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Simulator: your feedback, bugs and wishes

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ESP32 Projects team Team

The on-site simulator runs your sketch right in the browser: ESP32, ESP32-C3/S3, Arduino Uno/Nano/Mega, over a hundred components, current and voltage checks, a schematic view and KiCad export.

It is young, so your feedback matters a lot. Post here:

  • A bug: what you did, what you expected, what happened. Ideally with a Share link containing the circuit and code.
  • A missing component: the module name and the library you use with it.
  • A library that does not compile: the first lines of the error from the simulator console.
  • An idea: what would make the simulator more useful to you.

Known limitations

  • A subset of C++ is simulated: templates and parts of the STL are not supported yet.
  • Wi-Fi and MQTT are emulated — the simulator makes no real network requests.

For bigger separate subjects (say, a specific library) start a new topic in the Simulator section.

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