Autodesk Tinkercad is not available for Linux but there are a few alternatives that runs on Linux with similar functionality. The best Linux Circuit Simulator alternative is Ktechlab, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Autodesk Tinkercad and three of them are Circuit Simulators available for Linux so hopefully you can find a suitable replacement. Other interesting Linux Circuit Simulator alternatives to Autodesk Tinkercad are SimulIDE and Wokwi Arduino Simulator.
KTechLab is an IDE for microcontrollers and electronics. It supports circuit simulation, program development for microcontrollers and simulating the programmed microcontroller together with its application circuit.
SimulIDE is a simple real time electronic circuit simulator. It's intended for general purpose electronics and microcontroller simulation, supporting PIC and AVR. PIC simulation is provided by gpsim and avr simulation by simavr.
A web-app you can use to simulate circuits as well as run Arduino sketches right in the browser, using the open-source AVR8js platform.
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