AutoDesk 123D Circuits

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123D Circuits is an electronics simulation program for designing circuits. It is an online program that allows you lay out components on a breadboard and simulate how the circuit will behave, it can also create schematics and model the circuit on a printed circuit board (PCB), and can even order manufactured PCBs direct from the company.


123D Circuits is free software provided through the AutoDesk 123D collection, anyone can use it for free. Sign-up is required.

Install Link:

Getting Started

There are a number of tutorials and videos provided at as well as other online resources.

Other Resources