and useful parts. These are great 3D Models to 3D Print as-is or modify with one of our apps like MeshMixer or Tinkercad. You can download them for free to use in your own projects!
Arduino compatible boards and other parts
Cases, Bumpers, Misc.
Note: Here is a complete list of Arduino-related models (100+ pcs.) found in 123D Gallery. Some models mentioned in this post are from the Premium 123D collection, however even Free 123D membership owners can download up to 10 premium models per month!
3D print these models
Follow below steps to print these Arduino-related models on your 3D printer: