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ESP32 Open Kit Simulator ↗ All recipes
Tip: Ctrl+↵ to run
Simulate traces what the sketch would do — Serial.print output streams here, pin events show as [pin N] HIGH/LOW, delays play back at 25× speed. For real hardware output, click Download .ino, open in the Arduino IDE, and upload to your ESP32. The simulator covers Serial / digitalWrite / analogRead / pinMode / delay / tone / common loops — library calls (DHT, OLED, etc.) are stubbed so the sketch runs without errors.

About this recipe

include <WiFi.h>

Libraries / imports

WiFi.h PubSubClient.h

Hardware / pins

WIFI MQTT

Key API calls

Serial.print() Serial.println() Serial.begin() delay()

How to run

Press Simulate — Serial output streams here. Or Download to flash to your board.
Editor cpp edits auto-save
Output ready
Output will appear here after you click Run.

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