Interface 20

PHOTO EMBED

Sun Jan 07 2024 18:34:57 GMT+0000 (Coordinated Universal Time)

Saved by @马丽 

void setup() {
  Serial.begin(9600);
  
  pinMode(TRIGGER_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  
  pinMode(GREEN_LED_PIN, OUTPUT);
  pinMode(RED_LED_PIN, OUTPUT);
  pinMode(BLUE_LED_PIN, OUTPUT);
}
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