At its peak, it was a fresh, cloud-native alternative to clunky desktop software. Today, the standalone 123D Circuits has been sunset. Its core technologies live on within and, more recently, Fusion 360 Electronics .
Power up your circuit and see LEDs blink or motors spin in real-time. 123d circuits
Its primary distinction was its . Unlike traditional EDA tools that jump straight to abstract schematics, 123D Circuits allowed users to place virtual components—complete with realistic 3D models—onto a breadboard, wire them with virtual jumper wires, and simulate the circuit in real-time. At its peak, it was a fresh, cloud-native
Convert breadboard prototypes into professional printed circuit board (PCB) layouts. Key Features and Why They Matter 1. Risk-Free Experimentation Power up your circuit and see LEDs blink
Being cloud-based meant you didn't need to install heavy software. Teachers could share a link to a circuit, and students could "remix" it—creating a copy to tinker with and explore. Transition to Tinkercad Circuits
★★☆☆☆ (2/5 – only for historical reference or if you have legacy projects)