Autodesk, traditionally a giant in professional CAD (AutoCAD, Revit, Inventor), wanted to capture this growing maker and educational market. They launched the —a collection of free, simplified tools for 3D modeling (123D Design), sculpting (123D Sculpt), and circuits.
Its spirit lives on in Tinkercad Circuits (which still simulates Arduinos and breadboards for free) and in Wokwi (a modern, fast Arduino/ESP32 simulator). But for those who used it, 123D Circuits remains a fond memory—the tool that made "I built a digital clock in my browser" possible long before it was common. autodesk 123d circuits
Autodesk 123D Circuits was an innovative, browser-based electronic design automation (EDA) tool that emerged in the early 2010s, aimed at makers, students, and hobbyists. Its story is one of visionary accessibility, rapid evolution, and eventual strategic shift within a large software company. Before 123D Circuits, designing and prototyping electronics was fragmented. You'd sketch a schematic on paper, design a PCB in expensive, complex software like Eagle or Altium, then order physical boards—a slow, costly process for beginners. Meanwhile, Arduino and the maker movement were exploding. But for those who used it, 123D Circuits
You cannot access old projects through the original interface. Autodesk recommends using Tinkercad Circuits for learning and Fusion 360 with Eagle for professional PCB design. The story of 123D Circuits is a classic tech tale: visionary, beloved, but ultimately reshaped by corporate strategy—a stepping stone in the evolution of accessible electronics design. Before 123D Circuits