Arduino用UNO板为底座的寻迹小车代码

你好，以下是一个使用Arduino UNO板的寻迹小车的代码示例：

//定义左右电机引脚
int motorLeftForward = 5;
int motorLeftBackward = 6;
int motorRightForward = 10;
int motorRightBackward = 9;

//定义寻迹模块引脚
int leftSensor = A0;
int middleSensor = A1;
int rightSensor = A2;

void setup() {
  //初始化电机引脚为输出模式
  pinMode(motorLeftForward, OUTPUT);
  pinMode(motorLeftBackward, OUTPUT);
  pinMode(motorRightForward, OUTPUT);
  pinMode(motorRightBackward, OUTPUT);

  //初始化寻迹模块引脚为输入模式
  pinMode(leftSensor, INPUT);
  pinMode(middleSensor, INPUT);
  pinMode(rightSensor, INPUT);
}

void loop() {
  //读取寻迹模块的数据
  int leftValue = digitalRead(leftSensor);
  int middleValue = digitalRead(middleSensor);
  int rightValue = digitalRead(rightSensor);

  //当三个传感器都在黑线上时，小车直行
  if (leftValue == LOW && middleValue == LOW && rightValue == LOW) {
    digitalWrite(motorLeftForward, HIGH);
    digitalWrite(motorLeftBackward, LOW);
    digitalWrite(motorRightForward, HIGH);
    digitalWrite(motorRightBackward, LOW);
  }
  //当中间传感器在黑线上时，小车向前直行
  else if (middleValue == LOW) {
    digitalWrite(motorLeftForward, HIGH);
    digitalWrite(motorLeftBackward, LOW);
    digitalWrite(motorRightForward, HIGH);
    digitalWrite(motorRightBackward, LOW);
  }
  //当左边传感器在黑线上时，小车向左转弯
  else if (leftValue == LOW) {
    digitalWrite(motorLeftForward, LOW);
    digitalWrite(motorLeftBackward, HIGH);
    digitalWrite(motorRightForward, HIGH);
    digitalWrite(motorRightBackward, LOW);
  }
  //当右边传感器在黑线上时，小车向右转弯
  else if (rightValue == LOW) {
    digitalWrite(motorLeftForward, HIGH);
    digitalWrite(motorLeftBackward, LOW);
    digitalWrite(motorRightForward, LOW);
    digitalWrite(motorRightBackward, HIGH);
  }
}

这是一个简单的代码示例，实现了当寻迹模块检测到黑线时，小车会向对应的方向转弯。你可以根据自己的需要修改代码以实现更复杂的功能。