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ESP32开发板 / ESP32 dev board 3mm或5mm红外发射管 / 3mm or 5mm infrared emission tube 三极管（用于放大电流） / Transistor (for current amplification) DHT11温湿度传感器 / DHT11 temperature and humidity sensor Arduino IDE ...
-ESP32 (3.3V & GND): Powers the OLED display. -GPIO 21 & GPIO 22: Used for I2C communication with the SH1106 display. -GPIO 19, 18, 23, 5: Control the four LEDs.
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