মূল বিষয়বস্তুতে যান
Example:
Circuit Lab
Live Hardware VisualizationSTOPPED
ESP32-WROOM-32: The metal can holds the ESP32 chip, 4 MB flash and the 40 MHz crystal. The top part is the PCB antenna — keep it clear of metal.ESP32-WROOM-32Antenna: Printed Wi-Fi/Bluetooth antenna.Micro-USB: Upload sketches, open the Serial Monitor and power the board (5 V).USB-UART: CP2102 or CH340 chip that turns USB into the ESP32's serial port.EN: Reset button (pulls EN low).BOOT: Holds GPIO0 low; press it while uploading if the upload tool can't enter boot mode.LED (GPIO2): Built-in blue LED on GPIO2 on most DevKit V1 boards.3.3 V regulator: AMS1117 regulator: 5 V → 3.3 V.

GPIO Pin Monitor

No active GPIO pins configured yet. Call pinMode() in setup().

Serial Monitor
No serial output yet. Use Serial.print() in your code.